gstack/test/fixtures/ceo-native-ledger-8525.json

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  "source": "8525fd4abad1e54de1aaaa9a5692202d4b13bd25",
  "provenance": "All native calls and ACKs are exact public captures. The first three groups reconstruct successful original Write/Edit inputs before each question. Paired-second explicitly uses synthetic ledger excerpts because its original saved artifact and mutation timestamps were not retained. No hidden reasoning.",
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        "error": "ENOENT: no such file or directory, open '/tmp/gstack-owned-display-2pr8geye/gstack-paid-shard-PMo1RX/tmp/gstack-e2e-plan-ceo-sNPNl0/gstack-test-plan-ceo.md'",
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      "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-2pr8geye/gstack-paid-shard-PMo1RX/tmp/gstack-e2e-plan-ceo-sNPNl0/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module \u2014 we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
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                    "description": "\u2705 Future requests auto-route to the matching gstack skill without you naming it\n\u2705 One short appended section; committed as a chore commit after plan mode exits\n\u274c Adds a gstack-specific block to a fixture repo's CLAUDE.md that you may not want"
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              "D0 \u2014 Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on `main`, about to run the HOLD SCOPE CEO review of PLAN.md.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs \u2192 /investigate, strategy \u2192 /plan-ceo-review, etc.). This is a one-time onboarding prompt. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit happen after this review exits plan mode, not now.\nStakes if we pick wrong: Without routing rules you invoke skills manually every time; with them, requests auto-route. Either way the review itself is unaffected.\nRecommendation: A because routing rules make later sessions pick the right skill without you remembering names.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: convenience for future sessions vs. keeping CLAUDE.md untouched.": "Add routing rules (recommended)"
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              "D0.1 \u2014 Let gstack search learnings from your other projects on this machine?\nProject/branch/task: plan-count fixture on `main`; first-run config prompt before the HOLD SCOPE review.\nELI10: gstack keeps a local log of lessons learned per project. It can also read lessons from your other projects on this machine to spot repeat patterns. Everything stays local; nothing leaves the machine. Skip if you work on multiple client codebases where cross-contamination is a concern.\nStakes if we pick wrong: Enabling on a multi-client machine could surface one client's quirks in another's review; disabling on a solo machine just means fewer prior-learning hits.\nRecommendation: Enable because a solo dev benefits from cross-project patterns and this is a sandbox with no other projects to leak from.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: broader prior-learning recall vs. strict per-project isolation.": "Enable cross-project (recommended)"
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        "error": "Unsupported current CEO decision; cannot exclude it from the 4\u20137 count: b7c260d1-c228-467f-9eb3-4a0cb3f9cecb:toolu_01Ci7QXmMKVrPDhxrtrDRUHr",
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      "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-2pr8geye/gstack-paid-shard-PMo1RX/tmp/gstack-e2e-plan-ceo-j49Slw/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module \u2014 we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
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                "question": "D0 \u2014 Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: main branch, plan-review fixture; running /plan-ceo-review in HOLD SCOPE mode.\nELI10: gstack works best when your project's CLAUDE.md includes skill routing rules, so that requests like \"review this bug\" automatically route to the right skill. This is a one-time onboarding prompt per project. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit are deferred until after this review exits plan mode.\nStakes if we pick wrong: Without routing rules you invoke skills manually; with them, routine requests get routed automatically. Low stakes, fully reversible.\nRecommendation: A because routing rules make later sessions faster with no downside beyond a small CLAUDE.md section.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: Convenience for future sessions vs. keeping CLAUDE.md untouched.",
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                    "label": "Add routing rules to CLAUDE.md (recommended)",
                    "description": "\u2705 Future requests auto-route to the matching gstack skill without you naming it\n\u2705 One-time setup; a short appended section, committed as a chore commit after plan mode\n\u274c Adds a routing section to CLAUDE.md that teammates will see in the repo"
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                    "description": "\u2705 CLAUDE.md stays exactly as it is; nothing is committed to the fixture repo\n\u2705 You keep full control over which skill runs and when\n\u274c You must remember and type skill names yourself in every future session"
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              "D0 \u2014 Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: main branch, plan-review fixture; running /plan-ceo-review in HOLD SCOPE mode.\nELI10: gstack works best when your project's CLAUDE.md includes skill routing rules, so that requests like \"review this bug\" automatically route to the right skill. This is a one-time onboarding prompt per project. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit are deferred until after this review exits plan mode.\nStakes if we pick wrong: Without routing rules you invoke skills manually; with them, routine requests get routed automatically. Low stakes, fully reversible.\nRecommendation: A because routing rules make later sessions faster with no downside beyond a small CLAUDE.md section.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: Convenience for future sessions vs. keeping CLAUDE.md untouched.": "Add routing rules to CLAUDE.md (recommended)"
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                "question": "D1 \u2014 Ledger R1: Should the new Webhooks::StripePaymentWebhookHandler bypass WebhookDispatcher or register with it?\nProject/branch/task: main branch, HOLD SCOPE CEO review of the Payment Processing Integration plan; PLAN.md:100-108 leaves this open.\nELI10: Today one dispatcher receives every Stripe webhook and routes only \"payment succeeded\" events into the handler, behind signature checks, duplicate-event protection, and a per-user lock. The plan proposes a brand-new class that skips the dispatcher for \"clean namespace separation\", but the settled class name already gives you that separation. Skipping the dispatcher means you must re-prove that every one of those guards still wraps the new code, and you end up with two ways events get routed.\nStakes if we pick wrong: A missed guard on a second dispatch path means unsigned or duplicate events could reach payment code, or the new handler quietly receives event types it was never written for. Two routing paths also drift apart over the next 6 months.\nRecommendation: A because it keeps one dispatch path, inherits every existing guard and the feature-flag rollout with zero re-proof, and is the smallest clear diff (engineering preference: right-sized diff + DRY).\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: One dispatch path with inherited safety vs. total separation that costs a second path and a full guard re-verification.",
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                    "label": "A) Register with WebhookDispatcher (recommended)",
                    "description": "\u2705 Inherits signature, dedup, per-user lock, ownership guard, type filter, tracing identity, and flag rollout without re-proving any of them\n\u2705 One dispatch path; smallest diff; matches where the codebase should be in 12 months\n\u274c Handler stays coupled to the dispatcher's registration interface (which the plan already keeps available)\nEffort: human ~half day / CC ~10 min. Risk: low. Maintenance: one path to maintain."
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                    "description": "\u2705 Total separation from the dispatcher module; no dependency on its interface\n\u2705 Freedom to shape the handler entry point however you like\n\u274c Plan gives no mechanism for how a standalone class receives only succeeded events inside the guards; every contract at PLAN.md:12-39 becomes unknown for the new path; second dispatch path is a DRY violation\nEffort: human ~2 days / CC ~30 min. Risk: high. Maintenance: two routing paths."
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                    "description": "\u2705 Separation with the unknowns closed by explicit per-guard verification and documentation\n\u2705 Leaves a written proof that each guard wraps the standalone entry\n\u274c Most work for the same user outcome as A, and still leaves two dispatch paths to keep in sync\nEffort: human ~3 days / CC ~45 min. Risk: medium. Maintenance: two paths plus a guard-coverage doc to keep current."
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              "D1 \u2014 Ledger R1: Should the new Webhooks::StripePaymentWebhookHandler bypass WebhookDispatcher or register with it?\nProject/branch/task: main branch, HOLD SCOPE CEO review of the Payment Processing Integration plan; PLAN.md:100-108 leaves this open.\nELI10: Today one dispatcher receives every Stripe webhook and routes only \"payment succeeded\" events into the handler, behind signature checks, duplicate-event protection, and a per-user lock. The plan proposes a brand-new class that skips the dispatcher for \"clean namespace separation\", but the settled class name already gives you that separation. Skipping the dispatcher means you must re-prove that every one of those guards still wraps the new code, and you end up with two ways events get routed.\nStakes if we pick wrong: A missed guard on a second dispatch path means unsigned or duplicate events could reach payment code, or the new handler quietly receives event types it was never written for. Two routing paths also drift apart over the next 6 months.\nRecommendation: A because it keeps one dispatch path, inherits every existing guard and the feature-flag rollout with zero re-proof, and is the smallest clear diff (engineering preference: right-sized diff + DRY).\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: One dispatch path with inherited safety vs. total separation that costs a second path and a full guard re-verification.": "A) Register with WebhookDispatcher (recommended)"
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          "savedPlan": "# Plan: Payment Processing Integration \u2014 CEO Review (HOLD SCOPE)\n\nWorking plan for `/plan-ceo-review`. Reviewed plan: `PLAN.md` at repo root\n(commit 9b9ce55, branch `main`, base branch `main`). Mode: HOLD SCOPE (user-selected).\nReview only; no code is changed by this document.\n\n## Context\n\nThe approved motivation (PLAN.md:8-11) is to move payment orchestration out of\nthe prior library-adapter handler into application-owned code while retaining\nthe existing payment and receipt behavior exactly. This is a refactor with a\nretained-behavior contract: any behavior regression is pure loss, because the\nuser gains nothing visible from the move itself.\n\nThe repository under review contains only `PLAN.md` and `CLAUDE.md`. Every\n\"existing contract\" below is taken from PLAN.md:7-103 and is stated, not\ninspected. Where a contract's truth changes a finding, it is marked UNKNOWN\nwith an owner and required verification.\n\n## Post-plan-mode follow-up (not part of the reviewed plan)\n\n- D0 answer: add gstack skill routing rules to `CLAUDE.md` and commit\n  (`chore: add gstack skill routing rules to CLAUDE.md`). Deferred because plan\n  mode forbids editing files other than this plan. Do after ExitPlanMode.\n- D0b answer: cross-project learnings enabled (`gstack-config set\n  cross_project_learnings true`, done; writes to ~/.gstack are plan-mode safe).\n\n## Step 0 \u2014 Nuclear Scope Challenge\n\n### 0A. Premise Challenge\n\n1. **Right problem?** Ownership of payment orchestration is a legitimate goal.\n   But the Architecture section (PLAN.md:105-108) justifies bypassing\n   `WebhookDispatcher` with \"clean namespace separation\". Namespace separation\n   is already delivered by the settled name `Webhooks::StripePaymentWebhookHandler`\n   (PLAN.md:100-103). Bypassing the dispatcher buys nothing the name does not\n   already buy, and it is a proxy for the real goal (app-owned code).\n2. **Outcome?** User outcome is unchanged by design: payment marked paid, one\n   receipt per PaymentIntent. The plan reaches ownership directly; the bypass,\n   raw SQL, unhandled mail leg, and zero tests are all incidental choices that\n   put the retained-behavior contract at risk.\n3. **Do nothing?** The prior handler keeps working. The pain is architectural\n   (library-adapter ownership), real but not urgent. That sets the bar: the\n   new handler must be at least as safe as the old one on day one.\n\n**Terminology flag.** PLAN.md:111 says \"the new endpoint\". All other contracts\ndescribe a *handler* invoked by the existing ingress behind one shared webhook\nURL (PLAN.md:17-18, 38-39). If a new HTTP endpoint were actually intended, the\nsignature, dedup, lock, and ownership guards would not wrap it. This review\ntreats it as a handler, per the contracts, and records the wording as a\ncorrection to make in PLAN.md (Section 5 owner).\n\n### 0B. Existing Code Leverage\n\n| Sub-problem | Existing code (per PLAN.md) | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware (:12-13) | Yes, unchanged |\n| Event-type routing (`payment_intent.succeeded` only) | ingress / `WebhookDispatcher` (:14-15, 107) | **Partially \u2014 bypass proposed** |\n| user_id extraction, nil/empty ack | payload adapter (:16-20) | Yes |\n| Ownership guard (PaymentIntent \u2194 user binding) | ingress guard (:27-31) | Yes |\n| Event dedup + per-user lock | event guard (:32-39) | Yes |\n| User lookup | existing lookup (:24-26) | **No \u2014 raw SQL fragment proposed (:111-112)** |\n| Unknown/deleted user ack | lookup-result guard (:43-44) | Yes |\n| Idempotent user update | existing update (:40-42) | Yes |\n| Missing email address skip | recipient-policy helper (:45-51) | Yes |\n| Receipt send w/ idempotency key, retry record, 1s deadline | shared mail client (:85-97) | Yes, but its rethrown exceptions are not handled (:116) |\n| Orders for receipt summary | data loading loop (:81-84, 122-123) | **Rebuilt as per-order loop (N+1)** |\n| Tracing, dashboards, alerts, runbooks | shared clients + ingress wrapper (:58-69) | Yes |\n| Feature flag + rollback + staging replay checklist | existing rollout path (:74-80) | Yes |\n\nRebuild without justification: dispatch routing (bypass), user lookup (raw SQL),\norder loading (loop). Each is cheaper and safer to reuse or batch.\n\n### 0C. Dream State Mapping\n\n```\n  CURRENT STATE                    THIS PLAN (as written)              12-MONTH IDEAL\n  ---------------------------      ------------------------------      ---------------------------\n  Payment orchestration lives      + App-owned handler class           All Stripe handlers app-owned,\n  in a library-adapter handler.    - Bypasses WebhookDispatcher        registered in ONE dispatcher.\n  Shared ingress guards, mail        (second dispatch path)            Every handler: parameterized\n  client, runbooks, flag, and      - Raw SQL with external string      data access, explicit rescue\n  dispatcher already exist.        - Mail exceptions unhandled         map, automated regression\n                                   - No automated handler tests        tests, batched loads. Payment\n                                   - Per-order N+1 load                ack never depends on the mail\n                                                                       provider being up.\n```\n\nThe plan moves toward ownership (good) and away from consistency, safety, and\ntestability (bad). The delta below fixes direction without adding scope.\n\n### 0D. Alternatives \u2014 Decision Ledger\n\nStable IDs persist through the review sections and the report.\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 \u2014 Architecture (Step 0D / Section 1) | PLAN.md:10-11, 14-15, 100-108: dispatcher \"remains available\"; bypass \"still an architectural choice to review\"; whether to reuse `WebhookDispatcher` \"remains open\". Name `Webhooks::StripePaymentWebhookHandler` is settled. No source available to confirm what the dispatcher does beyond routing by event type. | Prior library-adapter handler, dispatched through `WebhookDispatcher`. | Bypass the dispatcher with a standalone class (plan) vs register the new app-owned class with the existing dispatcher. Options compared below. | unresolved | \u2014 |\n\n#### R1 option comparison\n\nCommitment grid (offered options only):\n\n```\nCommitment                                   | Source/approval or pending | Current            | A: Register w/ dispatcher | B: Bypass dispatcher (plan) | C: Bypass + re-verify guards\n---------------------------------------------|----------------------------|--------------------|---------------------------|-----------------------------|-----------------------------\nHandler class name Webhooks::StripePayment\u2026  | approved (PLAN.md:100-103) | n/a (prior handler)| same                      | same                        | same\nRuns inside sig/dedup/lock/ownership guards  | required (PLAN.md:38-39)   | yes                | yes (inherited)           | UNKNOWN \u2014 must be proven    | yes, re-verified per guard\nEvent-type filter (succeeded only)           | required (PLAN.md:14-15)   | dispatcher/ingress | inherited                 | UNKNOWN \u2014 who filters?      | re-implemented or proven\nNumber of dispatch paths                     | pending (this row)         | 1                  | 1                         | 2                           | 2\nHandler identity in outcome traces           | required (PLAN.md:98-99)   | yes                | inherited                 | UNKNOWN                     | re-verified\nFeature-flag rollout path                    | required (PLAN.md:74-75)   | yes                | inherited                 | UNKNOWN                     | re-verified\n```\n\n**A) Register the app-owned handler with the existing `WebhookDispatcher`** \u2014\nEffort S, risk low. Pros: one dispatch path; inherits guards, type filter,\ntracing identity, and flag rollout with no re-proof; smallest diff; matches\nthe 12-month ideal. Cons: keeps a dependency on the dispatcher module (which\nthe plan already says remains available); if the dispatcher is library-shaped,\nownership is \"handler-owned, dispatch-shared\" rather than total.\nReuse: everything in 0B. Verification: existing staging replay + handler tests.\n\n**B) Bypass the dispatcher with a standalone class (plan as written)** \u2014\nEffort M, risk high. Pros: total separation from the dispatcher; no coupling\nto its interface. Cons: second dispatch path (DRY violation, 6-month drift\nrisk); the plan gives no mechanism for how the standalone class receives only\n`payment_intent.succeeded` inside the guards, so every contract at PLAN.md:12-39\nbecomes UNKNOWN for the new path; the stated justification (\"clean namespace\")\nis already satisfied by the name. Reuse: guards only if re-wired.\nVerification: would require proving each guard wraps the new path.\n\n**C) Bypass, plus explicitly re-verify and document every guard on the new path** \u2014\nEffort L, risk medium. Pros: separation with the unknowns closed. Cons: most\nwork for the same user outcome as A; still two dispatch paths; the re-proof\nwork is exactly what A gets for free.\n\nWeighing diff size and long-term architecture equally, A wins on both.\n",
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      "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-2pr8geye/gstack-paid-shard-PMo1RX/tmp/gstack-e2e-plan-ceo-paired-qSYrrO/gstack-test-plan-ceo-paired.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing \u2014 Test Coverage\n\n## Existing coverage and test infrastructure retained\nThis changes unit tests only; processPayment() production behavior stays as-is.\nThe Stripe adapter suite already covers network timeouts, card declines (402),\nrate limits (429), and recovery when an initial 502 is followed by a successful\ncharge. Receipt-builder failure behavior has its own passing regression tests.\nThe payment test factory explicitly configures max_retries=1 and exposes the\nStripe mock call history. Its injected virtual sleeper records backoff without\nreal delays, so an exhausted 502 operation makes exactly two charge attempts.\nThese existing helpers and regression suites remain in use for this change.\n\n## Existing behavior retained\nA successful charge returns a receipt with chargeId copied from Stripe,\namountCents equal to the requested integer amount, and currency equal to\nthe requested currency. For a 1000-cent USD charge returning id ch_paid,\nthe receipt is { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }.\nOn repeated 502 responses, max_retries=1 means two total charge attempts\nseparated by one recorded 100 ms backoff, followed by PaymentUnavailable.\nThese contracts are already implemented; this plan adds their unit coverage.\n\n## Proposed tests\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id ch_paid, call\n   processPayment with amountCents=1000 and currency=USD, and assert only\n   that the returned receipt is truthy. This is the complete planned assertion.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment, and assert only that it rejects with PaymentUnavailable.\n   No assertion about the mock call history or virtual sleeper record\n   is planned for this test.",
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                "question": "D1 \u2014 Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on main, reviewing PLAN.md (payment test coverage) in HOLD SCOPE.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs \u2192 /investigate, scope \u2192 /plan-ceo-review, etc.). Without it you invoke each skill by hand. This is a one-time setup prompt per project.\nStakes if we pick wrong: Pick A and you get a ~15-line section appended to CLAUDE.md plus a commit (deferred until plan mode exits). Pick B and nothing changes; you can re-enable later via gstack-config.\nRecommendation: A because routing rules make the skill set discoverable at near-zero cost, and it is fully reversible.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: a small CLAUDE.md addition vs. manual skill invocation. Two-way door either way.",
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                    "description": "\u2705 Claude auto-routes requests to the right gstack skill without you remembering names\n\u2705 Fully reversible: delete the section or set routing_declined\n\u274c Appends ~15 lines to CLAUDE.md and creates a commit (deferred: plan mode is active now)"
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                    "label": "No thanks, invoke manually",
                    "description": "\u2705 CLAUDE.md stays exactly as it is; no extra commit on this fixture repo\n\u2705 Re-enable any time with gstack-config set routing_declined false\n\u274c Skills are only used when you type the slash command yourself"
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              "D1 \u2014 Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on main, reviewing PLAN.md (payment test coverage) in HOLD SCOPE.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs \u2192 /investigate, scope \u2192 /plan-ceo-review, etc.). Without it you invoke each skill by hand. This is a one-time setup prompt per project.\nStakes if we pick wrong: Pick A and you get a ~15-line section appended to CLAUDE.md plus a commit (deferred until plan mode exits). Pick B and nothing changes; you can re-enable later via gstack-config.\nRecommendation: A because routing rules make the skill set discoverable at near-zero cost, and it is fully reversible.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: a small CLAUDE.md addition vs. manual skill invocation. Two-way door either way.": "Add routing rules (recommended)"
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                "question": "D2 (ledger R1) \u2014 What should Test 1 (successful charge) assert about the receipt?\nProject/branch/task: main, PLAN.md payment test coverage, HOLD SCOPE.\nELI10: The plan spells out exactly what a good receipt looks like: { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }. But the test as written only checks that SOMETHING came back. A receipt with the wrong amount, wrong currency, or no chargeId at all would still pass. That is a test that runs the code but cannot catch the bugs it is named for.\nStakes if we pick wrong: with truthy-only, a receipt-mapping regression (say amountCents copied from the wrong field) ships green and customers see wrong billing amounts on receipts. Full equality is one extra line using the same factory and mock.\nRecommendation: B (full equality) because the plan already states the exact expected object, and a strict match also catches accidental extra fields such as a leaked raw Stripe payload.\nCompleteness: A=2/10, B=10/10, C=8/10\nNet: same test count, same file, same helpers; the only variable is whether the test can fail when the receipt is wrong.",
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                    "description": "toEqual({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" })\n\u2705 Pins every field the plan names; fails on any chargeId, amount, or currency drift\n\u2705 Also catches unexpected extra fields leaking into the customer-facing receipt\n\u274c If the receipt legitimately gains a field later, this test must be updated deliberately"
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                    "label": "C: Three fields, tolerate extras",
                    "description": "toMatchObject with the same three fields\n\u2705 Pins chargeId, amountCents, and currency exactly as the plan states them\n\u2705 Survives additive receipt changes without a test edit\n\u274c Will not notice an accidental extra field (e.g. raw Stripe object attached to the receipt)"
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                    "description": "expect(receipt).toBeTruthy()\n\u2705 Matches the plan text verbatim; zero chance of a brittle assertion\n\u2705 Confirms the happy path returns without throwing\n\u274c Passes for {}, wrong chargeId, wrong amount, wrong currency; covers none of the stated receipt contract"
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              "D2 (ledger R1) \u2014 What should Test 1 (successful charge) assert about the receipt?\nProject/branch/task: main, PLAN.md payment test coverage, HOLD SCOPE.\nELI10: The plan spells out exactly what a good receipt looks like: { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }. But the test as written only checks that SOMETHING came back. A receipt with the wrong amount, wrong currency, or no chargeId at all would still pass. That is a test that runs the code but cannot catch the bugs it is named for.\nStakes if we pick wrong: with truthy-only, a receipt-mapping regression (say amountCents copied from the wrong field) ships green and customers see wrong billing amounts on receipts. Full equality is one extra line using the same factory and mock.\nRecommendation: B (full equality) because the plan already states the exact expected object, and a strict match also catches accidental extra fields such as a leaked raw Stripe payload.\nCompleteness: A=2/10, B=10/10, C=8/10\nNet: same test count, same file, same helpers; the only variable is whether the test can fail when the receipt is wrong.": "B: Full receipt equality (recommended)"
            },
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          "savedPlan": "# Plan: Payment Processing \u2014 Test Coverage (CEO review, HOLD SCOPE)\n\nReviewed by /plan-ceo-review on 2026-09-15. Branch: main. Base branch: main (no remote; git-native fallback).\nSource plan: PLAN.md in this repo. Mode: HOLD SCOPE (explicit user instruction).\n\n## Context\n\nprocessPayment() already implements two contracts: a receipt shape on success, and a\nbounded retry-then-PaymentUnavailable path on repeated Stripe 502s. The plan adds unit\ntests for both contracts in the existing processPayment suite. Production code, other\ntests, and the test factory (max_retries=1, Stripe mock call history, virtual sleeper)\nstay as-is.\n\n## Pre-review system audit\n\n- Checkout contains only CLAUDE.md and PLAN.md (1 commit `e1315f0 Seed review plan`).\n  No processPayment source, suite, factory, mock, or sleeper is present. All\n  infrastructure claims below are plan-asserted, NOT verified in this checkout.\n- No TODOS.md, no TODO/FIXME markers, no stashes, no in-flight branches, no design doc,\n  no handoff note, no prior review cycles.\n- No UI scope (backend unit tests only).\n\n## Step 0 observations (evidence; not approvals)\n\n### 0A Premise\n- Right problem: yes. Both contracts are user-money-relevant. A wrong receipt amount\n  or currency is a customer-visible billing error; an unbounded or zero-retry regression\n  is either a double-charge risk or a needless payment failure.\n- Outcome: the plan says \"this plan adds their unit coverage.\" As written, neither\n  proposed test covers the contract it names. Test 1 (`receipt is truthy`) passes for\n  `{}`, `{ chargeId: \"wrong\" }`, or `{ amountCents: 100000 }`. Test 2 (rejects with\n  PaymentUnavailable) passes for zero retries, ten retries, or a 0 ms backoff. The plan\n  reaches a proxy (test count +2), not the stated outcome (contract coverage).\n- Do nothing: the contracts stay implemented but unguarded. Pain is real, since the\n  adapter suite covers 402/429/timeouts/502-then-success but (per the plan) nothing\n  covers the exhausted-502 path or the receipt field mapping at the processPayment level.\n\n### 0B Existing code leverage\n| Sub-problem | Existing code (plan-asserted) | Verified here |\n|---|---|---|\n| Deterministic backoff | Injected virtual sleeper records delays | No (not in checkout) |\n| Attempt counting | Factory exposes Stripe mock call history | No |\n| Retry bound | Factory sets max_retries=1 | No |\n| Receipt construction | Receipt builder + its own regression tests | No |\nNothing is rebuilt. The plan reuses every helper it needs. The gap is that it does\nnot USE the call history or sleeper record it already has.\n\n### 0C Dream state\n```\n  CURRENT STATE                  THIS PLAN                       12-MONTH IDEAL\n  Contracts implemented,   --->  +2 tests in processPayment  ---> Every money-path\n  adapter suite covers           suite; assertions decide         contract pinned by\n  402/429/timeouts/502->ok;      whether they actually pin        a test that fails\n  exhausted-502 and receipt      the contract or just run         on any field or\n  mapping unpinned at            the code                         attempt-count drift\n  processPayment level\n```\nWith shallow assertions the plan moves sideways (green tests that cannot fail on\nregression). With contract assertions it moves toward the ideal.\n\n### Landscape (three-layer)\n- Layer 1: pin exact backend call count and each recorded delay; never sleep on the\n  wall clock. Table-driven attempts vs retries.\n- Layer 2: current guides agree (OneUptime 2026-08 deterministic retries; QASkills\n  429/backoff guide).\n- Layer 3: the virtual sleeper and call history already exist, so the marginal cost of\n  asserting the full contract is a few lines. A truthy assertion is a proxy metric.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (user) | gstack routing rules in CLAUDE.md (onboarding prompt) | none | append routing section + commit | approved | User chose A in D1. Deferred: plan mode blocks the edit/commit until review exits. |\n| R1 (user) | Test 1 assertions. Contract (PLAN.md \"Existing behavior retained\"): receipt == { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }. Evidence: plan text; suite not in checkout. | Plan: assert only `receipt` truthy (\"complete planned assertion\") | Assert full receipt equality (chargeId, amountCents, currency) | unresolved | \u2014 |\n| R2 (user) | Test 2 assertions. Contract: repeated 502 with max_retries=1 -> exactly 2 Stripe charge attempts, exactly one recorded 100 ms backoff, then rejects PaymentUnavailable. Evidence: plan text; factory/sleeper not in checkout. | Plan: assert only rejection with PaymentUnavailable; explicitly no call-history or sleeper assertion | Also assert mock call history length == 2 and sleeper record == [100] | unresolved | \u2014 |\n\n### R1 options \u2014 Test 1 (successful charge) assertions\n\n| Option | Summary | Effort | Risk | Pros | Cons | Reuse / verification |\n|---|---|---|---|---|---|---|\n| A. Truthy only (plan as written) | `expect(receipt).toBeTruthy()` | S | high (silent) | Cannot flake; matches plan text | Passes for `{}`, wrong chargeId, wrong amount, wrong currency; covers none of the stated contract | Uses factory + mock; verifies nothing about the receipt |\n| B. Full receipt equality | `expect(receipt).toEqual({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" })` | S (+1 line) | low | Pins every field the plan names; fails on any mapping drift; matches the plan's own worked example | Breaks if the receipt gains an extra field later (then switch to `toMatchObject` deliberately) | Same factory/mock; verifies the full stated contract |\n| C. Field-by-field with `toMatchObject` | Same three fields, tolerant of extra keys | S (+1 line) | low | Pins all three fields; survives additive receipt changes | Does not catch an accidental extra field (e.g. leaked Stripe raw payload) | Same factory/mock; verifies the three named fields |\n\nCommitment grid:\n```\nCommitment                        | Source / status          | Current | A   | B   | C\nReceipt is returned               | plan (existing behavior) | yes     | yes | yes | yes\nchargeId == \"ch_paid\"             | plan (existing behavior) | yes     | no  | yes | yes\namountCents == 1000               | plan (existing behavior) | yes     | no  | yes | yes\ncurrency == \"USD\"                 | plan (existing behavior) | yes     | no  | yes | yes\nNo extra receipt fields           | not stated in plan       | unknown | no  | yes | no\nProduction code unchanged         | plan                     | yes     | yes | yes | yes\n```\nOnly this row is decided here. R2 stays pending regardless of the R1 answer.\n\nStated limits kept: 2 new tests, 1 file (the existing processPayment suite),\n0 production changes, 0 new helpers. Neither R1 nor R2 changes those counts.\n",
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                "question": "D3 (ledger R2) \u2014 What should Test 2 (repeated 502) assert beyond the PaymentUnavailable rejection?\nProject/branch/task: main, PLAN.md payment test coverage, HOLD SCOPE.\nELI10: The plan states the retry contract precisely: with max_retries=1, two 502s mean exactly two charge attempts, one recorded 100 ms backoff, then PaymentUnavailable. The test as written only checks the final error. If someone accidentally removes the retry, or makes it retry ten times, or drops the backoff to zero, the test still passes. The factory already hands you the Stripe call history and the sleeper's recorded delays, so checking them is two lines.\nStakes if we pick wrong: too many attempts against Stripe is a duplicate-charge risk on a flaky network; zero backoff hammers Stripe mid-outage; neither shows up in a rejection-only test. A regression there reaches customers as double charges or longer outages.\nRecommendation: B because every clause of the plan's own stated contract gets a failing test, using helpers the plan already says exist for this purpose.\nCompleteness: A=3/10, B=10/10, C=7/10\nNet: same test count, same file, same helpers; the only variable is how many clauses of the retry contract can actually fail.",
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                    "label": "B: Rejection + 2 attempts + [100] backoff (recommended)",
                    "description": "rejects PaymentUnavailable; stripeMock.calls length 2; sleeper.recorded equals [100]\n\u2705 Pins all three clauses of the stated contract; catches extra retries, missing retries, and backoff drift\n\u2705 Uses the call history and virtual sleeper the factory already exposes; no new helpers\n\u274c Tied to max_retries=1 and the 100 ms constant; changing either later means a deliberate test edit"
                  },
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                    "label": "C: Rejection + 2 attempts only",
                    "description": "rejects PaymentUnavailable; stripeMock.calls length 2\n\u2705 Catches the double-charge case (too many attempts) and the missing-retry case\n\u2705 One extra line, no dependency on the sleeper's record format\n\u274c A backoff regression to 0 ms or 10 s passes silently; the sleeper record goes unused"
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                    "label": "A: Rejection only (plan as written)",
                    "description": "rejects PaymentUnavailable, nothing else\n\u2705 Matches the plan text verbatim including its explicit no-call-history clause\n\u2705 Smallest possible assertion; cannot break on factory internals\n\u274c Passes with 0 retries, 10 retries, or 0 ms backoff; the retry contract has no failing test"
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              "D3 (ledger R2) \u2014 What should Test 2 (repeated 502) assert beyond the PaymentUnavailable rejection?\nProject/branch/task: main, PLAN.md payment test coverage, HOLD SCOPE.\nELI10: The plan states the retry contract precisely: with max_retries=1, two 502s mean exactly two charge attempts, one recorded 100 ms backoff, then PaymentUnavailable. The test as written only checks the final error. If someone accidentally removes the retry, or makes it retry ten times, or drops the backoff to zero, the test still passes. The factory already hands you the Stripe call history and the sleeper's recorded delays, so checking them is two lines.\nStakes if we pick wrong: too many attempts against Stripe is a duplicate-charge risk on a flaky network; zero backoff hammers Stripe mid-outage; neither shows up in a rejection-only test. A regression there reaches customers as double charges or longer outages.\nRecommendation: B because every clause of the plan's own stated contract gets a failing test, using helpers the plan already says exist for this purpose.\nCompleteness: A=3/10, B=10/10, C=7/10\nNet: same test count, same file, same helpers; the only variable is how many clauses of the retry contract can actually fail.": "B: Rejection + 2 attempts + [100] backoff (recommended)"
            },
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            "answeredAt": "2026-09-15T10:03:26.682Z"
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          "savedPlan": "# Plan: Payment Processing \u2014 Test Coverage (CEO review, HOLD SCOPE)\n\nReviewed by /plan-ceo-review on 2026-09-15. Branch: main. Base branch: main (no remote; git-native fallback).\nSource plan: PLAN.md in this repo. Mode: HOLD SCOPE (explicit user instruction).\n\n## Context\n\nprocessPayment() already implements two contracts: a receipt shape on success, and a\nbounded retry-then-PaymentUnavailable path on repeated Stripe 502s. The plan adds unit\ntests for both contracts in the existing processPayment suite. Production code, other\ntests, and the test factory (max_retries=1, Stripe mock call history, virtual sleeper)\nstay as-is.\n\n## Pre-review system audit\n\n- Checkout contains only CLAUDE.md and PLAN.md (1 commit `e1315f0 Seed review plan`).\n  No processPayment source, suite, factory, mock, or sleeper is present. All\n  infrastructure claims below are plan-asserted, NOT verified in this checkout.\n- No TODOS.md, no TODO/FIXME markers, no stashes, no in-flight branches, no design doc,\n  no handoff note, no prior review cycles.\n- No UI scope (backend unit tests only).\n\n## Step 0 observations (evidence; not approvals)\n\n### 0A Premise\n- Right problem: yes. Both contracts are user-money-relevant. A wrong receipt amount\n  or currency is a customer-visible billing error; an unbounded or zero-retry regression\n  is either a double-charge risk or a needless payment failure.\n- Outcome: the plan says \"this plan adds their unit coverage.\" As written, neither\n  proposed test covers the contract it names. Test 1 (`receipt is truthy`) passes for\n  `{}`, `{ chargeId: \"wrong\" }`, or `{ amountCents: 100000 }`. Test 2 (rejects with\n  PaymentUnavailable) passes for zero retries, ten retries, or a 0 ms backoff. The plan\n  reaches a proxy (test count +2), not the stated outcome (contract coverage).\n- Do nothing: the contracts stay implemented but unguarded. Pain is real, since the\n  adapter suite covers 402/429/timeouts/502-then-success but (per the plan) nothing\n  covers the exhausted-502 path or the receipt field mapping at the processPayment level.\n\n### 0B Existing code leverage\n| Sub-problem | Existing code (plan-asserted) | Verified here |\n|---|---|---|\n| Deterministic backoff | Injected virtual sleeper records delays | No (not in checkout) |\n| Attempt counting | Factory exposes Stripe mock call history | No |\n| Retry bound | Factory sets max_retries=1 | No |\n| Receipt construction | Receipt builder + its own regression tests | No |\nNothing is rebuilt. The plan reuses every helper it needs. The gap is that it does\nnot USE the call history or sleeper record it already has.\n\n### 0C Dream state\n```\n  CURRENT STATE                  THIS PLAN                       12-MONTH IDEAL\n  Contracts implemented,   --->  +2 tests in processPayment  ---> Every money-path\n  adapter suite covers           suite; assertions decide         contract pinned by\n  402/429/timeouts/502->ok;      whether they actually pin        a test that fails\n  exhausted-502 and receipt      the contract or just run         on any field or\n  mapping unpinned at            the code                         attempt-count drift\n  processPayment level\n```\nWith shallow assertions the plan moves sideways (green tests that cannot fail on\nregression). With contract assertions it moves toward the ideal.\n\n### Landscape (three-layer)\n- Layer 1: pin exact backend call count and each recorded delay; never sleep on the\n  wall clock. Table-driven attempts vs retries.\n- Layer 2: current guides agree (OneUptime 2026-08 deterministic retries; QASkills\n  429/backoff guide).\n- Layer 3: the virtual sleeper and call history already exist, so the marginal cost of\n  asserting the full contract is a few lines. A truthy assertion is a proxy metric.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (user) | gstack routing rules in CLAUDE.md (onboarding prompt) | none | append routing section + commit | approved | User chose A in D1. Deferred: plan mode blocks the edit/commit until review exits. |\n| R1 (user) | Test 1 assertions. Contract (PLAN.md \"Existing behavior retained\"): receipt == { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }. Evidence: plan text; suite not in checkout. | Plan: assert only `receipt` truthy (\"complete planned assertion\") | Assert full receipt equality (chargeId, amountCents, currency) | approved | D2 answer: option B. Scope: Test 1's assertion only. `toEqual({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" })`. No other test, helper, or production change. |\n| R2 (user) | Test 2 assertions. Contract: repeated 502 with max_retries=1 -> exactly 2 Stripe charge attempts, exactly one recorded 100 ms backoff, then rejects PaymentUnavailable. Evidence: plan text; factory/sleeper not in checkout. | Plan: assert only rejection with PaymentUnavailable; explicitly no call-history or sleeper assertion | Also assert mock call history length == 2 and sleeper record == [100] | unresolved | \u2014 |\n\n### R1 options \u2014 Test 1 (successful charge) assertions\n\n| Option | Summary | Effort | Risk | Pros | Cons | Reuse / verification |\n|---|---|---|---|---|---|---|\n| A. Truthy only (plan as written) | `expect(receipt).toBeTruthy()` | S | high (silent) | Cannot flake; matches plan text | Passes for `{}`, wrong chargeId, wrong amount, wrong currency; covers none of the stated contract | Uses factory + mock; verifies nothing about the receipt |\n| B. Full receipt equality | `expect(receipt).toEqual({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" })` | S (+1 line) | low | Pins every field the plan names; fails on any mapping drift; matches the plan's own worked example | Breaks if the receipt gains an extra field later (then switch to `toMatchObject` deliberately) | Same factory/mock; verifies the full stated contract |\n| C. Field-by-field with `toMatchObject` | Same three fields, tolerant of extra keys | S (+1 line) | low | Pins all three fields; survives additive receipt changes | Does not catch an accidental extra field (e.g. leaked Stripe raw payload) | Same factory/mock; verifies the three named fields |\n\nCommitment grid:\n```\nCommitment                        | Source / status          | Current | A   | B   | C\nReceipt is returned               | plan (existing behavior) | yes     | yes | yes | yes\nchargeId == \"ch_paid\"             | plan (existing behavior) | yes     | no  | yes | yes\namountCents == 1000               | plan (existing behavior) | yes     | no  | yes | yes\ncurrency == \"USD\"                 | plan (existing behavior) | yes     | no  | yes | yes\nNo extra receipt fields           | not stated in plan       | unknown | no  | yes | no\nProduction code unchanged         | plan                     | yes     | yes | yes | yes\n```\nOnly this row is decided here. R2 stays pending regardless of the R1 answer.\n**R1 resolved: B (D2).**\n\n### R2 options \u2014 Test 2 (repeated 502) assertions\n\n| Option | Summary | Effort | Risk | Pros | Cons | Reuse / verification |\n|---|---|---|---|---|---|---|\n| A. Rejection only (plan as written) | `await expect(processPayment(...)).rejects.toThrow(PaymentUnavailable)` | S | high (silent) | Simple; matches plan text | Passes if the code retries 0 times, 10 times, or sleeps 0 ms; the retry contract is unguarded; a double-charge regression (extra attempts) is invisible | Uses factory + mock; ignores the call history and sleeper the factory exposes |\n| B. Rejection + attempt count + backoff record | Also `expect(stripeMock.calls).toHaveLength(2)` and `expect(sleeper.recorded).toEqual([100])` | S (+2 lines) | low | Pins every clause of the stated contract: 2 attempts, one 100 ms backoff, PaymentUnavailable; uses helpers the factory already exposes for exactly this | Couples to the factory's max_retries=1 and backoff constant (both stated in the plan as fixed) | Same factory/mock/sleeper; verifies the full contract |\n| C. Rejection + attempt count only | Also assert 2 attempts; skip the sleeper record | S (+1 line) | medium | Catches retry-count regressions (the double-charge case) | A backoff regression to 0 ms (hammering Stripe during an outage) or 10 s (user waits) passes | Same factory/mock; leaves the sleeper record unused |\n\nCommitment grid:\n```\nCommitment                             | Source / status          | Current | A   | B   | C\nRejects with PaymentUnavailable        | plan (existing behavior) | yes     | yes | yes | yes\nExactly 2 charge attempts              | plan (existing behavior) | yes     | no  | yes | yes\nExactly one recorded 100 ms backoff    | plan (existing behavior) | yes     | no  | yes | no\nUses existing factory/mock/sleeper     | plan                     | yes     | yes | yes | yes\nProduction code unchanged              | plan                     | yes     | yes | yes | yes\n```\nOnly this row is decided here. R1 (approved B) is unaffected.\n\nStated limits kept: 2 new tests, 1 file (the existing processPayment suite),\n0 production changes, 0 new helpers. Neither R1 nor R2 changes those counts.\n",
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      "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-2pr8geye/gstack-paid-shard-PMo1RX/tmp/gstack-e2e-plan-ceo-paired-qSYrrO/gstack-test-plan-ceo-paired.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing \u2014 Test Coverage\n\n## Existing coverage and test infrastructure retained\nThis changes unit tests only; processPayment() production behavior stays as-is.\nThe Stripe adapter suite already covers network timeouts, card declines (402),\nrate limits (429), and recovery when an initial 502 is followed by a successful\ncharge. Receipt-builder failure behavior has its own passing regression tests.\nThe payment test factory explicitly configures max_retries=1 and exposes the\nStripe mock call history. Its injected virtual sleeper records backoff without\nreal delays, so an exhausted 502 operation makes exactly two charge attempts.\nThese existing helpers and regression suites remain in use for this change.\n\n## Existing behavior retained\nA successful charge returns a receipt with chargeId copied from Stripe,\namountCents equal to the requested integer amount, and currency equal to\nthe requested currency. For a 1000-cent USD charge returning id ch_paid,\nthe receipt is { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }.\nOn repeated 502 responses, max_retries=1 means two total charge attempts\nseparated by one recorded 100 ms backoff, followed by PaymentUnavailable.\nThese contracts are already implemented; this plan adds their unit coverage.\n\n## Proposed tests\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id ch_paid, call\n   processPayment with amountCents=1000 and currency=USD, and assert only\n   that the returned receipt is truthy. This is the complete planned assertion.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment, and assert only that it rejects with PaymentUnavailable.\n   No assertion about the mock call history or virtual sleeper record\n   is planned for this test.",
      "seedProvenance": "Same frozen paired source fixture as first attempt; not an original request-byte claim for this second attempt.",
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                  {
                    "label": "Add routing rules to CLAUDE.md (recommended)",
                    "description": "Append the gstack skill-routing section to CLAUDE.md and commit it, so future requests auto-route to /office-hours, /plan-ceo-review, /investigate, /ship, etc. Deferred until plan mode exits."
                  },
                  {
                    "label": "No thanks, I'll invoke skills manually",
                    "description": "Sets routing_declined=true (re-enable later via gstack-config set routing_declined false). Never asked again for this project."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "gstack works best when your project's CLAUDE.md includes skill routing rules. Add them? (One-time onboarding prompt from gstack skill-start. Note: plan mode is active, so if you pick A the CLAUDE.md append + commit is deferred until we leave plan mode.)": "Add routing rules to CLAUDE.md (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-15T10:08:14.141Z"
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            "questions": [
              {
                "question": "gstack can search learnings from your other projects on this machine to find patterns that might apply here. This stays local (no data leaves your machine). Recommended for solo developers. Skip if you work on multiple client codebases where cross-contamination would be a concern. Enable cross-project learnings?",
                "header": "Learnings",
                "multiSelect": false,
                "options": [
                  {
                    "label": "Enable cross-project learnings (recommended)",
                    "description": "Sets cross_project_learnings=true in ~/.gstack config; future reviews surface prior learnings from all your local projects."
                  },
                  {
                    "label": "Keep learnings project-scoped only",
                    "description": "Sets cross_project_learnings=false; only this project's learnings are searched."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "gstack can search learnings from your other projects on this machine to find patterns that might apply here. This stays local (no data leaves your machine). Recommended for solo developers. Skip if you work on multiple client codebases where cross-contamination would be a concern. Enable cross-project learnings?": "Enable cross-project learnings (recommended)"
            },
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            "answeredAt": "2026-09-15T10:09:00.359Z"
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            "questions": [
              {
                "question": "D1 \u2014 R1: How much should test 1 (successful charge) actually assert?\nProject/branch/task: gstack-plan-count-0k3O7z on main, HOLD SCOPE review of the processPayment test-coverage plan.\nELI10: The plan writes down exactly what a good receipt looks like ({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }) and then proposes a test that only checks the receipt \"exists\". An empty object passes that test. So does a receipt charging $10 instead of 1000 cents. The question is whether this test should check the contract the plan itself documents.\nStakes if we pick wrong: a receipt-mapping regression (wrong amount, wrong currency, missing chargeId) ships to production with a green test named after the exact behavior it failed to check; users see the wrong number on their statement.\nRecommendation: A because it is the same one-line test with the assertion the plan already spells out, and it is the only option that can fail for the bugs the test is named for.\nCompleteness: A=10/10, B=7/10, C=3/10",
                "header": "R1 Test 1",
                "multiSelect": false,
                "options": [
                  {
                    "label": "A) Full receipt equality (recommended)",
                    "description": "\u2705 Fails on any field regression: chargeId, amount unit, currency; one readable assertion.\n\u2705 Matches the contract the plan already documents at PLAN.md lines 18-21; no new scope.\n\u274c Deep equality must be loosened to toMatchObject if the receipt later gains fields."
                  },
                  {
                    "label": "B) chargeId only",
                    "description": "\u2705 Proves the Stripe id is threaded through to the caller, the most visible field.\n\u2705 Tolerates receipt shape growth without touching the test.\n\u274c Silent on amountCents and currency: a cents/dollars bug or hardcoded USD passes green."
                  },
                  {
                    "label": "C) Truthy only (as planned)",
                    "description": "\u2705 Cannot break on any receipt shape change, ever.\n\u2705 Zero thought required to write; matches the plan text verbatim.\n\u274c Passes for {} and every wrong receipt; the test cannot fail for the regressions it exists to catch."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D1 \u2014 R1: How much should test 1 (successful charge) actually assert?\nProject/branch/task: gstack-plan-count-0k3O7z on main, HOLD SCOPE review of the processPayment test-coverage plan.\nELI10: The plan writes down exactly what a good receipt looks like ({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }) and then proposes a test that only checks the receipt \"exists\". An empty object passes that test. So does a receipt charging $10 instead of 1000 cents. The question is whether this test should check the contract the plan itself documents.\nStakes if we pick wrong: a receipt-mapping regression (wrong amount, wrong currency, missing chargeId) ships to production with a green test named after the exact behavior it failed to check; users see the wrong number on their statement.\nRecommendation: A because it is the same one-line test with the assertion the plan already spells out, and it is the only option that can fail for the bugs the test is named for.\nCompleteness: A=10/10, B=7/10, C=3/10": "A) Full receipt equality (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-15T10:10:49.924Z"
          },
          "savedPlan": "# Synthetic ledger for public native replay\n\nSource plan: PLAN.md. This document is a free-test reconstruction, not the original saved artifact.\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 \u2014 user | Payment test review; source PLAN.md. | Assert receipt is truthy only | Assert the documented receipt fields | unresolved | pending actual answer |\n\n### R1 options\n\n| Option | Summary | Effort | Risk | Pros | Cons |\n|---|---|---|---|---|---|\n| A) Full receipt equality (recommended) | \u2705 Fails on any field regression: chargeId, amount unit, currency; one readable assertion. \u2705 Matches the contract the plan already documents at PLAN.md lines 18-21; no new scope. \u274c Deep equality must be loosened to toMatchObject if the receipt later gains fields. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n| B) chargeId only | \u2705 Proves the Stripe id is threaded through to the caller, the most visible field. \u2705 Tolerates receipt shape growth without touching the test. \u274c Silent on amountCents and currency: a cents/dollars bug or hardcoded USD passes green. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n| C) Truthy only (as planned) | \u2705 Cannot break on any receipt shape change, ever. \u2705 Zero thought required to write; matches the plan text verbatim. \u274c Passes for {} and every wrong receipt; the test cannot fail for the regressions it exists to catch. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n",
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            "sessionId": "0bf26542-738c-476f-99b4-1daed9115977",
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            "questions": [
              {
                "question": "D2 \u2014 R2: What should test 2 (repeated 502) assert about the retry contract?\nProject/branch/task: gstack-plan-count-0k3O7z on main, HOLD SCOPE review of the processPayment test-coverage plan.\nELI10: The plan says: with max_retries=1, two 502s in a row mean exactly two charge attempts, one 100 ms pause, then a PaymentUnavailable error. The test factory already records how many times Stripe was called and how long the code slept. The plan proposes checking only the error and ignoring both recordings. So a change that retries zero times, or fifty times, or sleeps for zero ms, still passes.\nStakes if we pick wrong: a retry-budget regression either hammers Stripe with no backoff (rate-limit bans, duplicate-charge risk) or stops retrying on transient 502s (lost sales), and the test named \"repeated 502\" stays green either way.\nRecommendation: A because the observation helpers already exist, the contract is already written in the plan, and adding two assertions to one test is seconds of work.\nCompleteness: A=10/10, B=7/10, C=3/10",
                "header": "R2 Test 2",
                "multiSelect": false,
                "options": [
                  {
                    "label": "A) Rejection + attempts + backoff (recommended)",
                    "description": "\u2705 Pins retry count AND backoff delay; fails if retries go to 0, exceed 1, or sleep changes.\n\u2705 Uses the factory's exposed call history and sleeper record, exactly what they exist for.\n\u274c The literal 100 must move if backoff becomes a shared config constant later."
                  },
                  {
                    "label": "B) Rejection + attempts",
                    "description": "\u2705 Catches the two likeliest regressions: zero retries or unbounded retries.\n\u2705 One fewer literal to maintain; timing left to the adapter suite.\n\u274c A backoff regression to 0 ms (hot-looping Stripe) or 10 s passes green despite the sleeper record being available."
                  },
                  {
                    "label": "C) Rejection only (as planned)",
                    "description": "\u2705 Simplest test body; matches the plan verbatim.\n\u2705 Immune to any future change in retry count or backoff policy.\n\u274c Passes with zero, two, or a hundred attempts and any backoff; the documented contract stays unverified."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D2 \u2014 R2: What should test 2 (repeated 502) assert about the retry contract?\nProject/branch/task: gstack-plan-count-0k3O7z on main, HOLD SCOPE review of the processPayment test-coverage plan.\nELI10: The plan says: with max_retries=1, two 502s in a row mean exactly two charge attempts, one 100 ms pause, then a PaymentUnavailable error. The test factory already records how many times Stripe was called and how long the code slept. The plan proposes checking only the error and ignoring both recordings. So a change that retries zero times, or fifty times, or sleeps for zero ms, still passes.\nStakes if we pick wrong: a retry-budget regression either hammers Stripe with no backoff (rate-limit bans, duplicate-charge risk) or stops retrying on transient 502s (lost sales), and the test named \"repeated 502\" stays green either way.\nRecommendation: A because the observation helpers already exist, the contract is already written in the plan, and adding two assertions to one test is seconds of work.\nCompleteness: A=10/10, B=7/10, C=3/10": "A) Rejection + attempts + backoff (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-15T10:11:37.163Z"
          },
          "savedPlan": "# Synthetic ledger for public native replay\n\nSource plan: PLAN.md. This document is a free-test reconstruction, not the original saved artifact.\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R2 \u2014 user | Payment test review; source PLAN.md. | Assert rejects with PaymentUnavailable only | Also assert attempt count and recorded backoff | unresolved | pending actual answer |\n\n### R2 options\n\n| Option | Summary | Effort | Risk | Pros | Cons |\n|---|---|---|---|---|---|\n| A) Rejection + attempts + backoff (recommended) | \u2705 Pins retry count AND backoff delay; fails if retries go to 0, exceed 1, or sleep changes. \u2705 Uses the factory's exposed call history and sleeper record, exactly what they exist for. \u274c The literal 100 must move if backoff becomes a shared config constant later. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n| B) Rejection + attempts | \u2705 Catches the two likeliest regressions: zero retries or unbounded retries. \u2705 One fewer literal to maintain; timing left to the adapter suite. \u274c A backoff regression to 0 ms (hot-looping Stripe) or 10 s passes green despite the sleeper record being available. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n| C) Rejection only (as planned) | \u2705 Simplest test body; matches the plan verbatim. \u2705 Immune to any future change in retry count or backoff policy. \u274c Passes with zero, two, or a hundred attempts and any backoff; the documented contract stays unverified. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n",
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            "questions": [
              {
                "question": "D3 \u2014 R3: Should test 1 also assert that a successful charge hits Stripe exactly once?\nProject/branch/task: gstack-plan-count-0k3O7z on main, HOLD SCOPE review, Section 6 (Test Review).\nELI10: processPayment has a retry loop. Test 2 proves it retries once when Stripe fails twice. Nothing proves it STOPS retrying when Stripe succeeds. A bug in the loop condition could charge the card twice and still return a perfect receipt, so test 1 as approved (D1) stays green. The factory already records every Stripe call; this is one more line in test 1 reading that record.\nStakes if we pick wrong: a duplicate-charge regression ships with two green tests named for the exact code path it broke; users see two charges on their statement and you find out from support tickets.\nRecommendation: A because the observation helper already exists, it is one assertion in a test already being written, and duplicate charges are the payment bug users notice most.\nCompleteness: A=10/10, B=7/10",
                "header": "R3 Test 1",
                "multiSelect": false,
                "options": [
                  {
                    "label": "A) Add single-attempt assertion (recommended)",
                    "description": "\u2705 Catches retry-after-success (double charge) using the mock call history already exposed by the factory.\n\u2705 One line in test 1; no new fixtures, files or production changes; stays inside HOLD SCOPE.\n\u274c Adds a contract line the plan must document (\"one attempt on success\"); count must be scoped to charge calls if the history mixes call types."
                  },
                  {
                    "label": "B) Keep test 1 as approved (R1 only)",
                    "description": "\u2705 Smallest diff; exactly what D1 approved, nothing more.\n\u2705 No new contract text to maintain in the plan.\n\u274c A double-charge regression passes both new tests; no known test elsewhere pins single-attempt-on-success."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D3 \u2014 R3: Should test 1 also assert that a successful charge hits Stripe exactly once?\nProject/branch/task: gstack-plan-count-0k3O7z on main, HOLD SCOPE review, Section 6 (Test Review).\nELI10: processPayment has a retry loop. Test 2 proves it retries once when Stripe fails twice. Nothing proves it STOPS retrying when Stripe succeeds. A bug in the loop condition could charge the card twice and still return a perfect receipt, so test 1 as approved (D1) stays green. The factory already records every Stripe call; this is one more line in test 1 reading that record.\nStakes if we pick wrong: a duplicate-charge regression ships with two green tests named for the exact code path it broke; users see two charges on their statement and you find out from support tickets.\nRecommendation: A because the observation helper already exists, it is one assertion in a test already being written, and duplicate charges are the payment bug users notice most.\nCompleteness: A=10/10, B=7/10": "A) Add single-attempt assertion (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-15T10:14:16.187Z"
          },
          "savedPlan": "# Synthetic ledger for public native replay\n\nSource plan: PLAN.md. This document is a free-test reconstruction, not the original saved artifact.\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R3 \u2014 user | Payment test review; source PLAN.md. | Test 1 asserts receipt only (R1) | Also assert Stripe mock call history length === 1 in test 1 | unresolved | pending actual answer |\n\n### R3 options\n\n| Option | Summary | Effort | Risk | Pros | Cons |\n|---|---|---|---|---|---|\n| A) Add single-attempt assertion (recommended) | \u2705 Catches retry-after-success (double charge) using the mock call history already exposed by the factory. \u2705 One line in test 1; no new fixtures, files or production changes; stays inside HOLD SCOPE. \u274c Adds a contract line the plan must document (\"one attempt on success\"); count must be scoped to charge calls if the history mixes call types. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n| B) Keep test 1 as approved (R1 only) | \u2705 Smallest diff; exactly what D1 approved, nothing more. \u2705 No new contract text to maintain in the plan. \u274c A double-charge regression passes both new tests; no known test elsewhere pins single-attempt-on-success. | S | medium | Review the offered commitment | Preserve stated tradeoff |\n",
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      "observationSha256": "84db0f097c2147bfadf690fa99bcb0e90967971dc8faac3d111ffac256b0db0e",
      "terminal": ".context/sep15-ship-consolidation/remaining-paid-periodic-repairs/executions/8525fd4abad1e54de1aaaa9a5692202d4b13bd25/all/run/phases/periodic-independent/shards/skill-e2e-plan-ceo-finding-count/pty-count/ship-all-8525fd4a-f2f6397b-728c-4530-9c5b-e5ccb679aff9/plan-ceo-review-1789466894129-rWjscQ/terminal.visible.log",
      "terminalSha256": "e23966e1805e98ff652ce9b644d2273c06128caf44c5ad4cf8a08b44b37667c6",
      "syntheticSavedPlans": true,
      "limitations": "All five native calls and ACKs are exact. Native JSONL and original saved plan were removed at shard cleanup before this diagnosis; synthetic ledger excerpts preserve publicly visible row/proposal structure but do not prove original saved bytes or mutation timestamps."
    }
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  "attributedCurrentCab3": {
    "source": "cab3edc8b24f873b55f6edc6d98b60981eda52cb",
    "captureSha256": "0a01704f8d4ab76d4bb5c0d87d1c7ef8f004140ac9611f6bbac1bf0d4f4b5801",
    "rows": [
      {
        "attempt": "plan-ceo-review-1789499342771-rScfRH",
        "originalFailure": "Unsupported current CEO decision; cannot exclude it from the 4\u20137 count: bc8d439e-0f48-416c-be56-9d01936d5088:toolu_01GBAEDftevNoJs9igKsh2HN",
        "call": {
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          "questions": [
            {
              "question": "D3 \u2014 R2 (Section 3, Database access): How does the new handler look up the user from `request.params.userId`: bound parameter, raw SQL fragment as planned, or raw SQL with manual escaping?\nProject/branch/task: main branch, CEO review (HOLD SCOPE) of the Payment Processing Integration plan.\nELI10: The handler receives a user ID as text that Stripe passed through untouched, and the plan pastes that text straight into a SQL query. The contracts say IDs can contain any punctuation or Unicode. So a completely legitimate ID with an apostrophe in it breaks the query, the database throws, Stripe retries the same broken query for days, and that customer never gets marked as paid. And if an ID ever contains SQL, it runs. The signature check and ownership guard do not protect the query; the plan says so explicitly.\nStakes if we pick wrong: a paying customer stuck unpaid with no attacker involved, or arbitrary SQL executing with the payment database role.\nRecommendation: A because parameter binding is the standard, explicit fix, reuses the existing DB client, and is the only option that also fixes the no-attacker correctness bug.\nCompleteness: A=10/10, B=1/10, C=5/10\nNet: A is a one-line change plus four tests that closes the sink; B ships a known correctness and injection bug; C hand-rolls what the client already does and gets Unicode wrong eventually.",
              "header": "R2 SQL lookup",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Bind the parameter / ORM finder (recommended)",
                  "description": "\u2705 `WHERE id = ?` with the opaque string bound (or `find_by`); no ID-format validation added, so every in-contract ID still resolves\n\u2705 Regression tests travel with it: ID with apostrophe, ID containing SQL, Unicode ID, unknown ID (hits the retained guard)\n\u274c Implementer must locate the existing DB client's binding API if the current lookup is hand-written\nEffort: S (human: ~1h incl. tests / CC: ~5 min)"
                },
                {
                  "label": "B) Keep raw SQL fragment (as planned)",
                  "description": "\u2705 Already written that way in the plan; zero change\n\u2705 No new API to learn\n\u274c Legit IDs with punctuation break the payment path permanently for that user; stored IDs containing SQL execute with the payment DB role\nEffort: none"
                },
                {
                  "label": "C) Raw SQL with manual escaping",
                  "description": "\u2705 Keeps the raw query shape the plan describes\n\u2705 Blocks the obvious single-quote case\n\u274c Escaping is DB- and encoding-specific; reimplements the client's binder; Unicode and multi-byte edge cases are where hand-rolled escaping fails\nEffort: S (human: ~2h / CC: ~5 min)"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D3 \u2014 R2 (Section 3, Database access): How does the new handler look up the user from `request.params.userId`: bound parameter, raw SQL fragment as planned, or raw SQL with manual escaping?\nProject/branch/task: main branch, CEO review (HOLD SCOPE) of the Payment Processing Integration plan.\nELI10: The handler receives a user ID as text that Stripe passed through untouched, and the plan pastes that text straight into a SQL query. The contracts say IDs can contain any punctuation or Unicode. So a completely legitimate ID with an apostrophe in it breaks the query, the database throws, Stripe retries the same broken query for days, and that customer never gets marked as paid. And if an ID ever contains SQL, it runs. The signature check and ownership guard do not protect the query; the plan says so explicitly.\nStakes if we pick wrong: a paying customer stuck unpaid with no attacker involved, or arbitrary SQL executing with the payment database role.\nRecommendation: A because parameter binding is the standard, explicit fix, reuses the existing DB client, and is the only option that also fixes the no-attacker correctness bug.\nCompleteness: A=10/10, B=1/10, C=5/10\nNet: A is a one-line change plus four tests that closes the sink; B ships a known correctness and injection bug; C hand-rolls what the client already does and gets Unicode wrong eventually.": "A) Bind the parameter / ORM finder (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-15T19:16:53.209Z"
        },
        "questionIssuedAt": "2026-09-15T19:16:52.574Z",
        "savedPlan": "# Plan: Payment Processing Integration (CEO review, HOLD SCOPE)\n\nWorking plan for `/plan-ceo-review`. Source plan: `PLAN.md` (repo root).\nBranch: `main` | Base: `main` | Platform: unknown (no remote) | Mode: HOLD SCOPE (user-selected)\nSession: `1008535-1789499328-496713f3` | Date: 2026-09-15\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (Architecture, user) | `PLAN.md` L10-11, L100-103: dispatcher available; name settled; bypass vs reuse open | Prior handler is dispatched via `WebhookDispatcher` | New class bypasses dispatcher with its own route | approved | D1 answer: option A. Register `Webhooks::StripePaymentWebhookHandler` with `WebhookDispatcher`; drop the bypass. Scope: routing only; class name and ownership goal unchanged. |\n| R2 (DB access, user) | `PLAN.md` L21-31: user_id forwarded unchanged, no SQL validation, opaque TEXT incl. punctuation/Unicode | Existing lookup uses DB client (binding assumed; unknown) | Raw SQL fragment built from `request.params.userId` | unresolved | pending |\n| R3 (Fan-out, user) | `PLAN.md` L52-53, L60-73, L85-97: mail client rethrows; records failed attempt durably; alerts exist; DB exceptions -> 500 -> Stripe retry | Prior handler behavior unknown | Inline email, exception escapes handler | approved | D2 answer: option A. Commit the user update before the send; rescue `MailTimeout` and the mail client's named delivery error (no catch-all); emit one correlated structured warning; return normally (200). Scope: email leg ordering + rescue + its 3 regression tests. Other coverage stays with R4. |\n| R4 (Tests, user) | `PLAN.md` L76-80, L118-119: manual staging replay only; no automated handler coverage | Integration suite covers prior handler path | No new tests | unresolved | pending |\n| R5 (Performance, user) | `PLAN.md` L81-84, L92-95, L121-123: order loop is data loading; DB+ingress bounded to 2s | Prior handler behavior unknown | One query per order | unresolved | pending |\n\nMode: HOLD SCOPE was chosen explicitly by the user in the request (`PLAN.md` L1). No mode question is asked.\n\n### R1 options: how the new handler is wired\n\nThe plan's stated reason for bypassing `WebhookDispatcher` is \"clean namespace\nseparation\". The approved name `Webhooks::StripePaymentWebhookHandler` already lives in\nthe application-owned namespace regardless of how it is invoked, so naming does not\nrequire a bypass. What a bypass does buy is independence from the dispatcher's\nregistration API; what it costs is a second routing path to keep in sync with the\ningress guards.\n\n- **A) Register the new class with `WebhookDispatcher`** (S effort, low risk). One class, one registration entry, one route. Pros: reuses the routing the prior handler already used; the feature flag can switch the dispatcher target without touching ingress; one place to read to know which handler owns an event. Cons: coupled to the dispatcher's handler interface; if the dispatcher applies its own middleware, the new class inherits it whether wanted or not. Reuse: full. Verification: the flag-controlled staging replay exercises the same route as production.\n- **B) New class, bypass the dispatcher with a dedicated route** (M effort, medium risk). As planned. Pros: zero dependency on the dispatcher API; separate route can be flagged independently. Cons: a second entry point that must sit inside the same ingress guards (signature, event filter, dedup, lock, ownership) and be verified to; \"namespace separation\" is already delivered by the name, so the bypass has no remaining rationale in the plan; two routing paths to maintain and to reason about during rollback. Reuse: partial. Verification: must additionally prove the bypass route is guarded identically.\n- **C) No new class: implement the orchestration as an app-owned method inside `WebhookDispatcher`** (S effort, medium risk). Pros: smallest diff. Cons: puts payment-specific orchestration into a shared routing module, the opposite of the approved motivation to own it in a dedicated handler; harder to test in isolation. Reuse: full. Verification: same as A.\n\n```\nCommitment                         | Source/approval or pending | Current            | A            | B            | C\nHandler class name                 | approved (PLAN L100-103)   | n/a                | Webhooks::\u2026  | Webhooks::\u2026  | none (method)\nRouting path                       | pending R1                 | dispatcher         | dispatcher   | new route    | dispatcher\nRuns inside unchanged ingress guards | approved (PLAN L38-39)   | yes                | yes          | must verify  | yes\nFeature flag / rollback path       | approved (PLAN L74-75)     | existing           | existing     | existing + route | existing\nOrchestration owned in app code    | approved motivation        | no                 | yes          | yes          | partially\n```\n\nRecommendation: A. It keeps the approved name and ownership goal, reuses the routing path the flag and rollback already exercise, and removes the one architectural choice whose stated rationale no longer holds.\n\n### R2 options: user lookup query\n\n- **A) Bind the value: DB client parameter binding or the ORM finder** (S, low risk). `WHERE id = ?` with the opaque string bound, or `User.find_by(id: user_id)`. No format validation is added (contract: every nonempty string is a valid ID; adding a regex would reject real users). Verification traveling with the change: lookup tests with `O'Brien`, `x; DROP TABLE users;--`, a Unicode ID, and an unknown ID (hits the retained unknown-user guard). Pros: removes the sink entirely; matches how the rest of the app talks to the DB (existing DB client); zero runtime cost. Cons: none material; if the existing lookup is a hand-written query the implementer must find the client's binding API.\n- **B) Keep the raw SQL fragment** (0 effort, high risk). Pros: none beyond \"already written that way\". Cons: both threats above unmitigated; a correctness bug for in-contract IDs with no attacker at all.\n- **C) Raw SQL with manual escaping/quoting** (S, medium risk). Pros: keeps the raw query shape. Cons: escaping is DB- and encoding-specific, easy to get wrong for Unicode, and reimplements what the client's binder already does. Rung 1 of the reuse ladder (existing helper) beats rung 5 (hand-rolled).\n\n```\nCommitment                       | Source/approval or pending    | Current (existing lookup) | A               | B          | C\nQuery built by interpolation     | pending R2                    | unknown                   | no              | yes        | yes (escaped)\nValue bound as parameter         | pending R2                    | unknown                   | yes             | no         | no\nID-format validation added       | contract forbids (PLAN L24-26)| none                      | none            | none       | none\nUnknown-user path                | approved (PLAN L43-44)        | guard acks 200            | unchanged       | unchanged  | unchanged\nRegression tests for quote/Unicode/unknown ID | pending R2 (travel with change) | none      | 4 cases         | none       | none\n```\n\nRecommendation: A. Engineering preference: \"Security is not optional; explicit over clever\":\nparameter binding is the explicit, standard fix and the only option that also fixes the\nno-attacker correctness bug.\n",
        "savedPlanSha256": "41f36214c09c8792b097627a2244f2b292161b019fd26fdf485e589f35da083e",
        "savedAt": "2026-09-15T19:16:36.285Z",
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-e18ize81/gstack-paid-shard-t87Gnp/tmp/gstack-e2e-plan-ceo-GcqzTl/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module \u2014 we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
        "provenance": "Exact ordered excerpts from the retained pre-ask current report: source declaration, complete active ledger and complete owned comparison. Full original report hash is retained; excerpt is not claimed to equal that full file."
      },
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        "attempt": "plan-ceo-review-1789499847692-bg2PAD",
        "originalFailure": "Unsupported current CEO decision; cannot exclude it from the 4\u20137 count: 6ca9fec2-b15d-4309-8bf3-0e2a804bd356:toolu_01Xqpezdjtts5RKQTj6YQaJA",
        "call": {
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          "questions": [
            {
              "question": "D3 (ledger R1) \u2014 How should the new handler be reached: bypass WebhookDispatcher, or register through it?\nProject/branch/task: gstack-plan-count-zz2c4V on main, CEO review of the Stripe payment handler plan.\nELI10: Today one dispatcher module decides which code runs for each Stripe event. The plan wants the new payment handler wired in directly beside it for a \"clean namespace\". You can have the clean namespace either way; the real question is whether Stripe events keep one door into the app or grow a second one.\nStakes if we pick wrong: a second routing path means the flag switch, handler-identity trace, and every future event type get wired twice, and the rollback checklist has two paths to verify.\nRecommendation: B because it keeps the settled class name and namespace while leaving one routing path that the dispatcher's existing tests already cover.\nCompleteness: A=6/10, B=9/10, C=5/10\nNet: one line inside the dispatcher vs a permanent second routing path to maintain.",
              "header": "Routing R1",
              "multiSelect": false,
              "options": [
                {
                  "label": "B) New class via dispatcher (recommended)",
                  "description": "\u2705 One routing path; Webhooks::StripePaymentWebhookHandler stays in the app namespace exactly as approved. \u2705 Dispatcher's existing routing tests and handler-identity tracing cover the registration for free. \u274c Requires a one-line edit inside the shared WebhookDispatcher module. Effort human ~0.5d / CC ~15 min."
                },
                {
                  "label": "A) New class, bypass dispatcher",
                  "description": "\u2705 Zero edits to WebhookDispatcher; new code is fully isolated. \u2705 Matches the plan as written, no re-litigation. \u274c Second routing path: flag, trace attribution and future event types are wired twice and the rollback checklist must verify both. Effort human ~0.5d / CC ~10 min."
                },
                {
                  "label": "C) Logic inside dispatcher",
                  "description": "\u2705 Fewest files touched; no new class at all. \u2705 Single routing path by construction. \u274c Contradicts the settled class name and the motivation to move orchestration into app-owned code; fattens a shared module with payment logic. Effort human ~0.5d / CC ~15 min."
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D3 (ledger R1) \u2014 How should the new handler be reached: bypass WebhookDispatcher, or register through it?\nProject/branch/task: gstack-plan-count-zz2c4V on main, CEO review of the Stripe payment handler plan.\nELI10: Today one dispatcher module decides which code runs for each Stripe event. The plan wants the new payment handler wired in directly beside it for a \"clean namespace\". You can have the clean namespace either way; the real question is whether Stripe events keep one door into the app or grow a second one.\nStakes if we pick wrong: a second routing path means the flag switch, handler-identity trace, and every future event type get wired twice, and the rollback checklist has two paths to verify.\nRecommendation: B because it keeps the settled class name and namespace while leaving one routing path that the dispatcher's existing tests already cover.\nCompleteness: A=6/10, B=9/10, C=5/10\nNet: one line inside the dispatcher vs a permanent second routing path to maintain.": "B) New class via dispatcher (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-15T19:21:27.078Z"
        },
        "questionIssuedAt": "2026-09-15T19:21:26.936Z",
        "savedPlan": "# Plan: Payment Processing Integration (CEO review working plan)\n\nSource: `PLAN.md` on `main` (commit 8584ee5). Mode: HOLD SCOPE (explicit user choice).\nReviewer: /plan-ceo-review, session 1036402-1789499833-d84e0a78, 2026-09-15.\nBase branch: `main` (no remote configured; git-native fallback).\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (user) Handler routing | Plan line 100-103: class name settled; \"add a separate implementation or reuse WebhookDispatcher remains open\". Architecture section proposes bypass. | Prior library-adapter handler, invoked via ingress; dispatcher available | A) bypass dispatcher with new class; B) new class registered through `WebhookDispatcher`; C) implement inside `WebhookDispatcher`, no new class | unresolved | pending |\n| R2 (user) Lookup query construction | Plan line 21-26: adapter does no SQL validation, forwards string unchanged, \"a valid signature does not make it safe for SQL\"; IDs are opaque TEXT with punctuation/Unicode. DB-access section interpolates it into a raw SQL fragment. Contradiction. | Prior handler's lookup (method unknown) | A) bound parameter / ORM finder on TEXT id; B) raw fragment as written (not viable) | unresolved | pending |\n| R3 (user) Email-leg exception handling | Plan line 52-53, 60-63, 88-97: mail client rethrows MailTimeout/send errors, durably records the attempt, publishes failure rate; ingress turns exceptions into 500 + Stripe retry; runbook says never replay payment blindly. Fan-out section: \"no error handling on the email leg\". | Prior handler behavior unknown | A) rescue mail errors after the DB commit, log with correlation, return 200; B) leave unhandled (500 + Stripe retry); C) enqueue email as a job | unresolved | pending |\n| R4 (user) Automated tests | Plan line 76-80, 118-119: manual staging replay only; \"no new automated tests\"; existing integration suite is not shown to cover this handler. | None for new handler | A) handler unit + integration tests for every traced path; B) none | unresolved | pending (resolve in Tests section) |\n| R5 (user) Order loading | Plan line 121-123: per-order fetch in a loop; DB+ingress deadline 2s; a deadline blow is a DB exception -> 500 -> retry, which repeats the same loop. | Per-order loop | A) single query for the user's orders; B) keep loop | unresolved | pending (resolve in Performance section) |\n| N1 (settled) Handler class name | Plan line 100-102 | `Webhooks::StripePaymentWebhookHandler` if a separate class exists | none | approved | plan text, \"This naming choice is settled\" |\n\n## Option comparisons\n\n### R1 Handler routing\nRetained facts across all options: name `Webhooks::StripePaymentWebhookHandler`\n(N1); ingress guards unchanged; only `payment_intent.succeeded` reaches this code.\n\n| Option | Summary | Effort | Risk | Pros | Cons | Reuse / verification |\n|---|---|---|---|---|---|---|\n| A) Separate class, bypass dispatcher | Ingress calls the new class directly; dispatcher untouched | S (human ~0.5d / CC ~10 min) | medium | Clean namespace; zero edits to dispatcher | Second routing path to maintain; handler-identity trace, flag switch and future event types must be wired twice; the 12-month system has two ways to reach a handler | Reuses nothing from dispatcher; staging replay covers only this path |\n| B) Separate class, registered in dispatcher | New class in the app namespace; `WebhookDispatcher` routes `payment_intent.succeeded` to it behind the existing flag | S (human ~0.5d / CC ~15 min) | low | One routing path; namespace separation kept; dispatcher's existing routing tests cover the registration; future event types follow the same pattern | One small edit inside dispatcher | Reuses dispatcher routing + its tests |\n| C) Implement inside dispatcher | Orchestration logic lives in `WebhookDispatcher` | S | medium | Fewest files | Fattens a shared module with payment logic; contradicts the settled N1 name and the app-owned-code motivation | Reuses dispatcher; harder to unit test in isolation |\n\n```text\nCommitment                         | Source/approval or pending | Current            | A        | B        | C\nClass name Webhooks::Stripe...     | N1 approved                | n/a                | yes      | yes      | no class\nRouting path                       | R1 pending                 | ingress->prior     | direct   | dispatch | dispatch\nDispatcher edited                  | R1 pending                 | no                 | no       | 1 line   | many\nGuards / flag / rollback           | retained, approved         | unchanged          | same     | same     | same\n```\nNo independently selectable commitment hides inside these options; one row.\n",
        "savedPlanSha256": "ebce0cf640abca08c6662cbf5c026d715a23ac03289fb875abe7a00561745ab8",
        "savedAt": "2026-09-15T19:21:14.518Z",
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-e18ize81/gstack-paid-shard-t87Gnp/tmp/gstack-e2e-plan-ceo-bfdapo/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module \u2014 we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
        "provenance": "Exact ordered excerpts from the retained pre-ask current report: source declaration, complete active ledger and complete owned comparison. Full original report hash is retained; excerpt is not claimed to equal that full file."
      }
    ]
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    "rows": [
      {
        "kind": "tests",
        "call": {
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          "questions": [
            {
              "question": "D4 — What automated test coverage ships with the new handler?\nProject/branch/task: `main`, Payment Processing Integration plan, HOLD SCOPE review, ledger row D4.\nELI10: The plan says \"no tests, the existing integration suite will catch regressions\". But the new class sits behind a feature flag the existing suite never turns on, so that suite tests the old handler, not this one. The three decisions we just made (dispatcher routing, bound SQL parameter, mail-error rescue) are exactly the kind of behavior that quietly regresses unless a test pins it.\nStakes if we pick wrong: a future edit re-introduces string-built SQL or lets a mail timeout 500 the webhook, and nobody notices until staging replay or production.\nRecommendation: A because every branch of the handler is enumerable today, the harness and client doubles already exist, and it is ~20 minutes of CC time.\nCompleteness: A=10/10, B=6/10, C=1/10\nNet: full branch coverage now vs wiring-only coverage vs relying on a suite that does not run this code.",
              "header": "Tests",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Unit suite + dispatcher integration test (recommended)",
                  "description": "✅ Pins D1/D2/D3: flag routing both ways, quote and non-ASCII IDs, timeout→200 with committed update, other errors propagate\n✅ Covers retained semantics too: unknown user, missing address skip, zero orders → one receipt (human ~1 day / CC ~20 min)\n❌ Adds a test file plus DB/mail client doubles to maintain"
                },
                {
                  "label": "B) Integration tests only",
                  "description": "✅ Exercises the real dispatcher wiring and guard stack end to end\n✅ Two tests, small to write and read\n❌ Cannot inject a quote-bearing ID or a non-mail exception, so the D2 and D3 fixes are unguarded"
                },
                {
                  "label": "C) None (as written)",
                  "description": "✅ Zero test code to write or maintain\n✅ Manual staging replay checklist still runs before broad enablement\n❌ The existing suite never enables the flag; the new money-touching code ships with no automated coverage"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D4 — What automated test coverage ships with the new handler?\nProject/branch/task: `main`, Payment Processing Integration plan, HOLD SCOPE review, ledger row D4.\nELI10: The plan says \"no tests, the existing integration suite will catch regressions\". But the new class sits behind a feature flag the existing suite never turns on, so that suite tests the old handler, not this one. The three decisions we just made (dispatcher routing, bound SQL parameter, mail-error rescue) are exactly the kind of behavior that quietly regresses unless a test pins it.\nStakes if we pick wrong: a future edit re-introduces string-built SQL or lets a mail timeout 500 the webhook, and nobody notices until staging replay or production.\nRecommendation: A because every branch of the handler is enumerable today, the harness and client doubles already exist, and it is ~20 minutes of CC time.\nCompleteness: A=10/10, B=6/10, C=1/10\nNet: full branch coverage now vs wiring-only coverage vs relying on a suite that does not run this code.": "A) Unit suite + dispatcher integration test (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-15T20:46:09.590Z"
        },
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-mp0k822s/gstack-paid-shard-Fo9CFs/tmp/gstack-e2e-plan-ceo-31amSq/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module — we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
        "savedPlan": "# Plan: Payment Processing Integration — CEO Review (HOLD SCOPE)\n\nReviewed plan: `PLAN.md` @ `27e1cb5` on `main`. Mode: HOLD SCOPE (explicit user choice).\nReview skill: /plan-ceo-review. Date: 2026-09-15. Session: 1338558-1789504716-9df5e124.\n\n## Context\n\nThe approved motivation (from PLAN.md \"Existing contracts retained\") is to move payment\norchestration out of the prior library-adapter handler into application-owned code while\nkeeping the existing payment and receipt product behavior byte-for-byte. The handler runs\ninside unchanged ingress guards: Stripe signature verification, `payment_intent.succeeded`\nfiltering, event-ID dedup, per-user lock, ownership guard, unknown-user guard, recipient\npolicy, mail-client idempotency key + durable retry record, feature flag + tested rollback.\n\nThis review holds that scope. It traces every failure path of the four proposed sections\n(Architecture, Database access, Webhook fan-out, Performance) plus Tests, and records each\npending decision in the ledger below. Nothing in the ledger is approved until its\n\"Exact approval and scope\" cell cites an actual user answer.\n\n## Pre-review system audit\n\n- Repo state: one commit, two files (`CLAUDE.md`, `PLAN.md`). No code yet, no TODOS.md,\n  no stash, no other branches, no TODO/FIXME markers. Nothing in flight.\n- Retrospective: no prior review cycles or reverts to compare against.\n- Design doc / handoff: none (user skipped /office-hours). Brain digests: none. Learnings: 0.\n- UI scope: none. Section 11 will be a no-UI skip.\n- Landscape (search fallback via WebSearch; Aside not installed):\n  - Layer 1 (tried and true): signature on raw body, dedup on `event.id`, parameterized\n    SQL, idempotent side effects, respond within Stripe's 10s deadline, expect retries up\n    to 72h.\n  - Layer 2 (current writing): same, plus \"keep email off the request path or make the\n    job idempotent\".\n  - Layer 3 (first principles): the retained mail-client contracts (provider idempotency\n    key per PaymentIntent, durable attempt record before rethrow, 1s deadline) already\n    make an inline send safe to *repeat*. The remaining question is not \"inline vs async\"\n    but \"what should an unhandled `MailTimeout` do to the webhook response\" (see D3).\n\n## Step 0A — Premise Challenge\n\n1. Right problem? Yes. Owning the orchestration code is a reasonable prerequisite for\n   any future payment change, and the contracts section shows the team already knows the\n   guard stack. No simpler framing beats \"port the handler behind the existing flag\".\n2. Outcome: identical user-visible behavior (status flips to paid, one receipt) with the\n   code now editable by the app team. The plan reaches it directly; no proxy problem.\n3. Do nothing: pain is real but not urgent (library adapter keeps working). This lowers\n   the bar for shipping *fast* and raises the bar for shipping *correct*: there is no\n   deadline that justifies the raw SQL fragment, the missing mail handling, or zero tests.\n\n## Step 0B — Existing Code Leverage\n\n| Sub-problem | Existing code (per contracts) | Plan reuses? |\n|---|---|---|\n| Signature, event filter, dedup, per-user lock, ownership guard | ingress middleware + webhook event guard | Yes (unchanged) |\n| Routing events to handlers | `WebhookDispatcher` | **No — bypassed** (D1) |\n| User lookup | shared DB client with tracing | Partly — plan builds a raw SQL fragment instead of the client's parameter binding (D2) |\n| User update | existing `payment_status=paid` + intent-ID assignment | Yes |\n| Email | shared mail client (idempotency key, 1s deadline, durable retry record) | Yes, but plan drops the exception on the floor of the handler (D3) |\n| Order summary loading | (unspecified) | Plan loops one query per order (D5) |\n| Verification | staging replay checklist (manual) | Yes; no automated coverage (D4) |\n\nRebuilding check: the only thing being rebuilt is *dispatch* (D1). Everything else is\nreuse, which is the right shape for a port.\n\n## Step 0C — Dream State Mapping\n\n```\n  CURRENT STATE                      THIS PLAN                          12-MONTH IDEAL\n  Library-adapter handler owns       App-owned Webhooks::               App-owned handlers for every\n  orchestration; app can only        StripePaymentWebhookHandler        Stripe event type, one dispatch\n  configure it.                      behind the existing flag.          path, parameterized data access,\n  Guards live in ingress.     --->   Guards unchanged.           --->   handler-level regression suite,\n  One receipt per PaymentIntent,     Same product semantics.            order summary loaded in one\n  order summary in receipt.                                             query, mail outcome never\n                                                                        decides the webhook status.\n```\n\nThe plan moves toward the ideal on ownership. It moves *away* on three axes unless the\nledger rows below resolve: a second dispatch path (D1), string-built SQL (D2), and zero\nautomated coverage on the one code path that touches money (D4).\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 dispatch path — plan author | PLAN.md L10-11, L100-103: dispatcher \"remains available\"; separate class vs reuse \"remains open\"; name settled as `Webhooks::StripePaymentWebhookHandler` | Prior library-adapter handler invoked via `WebhookDispatcher` | ~~Bypass~~ → Register `Webhooks::StripePaymentWebhookHandler` in `WebhookDispatcher` for `payment_intent.succeeded`; existing flag selects prior vs new | approved | User answer to D1: \"A) Reuse WebhookDispatcher\". Scope: routing only; class name unchanged; guards/flag/tracing untouched. |\n| D2 user lookup query — plan author | PLAN.md L21-26, L110-112: adapter forwards unchanged, no SQL sanitization, IDs are opaque TEXT incl. punctuation/Unicode | Unknown (prior handler's lookup) | ~~Raw SQL fragment~~ → bind `request.params.userId` as a query parameter through the shared DB client | approved | User answer to D2: \"A) Bound parameter\". Scope: lookup query construction only; regression tests for quote-bearing and non-ASCII IDs travel with it (carried into D4). |\n| D3 email-leg failure handling — plan author | PLAN.md L52-53, L60-63, L85-97, L114-116: mail client rethrows; provider idempotency key; durable attempt record; 1s `MailTimeout`; no handler-side handling | Unknown (prior handler) | ~~Propagate~~ → commit the user update, then send inline; rescue only `MailTimeout` and the mail client's provider-error class, log a structured `notification_deferred` warning with event/user/intent IDs, continue to completion bookkeeping and 200; all other exceptions propagate | approved | User answer to D3: \"A) Commit, rescue named mail errors, 200\". Scope: handler-side handling and transaction boundary only; mail client, recipient policy, runbook, dashboards unchanged. Tests for the three rescue cases travel with it (carried into D4). |\n| D4 automated tests — plan author | PLAN.md L76-80, L118-119: manual staging replay only; \"no new automated tests\" | Existing integration suite (does not exercise new class) | None | unresolved | — |\n| D5 order loading — plan author | PLAN.md L81-84, L92-95, L121-123: one receipt with order summary; DB+ingress deadline 2s combined | Unknown (prior handler) | One DB query per order in a loop | unresolved | — |\n\nApproval readiness: PENDING\n\n### D1 — dispatch path: options (pending)\n\nPLAN.md L38-39 asserts \"the new handler runs inside those unchanged guards\". Whether that\nassertion holds depends on where handler invocation is wired. If `WebhookDispatcher` is the\ncomponent the guards hand the event to, bypassing it means the new class is invoked from\nsomewhere else and the guard wrapping has to be re-proven for that new path.\n\n| Commitment | Source/approval or pending | Current | A) Reuse dispatcher | B) Bypass dispatcher |\n|---|---|---|---|---|\n| Class name `Webhooks::StripePaymentWebhookHandler` | settled (L100-103) | n/a | same | same |\n| Routing of `payment_intent.succeeded` | pending | via `WebhookDispatcher` | via `WebhookDispatcher`, new class registered | new entry point, dispatcher skipped |\n| Guards wrap the handler (sig, dedup, lock, ownership) | asserted L38-39 | proven for prior handler | inherited unchanged | must be re-verified for the new path |\n| Feature flag switch point | existing (L74-75) | existing rollout path | dispatcher registration picks prior vs new | ingress must pick between two entry points |\n| Handler identity in outcome traces | existing (L98-99) | present | unchanged | must be confirmed for the new path |\n| Namespace separation | plan goal (L107-108) | n/a | achieved by class namespace | achieved by class namespace and routing |\n\n- **A) Reuse `WebhookDispatcher`** — register the new class as the dispatcher's handler for\n  this event type; the existing flag selects prior vs new. Effort S, risk low. Pros: one\n  dispatch path; the L38-39 guard assertion stays true by construction; tracing and flag\n  rollback unchanged. Cons: the new class must satisfy the dispatcher's handler interface;\n  \"separation\" is namespace-only, not routing-level. Reuse: dispatcher, flag, tracing.\n  Verification: existing staging replay covers it as-is.\n- **B) Bypass `WebhookDispatcher`** (as written) — a separate invocation path for the new\n  class. Effort M, risk medium. Pros: zero coupling to the dispatcher interface; the\n  `Webhooks::` module is fully self-contained. Cons: two dispatch paths to maintain; the\n  guard, trace, and flag contracts all have to be re-established and re-verified for the\n  new path; rollback now toggles between entry points rather than handlers. Reuse: flag\n  only. Verification: staging replay plus explicit checks that each guard fired.\n- No third distinct option: the name is settled and the only open axis is dispatcher\n  reuse; variants (where the flag check lives) are implementation details of A.\n\nRecommendation: A. Completeness: A=9/10, B=6/10 (B leaves the guard re-verification work\nunplanned).\n\n**D1 resolved → A.** Amendment applied to Architecture section below.\n\n### D2 — user lookup query: options (pending)\n\nThe contracts are explicit (L21-26): the adapter forwards `metadata.user_id` unchanged,\nperforms no SQL-format validation, and user IDs are opaque TEXT including punctuation and\nUnicode. A raw SQL fragment built from that string is therefore wrong on two independent\ngrounds, before any attacker is considered:\n\n1. **Correctness.** A legitimate ID containing `'`, `\\`, or `;` produces a malformed or\n   different query. That user is looked up as \"unknown\", the guard at L43-44 returns 200\n   and logs, and the payment is silently never marked paid for them (Stripe considers the\n   event delivered). No alert fires because the unknown-user path is a normal outcome.\n2. **Injection.** The ownership guard (L27-31) proves the ID matches the stored binding,\n   so the string reaching SQL is whatever the application stored as that user's ID. If ID\n   assignment is ever user-influenced (sign-up import, SSO subject, migration), the raw\n   fragment is a SQL injection (attacker-controlled text executed as part of the query)\n   against the payments path. A valid Stripe signature does not make it safe (L23).\n\n| Commitment | Source/approval or pending | Current | A) Bound parameter via shared DB client | B) Escape then interpolate | C) Raw fragment (as written) |\n|---|---|---|---|---|---|\n| Query construction | pending | unknown (prior handler) | `WHERE id = $1` with the ID bound | driver escape function, then string concat | string concat, no escaping |\n| Punctuation/Unicode IDs (L24-26) | contract | must work | correct by construction | correct if escape matches server encoding | broken |\n| Injection exposure | security preference | n/a | none | low but encoding-dependent | full |\n| Tracing (L60-63) | existing | user ID + event ID attached | unchanged (same client) | unchanged | unchanged |\n| Diff size | | | 1 line | 2 lines | 1 line |\n\n- **A) Bound parameter through the shared DB client** — the client already attaches the\n  user ID and event ID to traces; use its parameter binding. Effort S, risk low. Pros:\n  correct for every opaque TEXT value; eliminates the injection class; smallest honest\n  diff. Cons: none beyond confirming the client exposes binding (it is the standard\n  path). Reuse: shared DB client. Verification: unit test with an ID containing `'`\n  and a non-ASCII ID (part of D4).\n- **B) Escape then interpolate** — call the driver's escaping helper before building the\n  fragment. Effort S, risk medium. Pros: keeps the fragment shape. Cons: correctness\n  depends on the escaper matching the connection's character set; this is the classic\n  multibyte-bypass surface; reviewers must re-check it on every edit. Reuse: driver\n  helper. Verification: same tests as A plus encoding cases.\n- **C) Raw fragment (as written)** — Effort S, risk high. Pros: none that A lacks. Cons:\n  fails the retained contract at L24-26 for ordinary users; injection surface on the\n  money path. Not viable.\n\nRecommendation: A. Completeness: A=10/10, B=6/10, C=2/10.\n\n**D2 resolved → A.** Amendment applied to Database access section below.\n\n### D3 — email-leg failure handling: options (pending)\n\nFailure trace of the fan-out as written (\"both inline; no error handling on the email leg\"):\n\n```\n  lock(user) held by event guard\n    │\n    ├─ lookup(user)  ──DB error──▶ raise ──▶ ingress 500 ──▶ Stripe retry   (retained, fine)\n    │      └─ unknown user ──▶ 200 + log, stop                              (retained, fine)\n    ├─ update(user): payment_status=paid, intent_id   [TXN]                 (idempotent, L40-42)\n    ├─ email(user)\n    │      ├─ nil/empty address ──▶ recipient policy: skip record + warn + counter, continue  (retained)\n    │      ├─ success ──▶ provider records idempotency key                                     (retained)\n    │      └─ MailTimeout / provider error\n    │              └─ client durably records attempt, then RETHROWS to handler (L88-89, L96-97)\n    │                     └─ handler has no rescue ──▶ raise ──▶ ingress logs FAILED WEBHOOK, 500\n    │                            └─ completion marker NOT recorded (raised before bookkeeping)\n    │                                   └─ Stripe retries (backoff, up to 72h) ──▶ lock ──▶ lookup ──▶\n    │                                       update (same values) ──▶ email again (same key)\n    └─ completion bookkeeping ──▶ 200\n```\n\nTwo things fall out of that trace:\n\n1. **The transaction boundary is unspecified.** If `update` and `email` share one DB\n   transaction, a `MailTimeout` rolls back the payment update: a paid customer stays\n   unpaid for the length of a mail-provider outage, and the mail client's durable attempt\n   record now points at a payment that was never committed, so the runbook's \"retry only\n   the notification\" would send a receipt for an uncommitted payment. Every viable option\n   must commit the update before the send.\n2. **Propagation converts a notification failure into a webhook failure.** With the\n   retained contracts this is eventually consistent (update is idempotent; provider key\n   suppresses duplicate successful sends), but: the \"failed webhook processing\" alert\n   (L58-59) fires for committed payments; Stripe's retry channel and the notification retry\n   procedure (L88-91) both chase the same send; and the payment endpoint's health at Stripe\n   becomes a function of the mail provider's health for up to 72h. Sustained 5xx over days\n   is also how Stripe ends up disabling an endpoint.\n\nThe retained contracts are what make a rescue *safe*: the client records the attempt\nbefore rethrowing, publishes failure rate, and the backlog/age alert plus runbook already\nown the recovery. Without those, catching would be a silent failure. With them, catching\nthe named mail errors is the path that keeps \"webhook failed\" meaning \"webhook failed\".\n\n| Commitment | Source/approval or pending | Current | A) Commit, rescue named mail errors → 200 | B) Commit, propagate → 500 | C) Update + send in one TXN, propagate |\n|---|---|---|---|---|---|\n| Update committed before send | pending (unspecified) | unknown | yes | yes | no (rollback on mail error) |\n| Exceptions rescued in handler | pending (L116: none) | unknown | `MailTimeout` + mail client's provider-error class only; everything else propagates | none | none |\n| Webhook status on mail failure | pending | unknown | 200 (payment committed, notification in retry backlog) | 500 (Stripe retries whole event) | 500 (Stripe retries whole event) |\n| Recovery owner for failed send | existing (L88-91) | notification retry procedure | notification retry procedure only | Stripe retry AND notification retry procedure | Stripe retry (attempt record points at uncommitted payment) |\n| Ingress \"failed webhook\" alert (L58-59) | existing | fires on real failures | fires only on real failures | fires for every failed receipt | fires for every failed receipt |\n| Handler log on rescue | observability preference | n/a | structured warn: event ID, user ID, intent ID, error class, `notification_deferred` | n/a (ingress logs) | n/a |\n| Missing-address path (L45-51) | retained | skip record | unchanged | unchanged | unchanged |\n\n- **A) Commit, then rescue the named mail errors and return 200** — after the committed\n  update, wrap the send in a rescue for `MailTimeout` and the mail client's provider-error\n  base class; log a structured warning with the correlation IDs; continue to completion\n  bookkeeping. Anything else (programming errors, failure to write the attempt record)\n  still propagates. Effort S, risk low. Pros: payment webhooks succeed when payments\n  succeed; one recovery channel (the existing notification retry procedure); alerts keep\n  their meaning. Cons: the rescued class list must be precise, and a test must prove a\n  non-mail error still propagates. Reuse: mail client's attempt record, dashboard, runbook.\n  Verification: unit tests for timeout → 200 + record asserted; provider error → 200;\n  unrelated error → propagates.\n- **B) Commit, then let the mail error propagate (as written, boundary pinned)** — Effort\n  S, risk medium. Pros: no new rescue code; Stripe's retry gives a free second attempt.\n  Cons: notification failures page as webhook failures; two retry channels for one send;\n  completion marker unset until mail succeeds; endpoint health coupled to mail provider.\n  Reuse: same. Verification: test that a mail error yields 500 with the update committed.\n- **C) Update and send inside one transaction, propagate** — Effort S, risk high. Pros:\n  strict all-or-nothing on paper. Cons: paid users show unpaid during a mail outage;\n  attempt record references an uncommitted payment, contradicting the runbook at L49-51\n  and L66-69. Not viable.\n\nRecommendation: A. Completeness: A=9/10, B=6/10, C=2/10.\n\n**D3 resolved → A.** Amendment applied to Webhook fan-out section below.\n\n### D4 — automated tests: options (pending)\n\nPLAN.md L79-80 concedes the staging replay is manual verification, not regression\ncoverage, and L118-119 relies on \"the existing integration suite catching regressions\".\nThat suite exercises the *prior* handler: the new class is behind a flag that the suite\ndoes not flip, so as written the new money-touching code ships with zero automated\ncoverage. D2 and D3 each approved behavior that only a test can hold in place (a quote in\nan ID; a `MailTimeout` yielding 200 with the update committed).\n\n| Commitment | Source/approval or pending | Current | A) Handler unit suite + 1 dispatcher integration test | B) Integration tests only | C) None (as written) |\n|---|---|---|---|---|---|\n| Coverage of new class | pending | none | every branch listed below | happy path + mail failure through the dispatcher | none |\n| D2 regressions (quote / non-ASCII ID) | approved with D2 | n/a | yes | no | no |\n| D3 regressions (timeout→200, provider error→200, other error→propagates, update committed before send) | approved with D3 | n/a | yes | partial (mail failure only) | no |\n| Retained semantics (unknown user→200; missing address→skip; 0 orders→1 receipt; N orders→1 receipt) | contracts L43-51, L81-84 | manual replay | yes | no | no |\n| Flag on/off routing through `WebhookDispatcher` (D1) | approved with D1 | manual replay | 1 integration test each way | yes | no |\n| Manual staging replay checklist (L76-78) | retained | required | still required | still required | still required |\n\n- **A) Handler unit suite plus one dispatcher integration test** — unit tests on\n  `Webhooks::StripePaymentWebhookHandler` with the DB and mail clients doubled: happy\n  path; unknown user → 200, no update, no mail; ID with `'` and a non-ASCII ID resolve\n  the right user; nil/empty address → skip, payment still updated; `MailTimeout` → update\n  committed, warning logged, 200; provider error → same; unrelated exception → propagates,\n  nothing rescued; zero orders → one receipt with empty summary; N orders → one receipt.\n  One integration test dispatches a signed `payment_intent.succeeded` through the real\n  `WebhookDispatcher` with the flag on and asserts the new handler ran; one with the flag\n  off asserts the prior handler ran. Effort M (human ~1 day / CC ~20 min), risk low.\n  Reuse: existing integration harness and client test doubles. Cons: adds a test file\n  and doubles to maintain.\n- **B) Integration tests only** — two end-to-end tests through the dispatcher (happy path,\n  mail failure). Effort S, risk medium. Pros: exercises real wiring. Cons: cannot easily\n  inject a quote-bearing ID or a non-mail exception; D2/D3 regressions unguarded.\n- **C) None (as written)** — Effort 0, risk high. Pros: none. Cons: the approved D2/D3\n  behaviors can regress silently; the \"existing suite\" covers the old handler, not this one.\n\nRecommendation: A. Completeness: A=10/10, B=6/10, C=1/10.\n\n## NOT in scope (HOLD SCOPE)\n\n- Replacing signature verification, dedup, locking, ownership guard, recipient policy,\n  mail idempotency, runbooks, dashboards, or the feature-flag rollout path. All retained.\n- Moving email to a background queue: the retained contracts already provide provider-side\n  idempotency and a durable retry record, so this is not required to meet the invariants.\n  Flagged as separate future scope, not as a shortcut.\n- Handling other Stripe event types.\n\n## Post-review action (outside plan mode)\n\n- D0 (answered \"Add routing rules\"): append the gstack \"## Skill routing\" section to\n  `CLAUDE.md` and commit `chore: add gstack skill routing rules to CLAUDE.md` after this\n  review exits plan mode. Not done during the review because plan mode forbids the edit.\n",
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              "question": "D3 (ledger R1) — Should the new handler register with the existing WebhookDispatcher, or bypass it as the plan says?\nProject/branch/task: PLAN.md on `main`, Architecture section; the plan itself lists this as the one open choice.\nELI10: Today every Stripe event enters through one front door (the dispatcher) which hands it to a handler. The plan builds a second door straight to the new class so its namespace stays clean. But the clean namespace already comes from the approved class name `Webhooks::StripePaymentWebhookHandler`; a second door just means two routing paths to keep in sync, and the feature flag and handler-identity trace may need re-wiring for the new door. Caveat: no source is in this repo, so what the dispatcher provides is inferred from the contracts, not read.\nStakes if we pick wrong: B risks losing flag-based rollback or trace attribution if they live in the dispatcher; A risks a small amount of coupling if the dispatcher turns out to be library-shaped. Both reversible; B is more work to unwind later.\nRecommendation: A because namespace separation is a naming decision, not a routing decision, and one entry path is what the 12-month ideal looks like.\nCompleteness: A=9/10, B=6/10, C=5/10\nNet: one door with an app-owned handler behind it vs. two doors to maintain.",
              "header": "R1 Arch",
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                  "label": "A) Register with dispatcher (recommended)",
                  "description": "✅ Feature flag, rollback and handler-identity trace are inherited, nothing to re-plumb\n✅ Future event types follow the same pattern instead of each adding a door\n❌ Requires reading the dispatcher API first; slight coupling if it is library-shaped"
                },
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                  "label": "B) Bypass dispatcher (as planned)",
                  "description": "✅ Zero coupling to the dispatcher; class is fully app-owned end to end\n✅ No dispatcher changes, so the dispatcher's own tests are untouched\n❌ Two routing paths; flag selection and trace attribution may need re-implementing for the new path"
                },
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                  "label": "C) No new class, extend dispatcher",
                  "description": "✅ Smallest possible diff; nothing new to wire\n✅ Reuses every dispatcher convention automatically\n❌ Drops the already-approved app-owned class name and grows the dispatcher into a catch-all"
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            "D3 (ledger R1) — Should the new handler register with the existing WebhookDispatcher, or bypass it as the plan says?\nProject/branch/task: PLAN.md on `main`, Architecture section; the plan itself lists this as the one open choice.\nELI10: Today every Stripe event enters through one front door (the dispatcher) which hands it to a handler. The plan builds a second door straight to the new class so its namespace stays clean. But the clean namespace already comes from the approved class name `Webhooks::StripePaymentWebhookHandler`; a second door just means two routing paths to keep in sync, and the feature flag and handler-identity trace may need re-wiring for the new door. Caveat: no source is in this repo, so what the dispatcher provides is inferred from the contracts, not read.\nStakes if we pick wrong: B risks losing flag-based rollback or trace attribution if they live in the dispatcher; A risks a small amount of coupling if the dispatcher turns out to be library-shaped. Both reversible; B is more work to unwind later.\nRecommendation: A because namespace separation is a naming decision, not a routing decision, and one entry path is what the 12-month ideal looks like.\nCompleteness: A=9/10, B=6/10, C=5/10\nNet: one door with an app-owned handler behind it vs. two doors to maintain.": "A) Register with dispatcher (recommended)"
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        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-mp0k822s/gstack-paid-shard-Fo9CFs/tmp/gstack-e2e-plan-ceo-TlEymL/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module — we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
        "savedPlan": "# CEO Review (HOLD SCOPE): Payment Processing Integration\n\nReviewed plan: `PLAN.md` @ 804ebbb on `main`. Mode: HOLD SCOPE (explicit user choice).\nSession: 1376639-1789505193-de69689b. Date: 2026-09-15.\nBase branch: `main` (no remote; git-native fallback).\n\n## Context\n\nThe approved motivation is to move Stripe payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while keeping the existing\npayment and receipt behavior byte-for-byte for the customer. The plan body under\nreview (Architecture / Database access / Webhook fan-out / Tests / Performance)\nis five paragraphs; the \"Existing contracts retained\" section is the constraint\nset every finding below is checked against. No application source is present in\nthis repository (two files: `PLAN.md`, `CLAUDE.md`), so every statement about\nexisting code is taken from the contracts section and marked as such.\n\n## Pre-review system audit\n\n- History: single commit `804ebbb Seed review plan`. No stash, no open branches, no remote, no TODO/FIXME markers, no TODOS.md, no design doc, no CEO handoff note. `/office-hours` skipped per user instruction.\n- In flight: nothing.\n- Retrospective check: no prior review cycles on this branch.\n- Frontend/UI scope: none. The change is a server-side webhook handler; the only user-visible surface is the receipt email (unchanged contract). Section 11 will be a no-UI skip.\n- Prior learnings: store empty. Cross-project learnings enabled this session (D2).\n- Brain context: all four digests cold.\n- Landscape (WebSearch; Aside not installed):\n  - Layer 1 (tried and true): verify signature on raw body, dedup by `event.id`, do business work and the dedup marker in one transaction, respond 2xx inside the deadline, treat every event as at-least-once.\n  - Layer 2 (current guides): push slow legs (email, ERP sync) to a background job; Stripe retries with backoff for up to 72h so a persistent 5xx keeps re-delivering the same event.\n  - Layer 3 (first principles): this plan already has signature, dedup, lock, ownership and lookup guards at the ingress. The residual risk is entirely inside the handler body: how it queries, what it does when the receipt fails after the payment commits, and how many round trips it makes under a 2-second DB budget.\n  - Sources: [Stripe docs: webhooks](https://docs.stripe.com/webhooks), [HookRay best practices 2026](https://hookray.com/blog/stripe-webhook-best-practices-2026), [Hooklistener implementation guide](https://www.hooklistener.com/learn/stripe-webhooks-implementation), [The Idempotency Trap](https://dev.to/ameer-pk/the-idempotency-trap-architecting-resilient-stripe-webhooks-in-nodejs-4k91), [APIScout guide](https://apiscout.dev/guides/stripe-webhooks-complete-guide-2026).\n\n## Post-plan-mode action (approved D1)\n\nAppend the gstack skill-routing section to `CLAUDE.md` and commit\n(`chore: add gstack skill routing rules to CLAUDE.md`). Blocked by plan mode\nduring this review; do it once plan mode exits. Not part of the reviewed plan.\n\n## Step 0A. Premise challenge (observations, not approvals)\n\n1. Right problem? Yes for the motivation: owning payment orchestration in app\n   code is a legitimate maintainability goal. But the motivation is a\n   behavior-preserving port, and four of the five plan paragraphs change\n   behavior in ways the motivation does not ask for: an injectable lookup, an\n   unhandled receipt failure that turns a committed payment into a 500, a\n   per-order query loop under a 2-second budget, and zero automated coverage\n   for a payments code path. Simpler framing: \"port the handler, keep every\n   contract, prove it with tests.\"\n2. Outcome: the customer should notice nothing. `payment_status=paid`, one\n   receipt per PaymentIntent, same latency. The plan only reaches that if the\n   handler body preserves the contracts; today's text does not.\n3. Do nothing: the prior handler keeps working. The pain (library coupling,\n   ownership) is real but not urgent. That makes the port a two-way door. The\n   raw SQL fragment is the one one-way door in the plan: a breach or a dropped\n   table is not reversible by flipping the feature flag.\n\n## Step 0B. Existing code leverage (from contracts; no source inspected)\n\n| Sub-problem | Existing code (per contracts) | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware, raw body | yes (unchanged) |\n| Event type filtering | ingress forwards only `payment_intent.succeeded` | yes |\n| user_id extraction | payload adapter → `request.params.userId` (opaque TEXT, unsanitized) | yes, but feeds it to raw SQL |\n| Missing/empty user_id | adapter acks 200 + warning | yes |\n| PI ↔ user ownership | ingress ownership guard | yes |\n| Dedup + serialization | event-ID guard + per-user lock, completion after commit | yes |\n| Unknown/deleted user | lookup-result guard, 200 + log | yes |\n| Nil/empty email | recipient-policy helper → skipped_missing_address | yes |\n| Send failure/timeout | mail client: 1s deadline, durable attempt record, rethrow | yes, but handler does nothing with the rethrow |\n| Duplicate sends | provider idempotency key from PI ID | yes |\n| Tracing/alerts/runbooks | DB + mail clients, ingress wrapper, dashboards | yes |\n| Rollout | feature flag, tested rollback, staging replay checklist | yes (manual only) |\n| Request routing | `WebhookDispatcher` (role vs. ingress guards: UNKNOWN, no source) | no, bypassed |\n\nRebuilding check: the only thing the plan rebuilds is whatever `WebhookDispatcher`\ndoes. The contracts place all guards in the ingress wrapper, so bypassing the\ndispatcher may lose nothing or may lose routing/attribution conventions. Unknown\nwithout source; carried into R1.\n\n## Step 0C. Dream state\n\n```\n  CURRENT STATE                    THIS PLAN                        12-MONTH IDEAL\n  Library-adapter handler          + Webhooks::StripePayment-        App-owned handlers per event\n  owns orchestration; app          WebhookHandler (app-owned)        type, all registered through\n  code has no seam to test         - dispatcher bypassed             one dispatcher; every handler\n  or evolve payment flow;          - raw SQL lookup                  parameterized, batched, covered\n  guards live in ingress.          - inline receipt, rethrow         by unit + integration tests;\n                                   - per-order N+1                   receipt failures never surface\n                                   - no tests                        as webhook failures.\n                        ---->                              ---->\n```\n\nDirection: the class itself moves toward the ideal. The bypass, raw SQL, N+1 and\nno-tests paragraphs move away from it and would each need to be undone later.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 Architecture (user) | Contracts: guards live in ingress; \"whether to add a separate implementation or reuse WebhookDispatcher remains open\"; class name `Webhooks::StripePaymentWebhookHandler` settled. Dispatcher's role: unknown (no source). | New class, bypasses `WebhookDispatcher` | pending | unresolved | |\n| R2 Lookup query (user) | Contracts: user_id is opaque TEXT incl. punctuation/Unicode, forwarded unchanged, \"a valid signature does not make it safe for SQL\". Plan: raw SQL fragment. Concrete contradiction. | `request.params.userId` interpolated into raw SQL | pending | unresolved | |\n| R3 Receipt failure after commit (user) | Contracts: mail client rethrows MailTimeout/send errors after durably recording the attempt; dedup completion recorded only after DB commit; runbook says never replay the payment blindly. Plan: no handling on email leg → exception → ingress 500 → Stripe re-delivers a committed payment. Concrete contradiction. | rethrow inline, HTTP 500 | pending | unresolved | |\n| R4 Order loading (user) | Contracts: DB + ingress deadlines bound combined work to 2s; receipt needs an order summary (data load only). Plan: one query per order. Feasibility risk for high-order users. | per-order loop | pending | unresolved | |\n| R5 Automated tests (user) | Contracts: rollout checklist is manual, \"no new automated tests are planned\". Plan: none; rely on existing integration suite (coverage of new class: unknown). Prime Directive 2 requires named-error test coverage. | none | pending | unresolved | |\n\n## Step 0D. Alternatives\n\n### R1 Architecture: where does the new handler plug in?\n\nUnknown, stated plainly: no source is available, so what `WebhookDispatcher`\nactually provides (route table, handler-identity tagging for the outcome trace,\nflag-based handler selection) is inferred, not read. The contracts put\nsignature/dedup/lock/ownership guards in the ingress wrapper, not the dispatcher.\n\n| Option | Summary | Effort | Risk | Pros | Cons | Reuse | Verification |\n|---|---|---|---|---|---|---|---|\n| A. Register with dispatcher | Add `Webhooks::StripePaymentWebhookHandler`; the existing `WebhookDispatcher` routes `payment_intent.succeeded` to it behind the existing handler flag. | S (human ~½ day / CC ~10 min) | low | One entry path; flag/attribution conventions inherited; namespace separation still achieved by the class name | Must read dispatcher API first; if dispatcher is library-shaped, slight coupling remains | dispatcher, flag, trace | dispatcher routing test + staging replay |\n| B. Bypass dispatcher (as planned) | New class wired directly from ingress, dispatcher untouched. | S–M (human ~1 day / CC ~20 min) | medium | Zero dispatcher coupling; class fully app-owned | Two routing paths to keep in sync; handler-identity trace and flag selection may need re-plumbing; future event types repeat the pattern | flag, trace (if re-plumbed) | new routing test + staging replay |\n| C. No new class | Implement the logic inside `WebhookDispatcher`. | S (human ~½ day / CC ~10 min) | low–medium | Smallest diff | Contradicts approved app-owned naming; dispatcher grows into a god object as event types are added | dispatcher | staging replay |\n\n```\nCommitment                       | Source/approval          | Current  | A         | B         | C\nSeparate class named             | approved (contracts)     | yes      | yes       | yes       | no\n  Webhooks::StripePaymentWebhookHandler\nDispatcher stays the single      | pending (R1)             | n/a      | yes       | no        | yes\n  route for Stripe events\nIngress guards unchanged         | contract                 | yes      | yes       | yes       | yes\nHandler flag + rollback path     | contract                 | yes      | inherited | re-plumb? | inherited\nHandler identity in trace        | contract                 | yes      | inherited | re-plumb? | inherited\nLookup / email / orders / tests  | pending (R2–R5)          | —        | pending   | pending   | pending\n```\n\nGrid read: one commitment differs (dispatcher as single route); C also drops the\napproved class name, which is why it is listed but not recommended. R2–R5 stay\npending under every option. Recommendation: A.\n\n## Step 0E. Mode\n\nHOLD SCOPE, explicit user instruction (\"review this plan thoroughly in HOLD SCOPE\nmode\"). Not asked again. Route: 0D → 0E handoff → 0G HOLD checks → 0I → Sections 1–11.\n",
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            "question": "D0 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: fixture repo on `main`, about to run /plan-ceo-review on PLAN.md.\nELI10: gstack skills work best when CLAUDE.md tells the assistant which skill to run for which kind of request (bugs → /investigate, strategy → /plan-ceo-review, etc.). This is a one-time per-project prompt. Note: plan mode is active, so if you say yes the append + commit happens after this review, once edits are allowed.\nStakes if we pick wrong: without rules you invoke skills by hand; with them, the assistant routes automatically. Low stakes, reversible either way.\nRecommendation: A because routing rules make future sessions pick the right skill without you remembering names.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience of auto-routing vs keeping CLAUDE.md untouched.",
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                "description": "✅ Future requests auto-route to the right gstack skill without naming it\n✅ One short appended section; committed as a chore commit after plan mode ends\n❌ Adds a gstack-specific block to a fixture repo's CLAUDE.md that you may not want"
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                "description": "✅ CLAUDE.md stays exactly as it is; nothing extra committed\n✅ Can re-enable later with gstack-config set routing_declined false\n❌ You have to remember and type skill names yourself each time"
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          "D0 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: fixture repo on `main`, about to run /plan-ceo-review on PLAN.md.\nELI10: gstack skills work best when CLAUDE.md tells the assistant which skill to run for which kind of request (bugs → /investigate, strategy → /plan-ceo-review, etc.). This is a one-time per-project prompt. Note: plan mode is active, so if you say yes the append + commit happens after this review, once edits are allowed.\nStakes if we pick wrong: without rules you invoke skills by hand; with them, the assistant routes automatically. Low stakes, reversible either way.\nRecommendation: A because routing rules make future sessions pick the right skill without you remembering names.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience of auto-routing vs keeping CLAUDE.md untouched.": "Add routing rules (recommended)"
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        "sessionId": "b55e941a-0962-4e4f-8eba-d23c5bc66d46",
        "toolUseId": "toolu_01D2Chyz7aogFsMuo8YuC7D5",
        "questions": [
          {
            "question": "D1 — Route the new handler through `WebhookDispatcher` or bypass it?\nProject/branch/task: Stripe payment handler refactor on `main`; ledger row D1.\nELI10: Today one shared \"dispatcher\" decides which handler gets each Stripe event. The plan wants the new `Webhooks::StripePaymentWebhookHandler` to skip that and get its own routing path, for \"clean namespace separation\". But the separation already comes from the approved class name. Skipping the dispatcher means a second routing path, and the existing feature flag has to be re-wired to it.\nStakes if we pick wrong: a bypass leaves two ways events reach handlers; the next event type forks the same way, and rollback wiring lives in two places.\nRecommendation: A because one dispatch path with the existing flag is less code, less to test, and keeps rollback where it is.\nCompleteness: A=10/10, B=7/10, C=5/10\nNet: DRY routing with a small dispatcher touch vs. an untouched dispatcher and a duplicated path.",
            "header": "Routing",
            "multiSelect": false,
            "options": [
              {
                "label": "A) Register with WebhookDispatcher (recommended)",
                "description": "✅ One routing path; the existing feature flag and handler-identity tracing stay unchanged\n✅ Namespace separation still delivered by the approved Webhooks:: class name\n❌ If the dispatcher's registration API doesn't fit, a small change to shared code is needed (S)"
              },
              {
                "label": "B) Bypass the dispatcher as planned",
                "description": "✅ No edits to shared dispatcher code at all\n✅ Handler is fully self-contained end to end\n❌ Second dispatch path plus duplicated flag wiring to maintain; future event types inherit the fork"
              },
              {
                "label": "C) No new class; logic in dispatcher",
                "description": "✅ Fewest files touched\n✅ Zero new classes to name or register\n❌ Contradicts the approved motivation (app-owned handler) and the settled class name"
              }
            ]
          }
        ],
        "answered": true,
        "failed": false,
        "answers": {
          "D1 — Route the new handler through `WebhookDispatcher` or bypass it?\nProject/branch/task: Stripe payment handler refactor on `main`; ledger row D1.\nELI10: Today one shared \"dispatcher\" decides which handler gets each Stripe event. The plan wants the new `Webhooks::StripePaymentWebhookHandler` to skip that and get its own routing path, for \"clean namespace separation\". But the separation already comes from the approved class name. Skipping the dispatcher means a second routing path, and the existing feature flag has to be re-wired to it.\nStakes if we pick wrong: a bypass leaves two ways events reach handlers; the next event type forks the same way, and rollback wiring lives in two places.\nRecommendation: A because one dispatch path with the existing flag is less code, less to test, and keeps rollback where it is.\nCompleteness: A=10/10, B=7/10, C=5/10\nNet: DRY routing with a small dispatcher touch vs. an untouched dispatcher and a duplicated path.": "A) Register with WebhookDispatcher (recommended)"
        },
        "unansweredQuestionIndices": [],
        "answeredAt": "2026-09-15T21:40:33.113Z"
      }
    ],
    "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-7vokcmz_/gstack-paid-shard-BJcIXt/tmp/gstack-e2e-plan-ceo-fyZ3pG/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module — we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
    "savedPlan": "# Plan: Payment Processing Integration (CEO review working plan)\n\nReview: /plan-ceo-review, HOLD SCOPE (user-selected), 2026-09-15, branch `main`.\nSource plan: `PLAN.md` (byte-identical to the plan embedded in CLAUDE.md).\nRepo state: two-file fixture, no source code, no TODOS.md, no design doc, no handoff note, no stashes, single commit `863bf39`.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (user) | Architecture: separate `Webhooks::StripePaymentWebhookHandler` bypassing `WebhookDispatcher`. Evidence: PLAN.md \"Architecture\"; contracts say the name is settled, separate-vs-reuse is open, dispatcher remains available. | prior library-adapter handler, routed via shared dispatcher (inferred; no code in repo) | see 0D comparison | unresolved | |\n\n\n### D1. Routing: bypass or register with `WebhookDispatcher`\n\nCommitment grid:\n\n```text\nCommitment                         | Source/approval or pending | Current            | A register       | B bypass          | C fold into dispatcher\nHandler class name                 | approved (contracts)       | n/a                | Webhooks::...    | Webhooks::...     | none (no class)\nNamespace separation               | approved (motivation)      | library namespace  | via class name   | via class name    | lost\nRouting path                       | pending (D1)               | dispatcher         | dispatcher       | new parallel path | dispatcher\nFeature flag location              | approved (contracts)       | existing flag      | unchanged        | must be re-wired  | unchanged\nGuards (sig/dedup/lock/ownership)  | approved (contracts)       | ingress            | unchanged        | unchanged         | unchanged\n```\n\n- **A) Register the handler with `WebhookDispatcher`** (S, low risk). Add the\n  new class, register it for `payment_intent.succeeded` behind the existing\n  flag. Pros: one routing path, flag and tracing stay where they are, no new\n  dispatch code to test. Cons: the dispatcher's registration API must fit; if\n  it does not, a small dispatcher change is in scope. Reuse: high. Verification:\n  routing test that the flag selects the new class.\n- **B) Bypass the dispatcher as planned** (M, medium risk). Pros: no touch to\n  shared dispatcher. Cons: second routing path to maintain, flag wiring\n  duplicated, future event types face the same fork, DRY violation. Reuse: low.\n- **C) No new class; put the logic in the dispatcher** (M, medium risk). Pros:\n  fewest files. Cons: contradicts the approved motivation (orchestration in an\n  application-owned handler, not a shared module) and the settled name.\n\n",
    "provenance": {
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      "requestAt": "2026-09-15T21:40:32.953Z",
      "originalReportSha256": "411a2b19297408b0e4c56df9a277c31ae9e5ceb5e42be7c7cf15dd380599ff8c",
      "excerptSha256": "a3793386f41d3496ae23251346d4e07f4c6c433304044c3fa81bc64cfa43a18b",
      "excerptPolicy": "Verbatim document header/source, complete ledger header and current D1 row, and the complete D1 comparison with all three offered alternatives. Unrelated later decisions and other phase narratives omitted; full public report remains in immutable capture.",
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    "source": "6bd82935896f84464d900e1a9b2e32c1e06e4e8a",
    "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-khuerz1n/gstack-paid-shard-7b1Upv/tmp/gstack-e2e-plan-ceo-jTqcKd/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module — we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
    "savedPlan": "# Plan: Payment Processing Integration (CEO review working plan)\n\nMode: HOLD SCOPE (explicit user choice). Reviewer: /plan-ceo-review, 2026-09-15, branch `main`.\nSource plan: `PLAN.md` at repo root. This file is the working plan; PLAN.md is unchanged.\n\n## Context\n\nMove payment orchestration for `payment_intent.succeeded` out of the prior\nlibrary-adapter handler into application-owned code, retaining existing payment\nand receipt product behavior. The approved handler name, if a separate class is\nkept, is `Webhooks::StripePaymentWebhookHandler`. The new handler runs inside\nunchanged ingress guards: signature verification on the raw body, event-type\nfilter, missing-user_id acknowledgement, PaymentIntent ownership guard, event-ID\ndedup, per-user lock, unknown/deleted-user guard, feature flag with tested\nrollback. Those are inherited, not rebuilt.\n\n## Existing contracts retained (verbatim from PLAN.md, authoritative)\n\nSee `PLAN.md` lines 7-103. Key facts this review leans on:\n- `request.params.userId` is an opaque, unsanitized, nonempty TEXT string from\n  Stripe metadata. A valid signature does not make it SQL-safe (PLAN.md:21-26).\n- User update is idempotent by value: `payment_status=paid` + payment intent ID\n  (PLAN.md:40-42). Dedup marker is written only after the DB transaction commits\n  (PLAN.md:70-73).\n- Mail client: 1s deadline, raises `MailTimeout`, no inline retries, durably\n  records failed attempts for the notification retry procedure, provider-side\n  idempotency key = PaymentIntent ID, rethrows exceptions to the handler\n  (PLAN.md:52-53, 85-97). Nil/empty address is `skipped_missing_address`, handled\n  by the retained recipient-policy helper, never reaches the mail client.\n- DB + ingress deadlines bound combined work to 2s inside the 10s webhook deadline\n  (PLAN.md:94-95).\n- One receipt per PaymentIntent with an order summary; zero orders still sends one\n  receipt with an empty summary (PLAN.md:81-84).\n- Rollout is manual: staging replay + verification checklist; no automated handler\n  tests planned (PLAN.md:74-80).\n\n## Step 0 observations (evidence only; nothing here approves a change)\n\n### 0A Premise challenge\n1. Right problem? Yes. Owning the orchestration in app code is a sound\n   motivation and is already approved. The plan is not solving a proxy.\n2. Outcome: same payment + receipt behavior, now in code the team owns and can\n   test. The plan reaches it directly, but the \"Tests: none\" section means the\n   ownership gain (testability) is not cashed in.\n3. Do nothing: pain is real but not urgent; the prior handler works. This makes\n   the change a two-way door (feature flag + tested rollback), so speed is fine\n   on architecture, but the SQL and deadline items below are correctness, not\n   taste, and do not get the \"70% information\" discount.\n\n### 0B Existing code leverage (from the contracts; no code in this fixture)\n| Sub-problem | Existing code | Plan's stance |\n|---|---|---|\n| Signature, dedup, lock, ownership guard | ingress middleware / event guard | inherited, unchanged |\n| Handler routing | `WebhookDispatcher` (\"remains available\") | bypassed for \"namespace separation\" |\n| User lookup | existing lookup with lookup-result guard | rebuilt as raw SQL fragment |\n| Missing email address | recipient-policy helper | retained |\n| Email send, idempotency key, failure record | shared mail client | reused; exceptions unhandled |\n| Observability | ingress wrapper logs/alerts, DB+mail outcome traces, handler identity | inherited |\n| Rollout | feature flag, rollback, manual checklist | reused |\n\nRebuild flag: the only thing the plan rebuilds rather than reuses is dispatch\n(bypass `WebhookDispatcher`) and the lookup query (raw SQL). The stated reason\nfor the bypass, \"clean namespace separation\", is already delivered by the\nsettled class name `Webhooks::StripePaymentWebhookHandler`; the namespace does\nnot depend on routing. Unknown: whether any of the inherited guards are wired\nthrough `WebhookDispatcher` rather than the ingress middleware. PLAN.md:38-39\nsays the handler runs inside them either way; treat as true but unverified here.\n\n### 0C Dream state\n```\n  CURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\n  Library-adapter handler owns     App-owned handler behind the    App-owned handlers for every\n  payment orchestration; guards    existing flag; same product     Stripe event type, each a small\n  live in ingress; manual replay   behavior; raw SQL lookup;       class registered with the\n  is the only verification.  --->  inline email, unhandled;  --->  dispatcher, parameterized\n                                   N+1 order loads; zero           lookups, mail failures rescued\n                                   automated tests.                and recorded, batch loads,\n                                                                   unit + integration tests per\n                                                                   handler, prior handler deleted.\n```\nDirection: the plan moves toward the ideal on ownership and away from it on\nrouting (a second dispatch path), data access (raw SQL), and testing (none).\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 Architecture (user) | PLAN.md:100-108: name settled; \"separate implementation or reuse WebhookDispatcher remains open\" | New class bypasses `WebhookDispatcher` | Register `Webhooks::StripePaymentWebhookHandler` with `WebhookDispatcher` instead of bypassing | unresolved | pending |\n| D2 Lookup query (user) | PLAN.md:21-26, 110-112: adapter does not sanitize; user IDs are arbitrary TEXT; lookup is a raw SQL fragment | `request.params.userId` interpolated into raw SQL | Parameterized query / bound value; no format validation (contract forbids it) | unresolved | pending |\n| D3 Email leg (user) | PLAN.md:52-53, 60-73, 85-97, 114-116: mail client rethrows; DB exceptions -> 500 -> Stripe retry; dedup marker written after commit | Inline send, no rescue; `MailTimeout`/mail errors propagate to ingress as HTTP 500 | Rescue named mail exceptions after the committed update, log correlated, return 200; rely on existing retry record + runbook | unresolved | pending |\n| D4 Order loading (user) | PLAN.md:81-84, 94-95, 121-123: one receipt, order summary is data loading; DB+ingress budget 2s | Per-order query in a loop | Single batch query for the user's orders | unresolved | pending |\n| D5 Tests (user) | PLAN.md:76-80, 118-119: manual staging replay only; existing integration suite | No new automated tests | Handler unit tests + one integration test covering happy/nil/empty/error paths | unresolved | pending |\n\nRows are independently selectable. D2 and D3 each carry their own regression\ntests if approved (0D test table: change + required regressions travel together);\nD5 covers tests for behavior the plan already commits to regardless of D2-D4.\n\n## 0D comparisons\n\n### D1 Architecture: bypass vs register with `WebhookDispatcher`\n\n```\nCommitment              | Source            | Current (bypass) | A register | B bypass | C register + adapter shim\nClass name              | settled PLAN:100  | app namespace    | same       | same     | same\nRouting path            | pending PLAN:103  | new direct path  | dispatcher | direct   | dispatcher via thin shim\nInherited guards        | PLAN:38-39        | assumed intact   | intact     | assumed  | intact\nHandler identity trace  | PLAN:98-99        | must be set      | dispatcher | manual   | dispatcher\nSecond dispatch path    |                   | yes              | no         | yes      | no\n```\n\n**A) Register with `WebhookDispatcher`** (S effort, low risk). The new class is\na dispatcher-registered handler for `payment_intent.succeeded`. Pros: one\nrouting path; guards and handler-identity tracing stay exactly where they are;\nthe flag swaps which registered handler is active. Cons: must fit the\ndispatcher's handler interface; if the dispatcher's contract is awkward, that\nawkwardness is inherited. Reuse: full. Verification: the existing dispatcher\ntests plus the handler's own.\n\n**B) Bypass, as written** (S effort, medium risk). Pros: no coupling to the\ndispatcher interface; fewest touched files if the dispatcher is hard to change.\nCons: two ways webhooks reach handlers; every future inherited-guard change\nmust be verified against both paths; \"namespace separation\" is not a reason,\nthe class name already gives it. Reuse: partial. Verification: manual replay\nonly, unless D5 adds tests.\n\n**C) Register through a thin adapter shim** (M effort, low-medium risk). Only\nworth it if the dispatcher interface does not fit the new handler. Pros: one\nrouting path, handler stays library-agnostic. Cons: one more class for a\none-handler problem; premature abstraction until a second handler exists.\n\nRecommendation: A. The bypass's stated motive is already satisfied by naming;\nthe remaining effect of bypassing is a second routing path to keep in sync.\n",
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            "question": "D1 — Should the new handler register with the existing WebhookDispatcher or bypass it?\nProject/branch/task: main, CEO review of the Stripe payment handler plan (HOLD SCOPE).\nELI10: Webhooks arrive at one front door (the ingress), then get routed to a handler. Today routing goes through WebhookDispatcher. The plan adds a second, direct route for the new handler because it wants a clean namespace, but the class name Webhooks::StripePaymentWebhookHandler already gives you that namespace no matter how it is routed. The real question is whether you want one routing path or two.\nStakes if we pick wrong: two routing paths means every future change to the inherited guards or handler-identity tracing must be checked twice; miss one and a payment event can skip a guard silently.\nRecommendation: A because the bypass's only stated reason (namespace separation) is already delivered by the settled class name, leaving only cost.\nNote: options differ in kind, not coverage — no completeness score.\nNet: one routing path you already trust vs. a parallel path whose justification no longer applies.",
            "header": "D1 Routing",
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                "label": "Register with WebhookDispatcher (recommended)",
                "description": "✅ One routing path; inherited guards and the handler-identity trace stay exactly where they are today\n✅ The feature flag just swaps which registered handler is active; smallest conceptual change (human: ~half day / CC: ~10 min)\n❌ Must conform to the dispatcher's handler interface; if that interface is awkward you inherit the awkwardness"
              },
              {
                "label": "Bypass WebhookDispatcher (as written)",
                "description": "✅ No coupling to the dispatcher's interface; fewest touched files if the dispatcher is hard to modify\n✅ Handler can be shaped freely around the new orchestration code\n❌ A second dispatch path to keep in sync forever; guard and tracing changes must be verified on both routes"
              },
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                "label": "Register via a thin adapter shim",
                "description": "✅ One routing path while keeping the handler free of the dispatcher's interface\n✅ Makes a later migration of other event types mechanical\n❌ An extra class for a one-handler problem today; premature abstraction until a second handler exists (human: ~1 day / CC: ~20 min)"
              }
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        "failed": false,
        "answers": {
          "D1 — Should the new handler register with the existing WebhookDispatcher or bypass it?\nProject/branch/task: main, CEO review of the Stripe payment handler plan (HOLD SCOPE).\nELI10: Webhooks arrive at one front door (the ingress), then get routed to a handler. Today routing goes through WebhookDispatcher. The plan adds a second, direct route for the new handler because it wants a clean namespace, but the class name Webhooks::StripePaymentWebhookHandler already gives you that namespace no matter how it is routed. The real question is whether you want one routing path or two.\nStakes if we pick wrong: two routing paths means every future change to the inherited guards or handler-identity tracing must be checked twice; miss one and a payment event can skip a guard silently.\nRecommendation: A because the bypass's only stated reason (namespace separation) is already delivered by the settled class name, leaving only cost.\nNote: options differ in kind, not coverage — no completeness score.\nNet: one routing path you already trust vs. a parallel path whose justification no longer applies.": "Register with WebhookDispatcher (recommended)"
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        "answeredAt": "2026-09-15T22:25:26.621Z"
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    "originalError": "Unsupported current CEO decision; cannot exclude it from the 4–7 count",
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        "attempt": "plan-ceo-review-1789521167376-0qtm1H",
        "case": "distinct5",
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-8i30e6qg/gstack-paid-shard-hsb4Ye/tmp/gstack-e2e-plan-ceo-0JDnus/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module — we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
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              "questions": [
                {
                  "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on `main`, starting the HOLD SCOPE CEO review of PLAN.md.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs → /investigate, scope → /plan-ceo-review, etc.). This is a one-time setup prompt. Note: we are in plan mode, so if you pick A the CLAUDE.md edit and commit happen after this review exits plan mode, not now.\nStakes if we pick wrong: without routing, skills only run when you invoke them by name; with it, a small CLAUDE.md section gets committed to the repo.\nRecommendation: A because routing rules are cheap and make the review pipeline discoverable for anyone using this repo.\nNote: options differ in kind, not coverage — no completeness score.\nNet: a committed 15-line CLAUDE.md section vs. invoking skills manually forever.",
                  "header": "Routing",
                  "multiSelect": false,
                  "options": [
                    {
                      "label": "Add routing rules (recommended)",
                      "description": "✅ Future requests auto-route to the right gstack skill without remembering names\n✅ One-time setup, applied after plan mode exits, committed as a chore commit\n❌ Adds a section to the repo's CLAUDE.md that teammates will see and must keep"
                    },
                    {
                      "label": "No thanks, manual invocation",
                      "description": "✅ CLAUDE.md stays exactly as the fixture defines it, no extra commit\n✅ You keep full control over when skills run\n❌ You must type /skill-name every time; nothing suggests the right skill"
                    }
                  ]
                }
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              "answered": true,
              "failed": false,
              "answers": {
                "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on `main`, starting the HOLD SCOPE CEO review of PLAN.md.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs → /investigate, scope → /plan-ceo-review, etc.). This is a one-time setup prompt. Note: we are in plan mode, so if you pick A the CLAUDE.md edit and commit happen after this review exits plan mode, not now.\nStakes if we pick wrong: without routing, skills only run when you invoke them by name; with it, a small CLAUDE.md section gets committed to the repo.\nRecommendation: A because routing rules are cheap and make the review pipeline discoverable for anyone using this repo.\nNote: options differ in kind, not coverage — no completeness score.\nNet: a committed 15-line CLAUDE.md section vs. invoking skills manually forever.": "Add routing rules (recommended)"
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              "answeredAt": "2026-09-16T01:12:57.405Z"
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                {
                  "question": "D2 (ledger R1) — Should the new handler register through the existing `WebhookDispatcher` or bypass it?\nProject/branch/task: payment plan review on `main`, HOLD SCOPE.\nELI10: Today one module (the dispatcher) decides which handler runs for each Stripe event. The plan wires the new handler straight into the ingress instead, skipping that module, and gives \"clean namespace\" as the reason. But the namespace is already settled by the approved class name, so the real question is whether we want one routing path or two. The plan itself says this is still open.\nStakes if we pick wrong: two routing paths means rollout, rollback, and every future Stripe event handler have two precedents to reason about; or, if the dispatcher is a bad fit, we couple a fresh class to legacy plumbing.\nRecommendation: A because it keeps one routing mechanism, the flag flip becomes a dispatcher table change, and the next handler copies a single pattern.\nNote: options differ in kind, not coverage — no completeness score.\nNet: one routing path and a bit of coupling vs. zero coupling and a second path to maintain forever.",
                  "header": "R1 Routing",
                  "multiSelect": false,
                  "options": [
                    {
                      "label": "A) Register in WebhookDispatcher (recommended)",
                      "description": "✅ Single routing mechanism for every Stripe event type, flag flip is one table entry\n✅ Future handlers copy one pattern; rollback stays on the tested dispatcher path\n❌ New class must conform to the dispatcher's handler interface and its quirks"
                    },
                    {
                      "label": "B) Bypass the dispatcher (as written)",
                      "description": "✅ Zero coupling to dispatcher internals; the new class is fully self-contained\n✅ Matches the plan text exactly, no dispatcher edits needed\n❌ Two routing paths during rollout/rollback; \"clean namespace\" is already satisfied by the class name"
                    },
                    {
                      "label": "C) No new class, orchestrate inside the dispatcher",
                      "description": "✅ Smallest possible diff, no new file\n✅ Nothing to register or flag beyond the existing dispatcher switch\n❌ Contradicts the approved app-owned class name and the motivation to move logic out of shared plumbing"
                    }
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              "answered": true,
              "failed": false,
              "answers": {
                "D2 (ledger R1) — Should the new handler register through the existing `WebhookDispatcher` or bypass it?\nProject/branch/task: payment plan review on `main`, HOLD SCOPE.\nELI10: Today one module (the dispatcher) decides which handler runs for each Stripe event. The plan wires the new handler straight into the ingress instead, skipping that module, and gives \"clean namespace\" as the reason. But the namespace is already settled by the approved class name, so the real question is whether we want one routing path or two. The plan itself says this is still open.\nStakes if we pick wrong: two routing paths means rollout, rollback, and every future Stripe event handler have two precedents to reason about; or, if the dispatcher is a bad fit, we couple a fresh class to legacy plumbing.\nRecommendation: A because it keeps one routing mechanism, the flag flip becomes a dispatcher table change, and the next handler copies a single pattern.\nNote: options differ in kind, not coverage — no completeness score.\nNet: one routing path and a bit of coupling vs. zero coupling and a second path to maintain forever.": "A) Register in WebhookDispatcher (recommended)"
              },
              "unansweredQuestionIndices": [],
              "answeredAt": "2026-09-16T01:16:05.357Z"
            },
            "savedPlan": "# Working Plan: Payment Processing Integration (CEO review, HOLD SCOPE)\n\nSource plan: `PLAN.md` on `main` (commit 98f63fa). Review skill: /plan-ceo-review.\nStorage: this file is the requested working plan (user-specified path). Plan mode is\nactive; no code is edited during this review.\n\nPost-review action (approved in D1, deferred because plan mode forbids the edit now):\nappend gstack skill routing rules to `CLAUDE.md` and commit\n`chore: add gstack skill routing rules to CLAUDE.md`.\n\n## Context\n\nThe approved motivation: move Stripe `payment_intent.succeeded` orchestration out of\nthe prior library-adapter handler into application-owned code, keeping the existing\npayment and receipt behavior byte-for-byte from the user's point of view. The handler\nruns inside unchanged ingress guards (signature check, event-type filter, event-ID dedup,\nper-user lock, ownership guard, unknown-user guard). Everything in \"Existing contracts\nretained\" is treated as fixed and verified-by-plan-author; this review does not\nre-litigate it.\n\nThe plan as written has four sections that conflict with its own retained contracts:\n\n1. **Database access** interpolates `request.params.userId` (an opaque, unsanitized,\n   attacker-influenceable TEXT string from Stripe metadata) into a raw SQL fragment.\n   The plan itself states \"a valid signature does not make it safe for SQL.\"\n2. **Webhook fan-out** rethrows mail exceptions to the ingress wrapper, which returns\n   HTTP 500 and makes Stripe replay a committed payment, while the runbook says\n   \"never replay the payment blindly\" and the alert for \"failed webhook processing\"\n   cannot distinguish a notification outage from a payment failure.\n3. **Tests**: none planned, in a payment path, with the plan itself noting the rollout\n   checklist is manual verification, not regression coverage.\n4. **Performance**: a per-order query loop inside a 2-second DB budget.\n\nPlus one explicitly open architecture choice: separate handler class vs. reuse of\n`WebhookDispatcher`.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (plan author) | Architecture: PLAN.md \"Architecture\" + \"whether to add a separate implementation or reuse WebhookDispatcher remains open\". Name `Webhooks::StripePaymentWebhookHandler` is settled. | New class bypasses `WebhookDispatcher` | see 0D R1 comparison | unresolved | pending |\n| R2 (plan author) | DB access: PLAN.md \"Database access\"; contracts: adapter forwards raw string, no cast/escape, opaque TEXT IDs with punctuation/Unicode, \"a valid signature does not make it safe for SQL\". | `request.params.userId` interpolated into raw SQL fragment | see 0D R2 comparison | unresolved | pending |\n| R3 (plan author) | Email leg: PLAN.md \"Webhook fan-out\"; contracts: mail client rethrows, records attempt durably before rethrow, provider idempotency key per PaymentIntent, ingress returns 500 on exception, runbook \"never replay the payment blindly\". | Inline email, no error handling, exception propagates to ingress → HTTP 500 → Stripe retry | see 0D R3 comparison | unresolved | pending |\n| R4 (plan author) | Tests: PLAN.md \"Tests: None planned\"; contract: rollout checklist is manual, \"no new automated tests are planned\". Engineering preference: well-tested code non-negotiable. | No automated handler tests | see 0D R4 comparison | unresolved | pending |\n| R5 (plan author) | Performance: PLAN.md \"Performance\"; contract: DB/ingress deadline 2s combined, order loop is data loading for one receipt. | User lookup + one query per order in a loop | see 0D R5 comparison | unresolved | pending |\n| M1 (user) | Review mode | HOLD SCOPE (explicit in user request) | n/a | approved | User request line 1: \"review this plan thoroughly in HOLD SCOPE mode\" |\n| M2 (user) | /office-hours prerequisite | skipped | n/a | approved | User request line 2: \"skip the optional /office-hours prerequisite\" |\n\nStated limits recorded: mail deadline 1s (MailTimeout, no inline retries); DB+ingress\ncombined 2s; webhook deadline 10s; one receipt per PaymentIntent; HTTP 200 on\nmissing/nil/empty user_id, ownership mismatch, unknown user; HTTP 500 on DB exception.\nPlanned changed files (estimate): 1 new handler class, 1 registration/flag wiring edit,\n0 tests as written (2–3 test files if R4 approves). Total ≈ 2–5 files.\n\n## Step 0A. Premise Challenge\n\n1. **Right problem?** Yes, narrowly. Moving orchestration into application-owned code is\n   a reasonable ownership move and the product behavior is fixed. But the plan's four\n   implementation sections each regress against the retained contracts; the real work is\n   making the new handler at least as safe as the one it replaces, not the namespace move.\n2. **User/business outcome?** Users get the same paid status and receipt; the business\n   gets code it owns. The plan reaches that directly, but the raw-SQL section introduces\n   a risk the prior handler presumably did not have (the plan does not claim the prior\n   handler interpolated SQL). A \"clean namespace\" is a proxy goal if it costs safety.\n3. **Do nothing?** The prior adapter handler keeps working behind the existing flag. The\n   pain is ownership/maintainability, real but not urgent. That argues for doing the\n   move carefully rather than fast: nothing forces the raw SQL or the missing tests.\n\n## Step 0B. Existing Code Leverage\n\n| Sub-problem | Existing code (per retained contracts) | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware | yes (unchanged) |\n| Event type filter | ingress | yes |\n| Payload → `userId` | payload adapter | yes |\n| Dedup + per-user lock | event guard | yes |\n| Ownership guard | ingress | yes |\n| Unknown-user guard | lookup-result guard | yes |\n| Handler routing | `WebhookDispatcher` | **no, bypassed (R1)** |\n| User lookup | DB client with tracing | partially: plan uses raw SQL fragment (R2) |\n| User update | existing idempotent update | yes |\n| Receipt email | shared mail client (idempotency key, retry record, 1s deadline) | yes, but rethrow unhandled (R3) |\n| Observability | ingress wrapper logs/alerts, DB+mail traces with handler identity | yes |\n| Rollout | feature flag + tested rollback + staging replay checklist | yes |\n\nRebuild check: the only thing the plan rebuilds is handler routing (bypassing the\ndispatcher). The plan gives one reason (\"clean namespace separation\"); namespace is\nalready settled by the class name, so the dispatcher bypass needs its own justification.\n\nExisting flow with the new handler in place:\n\n```\nStripe ──POST──> ingress middleware\n                   ├─ verify signature (raw body) ── invalid → 4xx\n                   ├─ event type filter ── not payment_intent.succeeded → 200\n                   ├─ payload adapter → request.params.userId\n                   │    └─ missing/nil/empty → 200 + warning\n                   ├─ ownership guard (PI ↔ user binding) ── mismatch → 200 + warning\n                   ├─ event guard: acquire per-user lock → check completion marker\n                   │    └─ already complete → 200 (handler not invoked)\n                   ├─ [WebhookDispatcher ── bypassed by plan (R1)]\n                   └─ StripePaymentWebhookHandler\n                        ├─ user lookup (R2: raw SQL fragment)\n                        │    └─ unknown/deleted → 200 + log, stop\n                        ├─ load orders (R5: loop, N queries)\n                        ├─ update user: payment_status=paid, payment_intent_id\n                        ├─ [DB txn commits → completion marker recorded]\n                        └─ mail client send (1s deadline, idempotency key = PI id)\n                             └─ exception → rethrown → ingress → 500 → Stripe retry (R3)\n```\n\n## Step 0C. Dream State Mapping\n\n```\n  CURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\n  Library-adapter handler owns     App-owned handler class,        App-owned handlers for every\n  payment orchestration; shared    same guards, same product       Stripe event type, all routed\n  ingress guards, dispatcher,      behavior. As written: raw       through the shared dispatcher,\n  mail client, runbooks exist      SQL, unhandled mail leg,        parameterized DB access, tested\n  and are trusted.                 no tests, N+1 order loop.       failure paths, notification\n                                                                   failures never fail the webhook.\n```\n\nThe plan moves toward the ideal on ownership and away from it on three axes (SQL\nsafety, dispatcher bypass, test coverage). The ideal state is one handler pattern that\nthe next Stripe event type can copy; this handler is the template. Whatever gets\napproved here gets cloned.\n\n## Landscape check (Layer 1/2/3)\n\n- **Layer 1 (tried and true):** verify signature on raw body, dedupe on `event.id`\n  with a uniqueness constraint, commit state before returning 200, return 2xx fast and\n  push slow side effects (email) out of the request, use parameterized queries\n  everywhere external strings touch SQL.\n- **Layer 2 (current search results):** same four pillars, with emphasis that a\n  non-idempotent handler produces duplicate emails/credits on Stripe retries, and that\n  a late retry should \"write yesterday's answer\" (idempotent assignment, which this\n  plan's user update already does). Sources: dev.to (whoffagents), theroadtoenterprise.com,\n  hookray.com Stripe webhook best practices 2026.\n- **Layer 3 (first principles):** the retained contracts already give this handler\n  idempotent update + idempotent mail. The remaining question is whose failure should\n  fail the webhook. A DB failure means the payment state is not recorded: fail loudly,\n  let Stripe retry. A mail failure after commit means the payment is recorded and a\n  notification is queued for retry by the existing procedure: the webhook has done its\n  job, and a 500 here makes Stripe replay an already-committed payment and trips the\n  payment-failure alert for a mail outage. Conventional \"let it propagate\" is wrong for\n  the mail leg specifically.\n\n## Step 0D. Alternatives (pending; one row asked at a time)\n\n### R1 — Handler routing: bypass vs. reuse `WebhookDispatcher`\n\nPrior answers checked: class name settled (`Webhooks::StripePaymentWebhookHandler`);\nplan explicitly leaves separate-vs-reuse open. No prior approval to reuse.\n\n| Commitment | Source/approval or pending | Current | A: register in WebhookDispatcher | B: bypass dispatcher (as written) | C: reuse dispatcher, no new class |\n|---|---|---|---|---|---|\n| Class name | settled | `Webhooks::StripePaymentWebhookHandler` | same | same | n/a (no class) |\n| Routing path | pending | dispatcher (prior handler) | dispatcher → new class | ingress → new class directly | dispatcher → inline module fn |\n| Guards unchanged | contract | yes | yes | yes | yes |\n| Feature flag | contract | existing flag | flag selects dispatcher target | flag selects ingress target | flag selects dispatcher target |\n| Handler identity in traces | contract | yes | yes | yes | yes |\n\n- **A) Register the new class as the dispatcher's target for `payment_intent.succeeded`.**\n  Effort S, risk low. Pros: one routing mechanism for all event types; the next handler\n  copies this pattern; flag flip is a one-line dispatcher table change. Cons: dispatcher\n  interface may impose a signature on the class; small coupling to existing module.\n- **B) Bypass the dispatcher (as written).** Effort S, risk medium. Pros: zero coupling\n  to dispatcher internals; matches plan text. Cons: two routing paths to reason about\n  during rollout and rollback; the \"clean namespace\" reason is already satisfied by the\n  class name; future handlers have two precedents.\n- **C) No new class; add orchestration inside the dispatcher module.** Effort S, risk\n  medium. Pros: smallest diff. Cons: contradicts the approved app-owned class name and\n  the motivation to move orchestration into application-owned code; dispatcher grows\n  business logic.\n\nRecommendation: A. Verification coverage: A and B both need a routing test (flag on →\nnew handler invoked; flag off → prior handler) if R4 approves tests.\n",
            "savedAt": "2026-09-16T01:15:52.104Z",
            "savedPlanSha256": "e1b4af2caaf3503fcc1fd98c02ca646ebcf40d3255b9f04e07e339303c3941be",
            "questionIssuedAt": "2026-09-16T01:16:04.657Z"
          },
          {
            "call": {
              "sessionId": "a08012c1-ab37-485e-a063-666d39b831c8",
              "toolUseId": "toolu_01HdFMwg29F59cCZrzaWDihs",
              "questions": [
                {
                  "question": "D3 (ledger R2) — How should the handler look up the user from `request.params.userId`?\nProject/branch/task: payment plan review on `main`, HOLD SCOPE.\nELI10: The user ID comes from Stripe PaymentIntent metadata, which whoever created the PaymentIntent controls. The plan pastes that string straight into SQL text. The plan's own contracts say the adapter never escapes it, IDs can contain any punctuation or Unicode, and a valid Stripe signature doesn't make the string safe. A bound parameter hands the string to the database driver as data, never as SQL. It is a one-line difference.\nStakes if we pick wrong: SQL injection through payment metadata on a shared webhook URL, and any legitimate user ID containing a quote breaks the query, returns 500, and makes Stripe retry a poison event for days.\nRecommendation: A because it removes the entire injection class for one line and is the only option consistent with the retained contracts.\nCompleteness: A=10/10, B=2/10, C=5/10\nNet: bind the value and the problem is gone; anything else keeps executable text in the query path.",
                  "header": "R2 SQL",
                  "multiSelect": false,
                  "options": [
                    {
                      "label": "A) Bound parameter / ORM finder (recommended)",
                      "description": "✅ Injection class eliminated; the driver treats the ID as data, never as SQL\n✅ Unicode and punctuation IDs round-trip exactly, matching the opaque-TEXT contract\n❌ If the shared DB client only exposes a fragment API, one small bound-query helper is needed"
                    },
                    {
                      "label": "B) Raw SQL fragment (as written)",
                      "description": "✅ Matches the plan text with no change\n✅ No new helper or client method needed\n❌ SQL injection via Stripe metadata; IDs with quotes cause DB exceptions, 500s, and Stripe retry storms"
                    },
                    {
                      "label": "C) Escape in the handler, then interpolate",
                      "description": "✅ Keeps the fragment shape the plan author wrote\n✅ Blocks the obvious single-quote payloads\n❌ Reimplements driver escaping, dialect-specific, and historically the mitigation that gets bypassed"
                    }
                  ]
                }
              ],
              "answered": true,
              "failed": false,
              "answers": {
                "D3 (ledger R2) — How should the handler look up the user from `request.params.userId`?\nProject/branch/task: payment plan review on `main`, HOLD SCOPE.\nELI10: The user ID comes from Stripe PaymentIntent metadata, which whoever created the PaymentIntent controls. The plan pastes that string straight into SQL text. The plan's own contracts say the adapter never escapes it, IDs can contain any punctuation or Unicode, and a valid Stripe signature doesn't make the string safe. A bound parameter hands the string to the database driver as data, never as SQL. It is a one-line difference.\nStakes if we pick wrong: SQL injection through payment metadata on a shared webhook URL, and any legitimate user ID containing a quote breaks the query, returns 500, and makes Stripe retry a poison event for days.\nRecommendation: A because it removes the entire injection class for one line and is the only option consistent with the retained contracts.\nCompleteness: A=10/10, B=2/10, C=5/10\nNet: bind the value and the problem is gone; anything else keeps executable text in the query path.": "A) Bound parameter / ORM finder (recommended)"
              },
              "unansweredQuestionIndices": [],
              "answeredAt": "2026-09-16T01:16:48.500Z"
            },
            "savedPlan": "# Working Plan: Payment Processing Integration (CEO review, HOLD SCOPE)\n\nSource plan: `PLAN.md` on `main` (commit 98f63fa). Review skill: /plan-ceo-review.\nStorage: this file is the requested working plan (user-specified path). Plan mode is\nactive; no code is edited during this review.\n\nPost-review action (approved in D1, deferred because plan mode forbids the edit now):\nappend gstack skill routing rules to `CLAUDE.md` and commit\n`chore: add gstack skill routing rules to CLAUDE.md`.\n\n## Context\n\nThe approved motivation: move Stripe `payment_intent.succeeded` orchestration out of\nthe prior library-adapter handler into application-owned code, keeping the existing\npayment and receipt behavior byte-for-byte from the user's point of view. The handler\nruns inside unchanged ingress guards (signature check, event-type filter, event-ID dedup,\nper-user lock, ownership guard, unknown-user guard). Everything in \"Existing contracts\nretained\" is treated as fixed and verified-by-plan-author; this review does not\nre-litigate it.\n\nThe plan as written has four sections that conflict with its own retained contracts:\n\n1. **Database access** interpolates `request.params.userId` (an opaque, unsanitized,\n   attacker-influenceable TEXT string from Stripe metadata) into a raw SQL fragment.\n   The plan itself states \"a valid signature does not make it safe for SQL.\"\n2. **Webhook fan-out** rethrows mail exceptions to the ingress wrapper, which returns\n   HTTP 500 and makes Stripe replay a committed payment, while the runbook says\n   \"never replay the payment blindly\" and the alert for \"failed webhook processing\"\n   cannot distinguish a notification outage from a payment failure.\n3. **Tests**: none planned, in a payment path, with the plan itself noting the rollout\n   checklist is manual verification, not regression coverage.\n4. **Performance**: a per-order query loop inside a 2-second DB budget.\n\nPlus one explicitly open architecture choice: separate handler class vs. reuse of\n`WebhookDispatcher`.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (plan author) | Architecture: PLAN.md \"Architecture\" + \"whether to add a separate implementation or reuse WebhookDispatcher remains open\". Name `Webhooks::StripePaymentWebhookHandler` is settled. | New class bypasses `WebhookDispatcher` | A: register `Webhooks::StripePaymentWebhookHandler` as the dispatcher target for `payment_intent.succeeded`, flag-selected | approved | D2 answer \"A) Register in WebhookDispatcher\". Scope: routing only; class name unchanged; guards unchanged. |\n| R2 (plan author) | DB access: PLAN.md \"Database access\"; contracts: adapter forwards raw string, no cast/escape, opaque TEXT IDs with punctuation/Unicode, \"a valid signature does not make it safe for SQL\". | `request.params.userId` interpolated into raw SQL fragment | see 0D R2 comparison | unresolved | pending |\n| R3 (plan author) | Email leg: PLAN.md \"Webhook fan-out\"; contracts: mail client rethrows, records attempt durably before rethrow, provider idempotency key per PaymentIntent, ingress returns 500 on exception, runbook \"never replay the payment blindly\". | Inline email, no error handling, exception propagates to ingress → HTTP 500 → Stripe retry | see 0D R3 comparison | unresolved | pending |\n| R4 (plan author) | Tests: PLAN.md \"Tests: None planned\"; contract: rollout checklist is manual, \"no new automated tests are planned\". Engineering preference: well-tested code non-negotiable. | No automated handler tests | see 0D R4 comparison | unresolved | pending |\n| R5 (plan author) | Performance: PLAN.md \"Performance\"; contract: DB/ingress deadline 2s combined, order loop is data loading for one receipt. | User lookup + one query per order in a loop | see 0D R5 comparison | unresolved | pending |\n| M1 (user) | Review mode | HOLD SCOPE (explicit in user request) | n/a | approved | User request line 1: \"review this plan thoroughly in HOLD SCOPE mode\" |\n| M2 (user) | /office-hours prerequisite | skipped | n/a | approved | User request line 2: \"skip the optional /office-hours prerequisite\" |\n\nStated limits recorded: mail deadline 1s (MailTimeout, no inline retries); DB+ingress\ncombined 2s; webhook deadline 10s; one receipt per PaymentIntent; HTTP 200 on\nmissing/nil/empty user_id, ownership mismatch, unknown user; HTTP 500 on DB exception.\nPlanned changed files (estimate): 1 new handler class, 1 registration/flag wiring edit,\n0 tests as written (2–3 test files if R4 approves). Total ≈ 2–5 files.\n\n## Step 0A. Premise Challenge\n\n1. **Right problem?** Yes, narrowly. Moving orchestration into application-owned code is\n   a reasonable ownership move and the product behavior is fixed. But the plan's four\n   implementation sections each regress against the retained contracts; the real work is\n   making the new handler at least as safe as the one it replaces, not the namespace move.\n2. **User/business outcome?** Users get the same paid status and receipt; the business\n   gets code it owns. The plan reaches that directly, but the raw-SQL section introduces\n   a risk the prior handler presumably did not have (the plan does not claim the prior\n   handler interpolated SQL). A \"clean namespace\" is a proxy goal if it costs safety.\n3. **Do nothing?** The prior adapter handler keeps working behind the existing flag. The\n   pain is ownership/maintainability, real but not urgent. That argues for doing the\n   move carefully rather than fast: nothing forces the raw SQL or the missing tests.\n\n## Step 0B. Existing Code Leverage\n\n| Sub-problem | Existing code (per retained contracts) | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware | yes (unchanged) |\n| Event type filter | ingress | yes |\n| Payload → `userId` | payload adapter | yes |\n| Dedup + per-user lock | event guard | yes |\n| Ownership guard | ingress | yes |\n| Unknown-user guard | lookup-result guard | yes |\n| Handler routing | `WebhookDispatcher` | **no, bypassed (R1)** |\n| User lookup | DB client with tracing | partially: plan uses raw SQL fragment (R2) |\n| User update | existing idempotent update | yes |\n| Receipt email | shared mail client (idempotency key, retry record, 1s deadline) | yes, but rethrow unhandled (R3) |\n| Observability | ingress wrapper logs/alerts, DB+mail traces with handler identity | yes |\n| Rollout | feature flag + tested rollback + staging replay checklist | yes |\n\nRebuild check: the only thing the plan rebuilds is handler routing (bypassing the\ndispatcher). The plan gives one reason (\"clean namespace separation\"); namespace is\nalready settled by the class name, so the dispatcher bypass needs its own justification.\n\nExisting flow with the new handler in place:\n\n```\nStripe ──POST──> ingress middleware\n                   ├─ verify signature (raw body) ── invalid → 4xx\n                   ├─ event type filter ── not payment_intent.succeeded → 200\n                   ├─ payload adapter → request.params.userId\n                   │    └─ missing/nil/empty → 200 + warning\n                   ├─ ownership guard (PI ↔ user binding) ── mismatch → 200 + warning\n                   ├─ event guard: acquire per-user lock → check completion marker\n                   │    └─ already complete → 200 (handler not invoked)\n                   ├─ [WebhookDispatcher ── bypassed by plan (R1)]\n                   └─ StripePaymentWebhookHandler\n                        ├─ user lookup (R2: raw SQL fragment)\n                        │    └─ unknown/deleted → 200 + log, stop\n                        ├─ load orders (R5: loop, N queries)\n                        ├─ update user: payment_status=paid, payment_intent_id\n                        ├─ [DB txn commits → completion marker recorded]\n                        └─ mail client send (1s deadline, idempotency key = PI id)\n                             └─ exception → rethrown → ingress → 500 → Stripe retry (R3)\n```\n\n## Step 0C. Dream State Mapping\n\n```\n  CURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\n  Library-adapter handler owns     App-owned handler class,        App-owned handlers for every\n  payment orchestration; shared    same guards, same product       Stripe event type, all routed\n  ingress guards, dispatcher,      behavior. As written: raw       through the shared dispatcher,\n  mail client, runbooks exist      SQL, unhandled mail leg,        parameterized DB access, tested\n  and are trusted.                 no tests, N+1 order loop.       failure paths, notification\n                                                                   failures never fail the webhook.\n```\n\nThe plan moves toward the ideal on ownership and away from it on three axes (SQL\nsafety, dispatcher bypass, test coverage). The ideal state is one handler pattern that\nthe next Stripe event type can copy; this handler is the template. Whatever gets\napproved here gets cloned.\n\n## Landscape check (Layer 1/2/3)\n\n- **Layer 1 (tried and true):** verify signature on raw body, dedupe on `event.id`\n  with a uniqueness constraint, commit state before returning 200, return 2xx fast and\n  push slow side effects (email) out of the request, use parameterized queries\n  everywhere external strings touch SQL.\n- **Layer 2 (current search results):** same four pillars, with emphasis that a\n  non-idempotent handler produces duplicate emails/credits on Stripe retries, and that\n  a late retry should \"write yesterday's answer\" (idempotent assignment, which this\n  plan's user update already does). Sources: dev.to (whoffagents), theroadtoenterprise.com,\n  hookray.com Stripe webhook best practices 2026.\n- **Layer 3 (first principles):** the retained contracts already give this handler\n  idempotent update + idempotent mail. The remaining question is whose failure should\n  fail the webhook. A DB failure means the payment state is not recorded: fail loudly,\n  let Stripe retry. A mail failure after commit means the payment is recorded and a\n  notification is queued for retry by the existing procedure: the webhook has done its\n  job, and a 500 here makes Stripe replay an already-committed payment and trips the\n  payment-failure alert for a mail outage. Conventional \"let it propagate\" is wrong for\n  the mail leg specifically.\n\n## Step 0D. Alternatives (pending; one row asked at a time)\n\n### R1 — Handler routing: bypass vs. reuse `WebhookDispatcher`\n\nPrior answers checked: class name settled (`Webhooks::StripePaymentWebhookHandler`);\nplan explicitly leaves separate-vs-reuse open. No prior approval to reuse.\n\n| Commitment | Source/approval or pending | Current | A: register in WebhookDispatcher | B: bypass dispatcher (as written) | C: reuse dispatcher, no new class |\n|---|---|---|---|---|---|\n| Class name | settled | `Webhooks::StripePaymentWebhookHandler` | same | same | n/a (no class) |\n| Routing path | pending | dispatcher (prior handler) | dispatcher → new class | ingress → new class directly | dispatcher → inline module fn |\n| Guards unchanged | contract | yes | yes | yes | yes |\n| Feature flag | contract | existing flag | flag selects dispatcher target | flag selects ingress target | flag selects dispatcher target |\n| Handler identity in traces | contract | yes | yes | yes | yes |\n\n- **A) Register the new class as the dispatcher's target for `payment_intent.succeeded`.**\n  Effort S, risk low. Pros: one routing mechanism for all event types; the next handler\n  copies this pattern; flag flip is a one-line dispatcher table change. Cons: dispatcher\n  interface may impose a signature on the class; small coupling to existing module.\n- **B) Bypass the dispatcher (as written).** Effort S, risk medium. Pros: zero coupling\n  to dispatcher internals; matches plan text. Cons: two routing paths to reason about\n  during rollout and rollback; the \"clean namespace\" reason is already satisfied by the\n  class name; future handlers have two precedents.\n- **C) No new class; add orchestration inside the dispatcher module.** Effort S, risk\n  medium. Pros: smallest diff. Cons: contradicts the approved app-owned class name and\n  the motivation to move orchestration into application-owned code; dispatcher grows\n  business logic.\n\nRecommendation: A. Verification coverage: A and B both need a routing test (flag on →\nnew handler invoked; flag off → prior handler) if R4 approves tests.\n\n**R1 decision (D2): A approved.** Architecture section amended below.\n\n### R2 — User lookup: raw SQL fragment vs. bound parameter\n\nPrior answers checked: contracts say the adapter forwards the external string\nunchanged, no cast/escape/sanitize; IDs are opaque TEXT with punctuation and Unicode;\n\"a valid signature does not make it safe for SQL.\" No prior approval of raw SQL; the\nplan section is a proposal, not a contract. Threat: `metadata.user_id` is set when the\nPaymentIntent is created; anyone who can influence that metadata (client-side\nPaymentIntent creation, a compromised integration, a bug in the creating code) controls\na string that lands in SQL. The ownership guard compares identity, so a crafted string\nbound to its own PaymentIntent passes the guard and reaches the fragment.\n\n| Commitment | Source/approval or pending | Current | A: bound parameter / ORM finder | B: raw fragment (as written) | C: raw fragment + app-level escaping |\n|---|---|---|---|---|---|\n| Lookup input | contract | raw external string | same string, passed as a bind value | same string, interpolated | same string, escaped then interpolated |\n| ID format | contract (opaque TEXT) | no cast/validation | no cast; any nonempty string is a valid bind | any string is executable SQL text | escaping must be correct for every dialect quirk |\n| Unicode/punctuation | contract | must round-trip | driver handles | breaks or injects on `'`, `;`, `--` | brittle |\n| Trace fields | contract | DB client attaches user ID + event ID | unchanged | unchanged | unchanged |\n\n- **A) Bound parameter (`WHERE id = $1` / ORM `find_by(id: user_id)`).** Effort S\n  (one line), risk low. Pros: eliminates the injection class; Unicode/punctuation IDs\n  round-trip correctly; uses the shared DB client as every other lookup does. Cons:\n  none material; if the existing DB client only exposes a raw-fragment API, one small\n  helper is needed.\n- **B) Raw fragment (as written).** Effort S, risk high. Pros: matches plan text. Cons:\n  SQL injection via Stripe metadata; a legitimate user ID containing `'` breaks the\n  query and produces a DB exception → 500 → Stripe retries a poison event until it\n  gives up; contradicts the plan's own contract note.\n- **C) Escape in the handler, then interpolate.** Effort S, risk medium. Pros: keeps the\n  fragment shape. Cons: reimplements what the driver does, dialect-specific, the classic\n  \"almost right\" mitigation.\n\nOnly A is viable against the stated contracts; B and C are listed to show what is\nbeing rejected. Recommendation: A.\n",
            "savedAt": "2026-09-16T01:16:35.928Z",
            "savedPlanSha256": "6712710683d5da55cb3c388ffdce0bc4e3d05c344806a72b00994bd843818e3d",
            "questionIssuedAt": "2026-09-16T01:16:48.377Z"
          },
          {
            "call": {
              "sessionId": "a08012c1-ab37-485e-a063-666d39b831c8",
              "toolUseId": "toolu_01GkoT2Z9n9E3H1hVf32TQ9K",
              "questions": [
                {
                  "question": "D4 (ledger R3) — When the receipt email fails after the payment update has committed, what should the webhook return?\nProject/branch/task: payment plan review on `main`, HOLD SCOPE.\nELI10: The handler updates the user (payment recorded) and then sends the receipt. If the mail provider is down, the shared mail client already saves a retry record and raises. As written, that exception reaches the ingress, which returns 500, so Stripe replays the event for days, the payment-failure alert fires on every retry, and the receipt gets retried by two systems at once. Option A catches only the mail client's own exception classes, records a `notification_failed` outcome, and returns 200, leaving the existing notification retry procedure as the single owner. In every option the update commits before the send and the send stays outside the DB transaction.\nStakes if we pick wrong: either on-call gets paged for payment failures during a mail outage and Stripe hammers a committed payment, or (with a sloppy catch-all) a real error gets swallowed silently.\nRecommendation: A because the payment is already safe once committed, the runbook already says retry only the notification, and the rescue is one narrow block plus a test.\nCompleteness: A=9/10, B=3/10, C=10/10 (C adds a job queue, outside hold scope)\nNet: one class-specific rescue block vs. a retry storm and misleading alerts vs. new queue infrastructure.",
                  "header": "R3 Email",
                  "multiSelect": false,
                  "options": [
                    {
                      "label": "A) Commit, send, rescue mail errors only, return 200 (recommended)",
                      "description": "✅ Payment-failure alert only fires for payment failures; mail outages route to the existing notification dashboard and runbook\n✅ No Stripe retry storm on a committed payment; one retry owner for the receipt\n❌ Adds one rescue block that must stay class-specific and be covered by a test so it never swallows non-mail errors"
                    },
                    {
                      "label": "B) Rethrow to ingress, HTTP 500 (as written)",
                      "description": "✅ No error-handling code in the handler at all\n✅ Stripe's retry gives a free second send attempt minutes later\n❌ Every mail blip pages as a payment failure and two systems retry the same receipt for days"
                    },
                    {
                      "label": "C) Enqueue the send as a background job after commit",
                      "description": "✅ Fastest webhook response; job retries are a standard, well-understood pattern\n✅ Mail latency can never threaten the 10s webhook deadline\n❌ Needs a job queue and worker not in the retained contracts; behavior change and infra beyond HOLD SCOPE"
                    }
                  ]
                }
              ],
              "answered": true,
              "failed": false,
              "answers": {
                "D4 (ledger R3) — When the receipt email fails after the payment update has committed, what should the webhook return?\nProject/branch/task: payment plan review on `main`, HOLD SCOPE.\nELI10: The handler updates the user (payment recorded) and then sends the receipt. If the mail provider is down, the shared mail client already saves a retry record and raises. As written, that exception reaches the ingress, which returns 500, so Stripe replays the event for days, the payment-failure alert fires on every retry, and the receipt gets retried by two systems at once. Option A catches only the mail client's own exception classes, records a `notification_failed` outcome, and returns 200, leaving the existing notification retry procedure as the single owner. In every option the update commits before the send and the send stays outside the DB transaction.\nStakes if we pick wrong: either on-call gets paged for payment failures during a mail outage and Stripe hammers a committed payment, or (with a sloppy catch-all) a real error gets swallowed silently.\nRecommendation: A because the payment is already safe once committed, the runbook already says retry only the notification, and the rescue is one narrow block plus a test.\nCompleteness: A=9/10, B=3/10, C=10/10 (C adds a job queue, outside hold scope)\nNet: one class-specific rescue block vs. a retry storm and misleading alerts vs. new queue infrastructure.": "A) Commit, send, rescue mail errors only, return 200 (recommended)"
              },
              "unansweredQuestionIndices": [],
              "answeredAt": "2026-09-16T01:17:55.788Z"
            },
            "savedPlan": "# Working Plan: Payment Processing Integration (CEO review, HOLD SCOPE)\n\nSource plan: `PLAN.md` on `main` (commit 98f63fa). Review skill: /plan-ceo-review.\nStorage: this file is the requested working plan (user-specified path). Plan mode is\nactive; no code is edited during this review.\n\nPost-review action (approved in D1, deferred because plan mode forbids the edit now):\nappend gstack skill routing rules to `CLAUDE.md` and commit\n`chore: add gstack skill routing rules to CLAUDE.md`.\n\n## Context\n\nThe approved motivation: move Stripe `payment_intent.succeeded` orchestration out of\nthe prior library-adapter handler into application-owned code, keeping the existing\npayment and receipt behavior byte-for-byte from the user's point of view. The handler\nruns inside unchanged ingress guards (signature check, event-type filter, event-ID dedup,\nper-user lock, ownership guard, unknown-user guard). Everything in \"Existing contracts\nretained\" is treated as fixed and verified-by-plan-author; this review does not\nre-litigate it.\n\nThe plan as written has four sections that conflict with its own retained contracts:\n\n1. **Database access** interpolates `request.params.userId` (an opaque, unsanitized,\n   attacker-influenceable TEXT string from Stripe metadata) into a raw SQL fragment.\n   The plan itself states \"a valid signature does not make it safe for SQL.\"\n2. **Webhook fan-out** rethrows mail exceptions to the ingress wrapper, which returns\n   HTTP 500 and makes Stripe replay a committed payment, while the runbook says\n   \"never replay the payment blindly\" and the alert for \"failed webhook processing\"\n   cannot distinguish a notification outage from a payment failure.\n3. **Tests**: none planned, in a payment path, with the plan itself noting the rollout\n   checklist is manual verification, not regression coverage.\n4. **Performance**: a per-order query loop inside a 2-second DB budget.\n\nPlus one explicitly open architecture choice: separate handler class vs. reuse of\n`WebhookDispatcher`.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (plan author) | Architecture: PLAN.md \"Architecture\" + \"whether to add a separate implementation or reuse WebhookDispatcher remains open\". Name `Webhooks::StripePaymentWebhookHandler` is settled. | New class bypasses `WebhookDispatcher` | A: register `Webhooks::StripePaymentWebhookHandler` as the dispatcher target for `payment_intent.succeeded`, flag-selected | approved | D2 answer \"A) Register in WebhookDispatcher\". Scope: routing only; class name unchanged; guards unchanged. |\n| R2 (plan author) | DB access: PLAN.md \"Database access\"; contracts: adapter forwards raw string, no cast/escape, opaque TEXT IDs with punctuation/Unicode, \"a valid signature does not make it safe for SQL\". | `request.params.userId` interpolated into raw SQL fragment | A: bound parameter / ORM finder via the shared DB client; no cast, no format validation | approved | D3 answer \"A) Bound parameter / ORM finder\". Scope: lookup query only; ID remains opaque TEXT; adapter unchanged. |\n| R3 (plan author) | Email leg: PLAN.md \"Webhook fan-out\"; contracts: mail client rethrows, records attempt durably before rethrow, provider idempotency key per PaymentIntent, ingress returns 500 on exception, runbook \"never replay the payment blindly\". | Inline email, no error handling, exception propagates to ingress → HTTP 500 → Stripe retry | see 0D R3 comparison | unresolved | pending |\n| R4 (plan author) | Tests: PLAN.md \"Tests: None planned\"; contract: rollout checklist is manual, \"no new automated tests are planned\". Engineering preference: well-tested code non-negotiable. | No automated handler tests | see 0D R4 comparison | unresolved | pending |\n| R5 (plan author) | Performance: PLAN.md \"Performance\"; contract: DB/ingress deadline 2s combined, order loop is data loading for one receipt. | User lookup + one query per order in a loop | see 0D R5 comparison | unresolved | pending |\n| M1 (user) | Review mode | HOLD SCOPE (explicit in user request) | n/a | approved | User request line 1: \"review this plan thoroughly in HOLD SCOPE mode\" |\n| M2 (user) | /office-hours prerequisite | skipped | n/a | approved | User request line 2: \"skip the optional /office-hours prerequisite\" |\n\nStated limits recorded: mail deadline 1s (MailTimeout, no inline retries); DB+ingress\ncombined 2s; webhook deadline 10s; one receipt per PaymentIntent; HTTP 200 on\nmissing/nil/empty user_id, ownership mismatch, unknown user; HTTP 500 on DB exception.\nPlanned changed files (estimate): 1 new handler class, 1 registration/flag wiring edit,\n0 tests as written (2–3 test files if R4 approves). Total ≈ 2–5 files.\n\n## Step 0A. Premise Challenge\n\n1. **Right problem?** Yes, narrowly. Moving orchestration into application-owned code is\n   a reasonable ownership move and the product behavior is fixed. But the plan's four\n   implementation sections each regress against the retained contracts; the real work is\n   making the new handler at least as safe as the one it replaces, not the namespace move.\n2. **User/business outcome?** Users get the same paid status and receipt; the business\n   gets code it owns. The plan reaches that directly, but the raw-SQL section introduces\n   a risk the prior handler presumably did not have (the plan does not claim the prior\n   handler interpolated SQL). A \"clean namespace\" is a proxy goal if it costs safety.\n3. **Do nothing?** The prior adapter handler keeps working behind the existing flag. The\n   pain is ownership/maintainability, real but not urgent. That argues for doing the\n   move carefully rather than fast: nothing forces the raw SQL or the missing tests.\n\n## Step 0B. Existing Code Leverage\n\n| Sub-problem | Existing code (per retained contracts) | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware | yes (unchanged) |\n| Event type filter | ingress | yes |\n| Payload → `userId` | payload adapter | yes |\n| Dedup + per-user lock | event guard | yes |\n| Ownership guard | ingress | yes |\n| Unknown-user guard | lookup-result guard | yes |\n| Handler routing | `WebhookDispatcher` | **no, bypassed (R1)** |\n| User lookup | DB client with tracing | partially: plan uses raw SQL fragment (R2) |\n| User update | existing idempotent update | yes |\n| Receipt email | shared mail client (idempotency key, retry record, 1s deadline) | yes, but rethrow unhandled (R3) |\n| Observability | ingress wrapper logs/alerts, DB+mail traces with handler identity | yes |\n| Rollout | feature flag + tested rollback + staging replay checklist | yes |\n\nRebuild check: the only thing the plan rebuilds is handler routing (bypassing the\ndispatcher). The plan gives one reason (\"clean namespace separation\"); namespace is\nalready settled by the class name, so the dispatcher bypass needs its own justification.\n\nExisting flow with the new handler in place:\n\n```\nStripe ──POST──> ingress middleware\n                   ├─ verify signature (raw body) ── invalid → 4xx\n                   ├─ event type filter ── not payment_intent.succeeded → 200\n                   ├─ payload adapter → request.params.userId\n                   │    └─ missing/nil/empty → 200 + warning\n                   ├─ ownership guard (PI ↔ user binding) ── mismatch → 200 + warning\n                   ├─ event guard: acquire per-user lock → check completion marker\n                   │    └─ already complete → 200 (handler not invoked)\n                   ├─ [WebhookDispatcher ── bypassed by plan (R1)]\n                   └─ StripePaymentWebhookHandler\n                        ├─ user lookup (R2: raw SQL fragment)\n                        │    └─ unknown/deleted → 200 + log, stop\n                        ├─ load orders (R5: loop, N queries)\n                        ├─ update user: payment_status=paid, payment_intent_id\n                        ├─ [DB txn commits → completion marker recorded]\n                        └─ mail client send (1s deadline, idempotency key = PI id)\n                             └─ exception → rethrown → ingress → 500 → Stripe retry (R3)\n```\n\n## Step 0C. Dream State Mapping\n\n```\n  CURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\n  Library-adapter handler owns     App-owned handler class,        App-owned handlers for every\n  payment orchestration; shared    same guards, same product       Stripe event type, all routed\n  ingress guards, dispatcher,      behavior. As written: raw       through the shared dispatcher,\n  mail client, runbooks exist      SQL, unhandled mail leg,        parameterized DB access, tested\n  and are trusted.                 no tests, N+1 order loop.       failure paths, notification\n                                                                   failures never fail the webhook.\n```\n\nThe plan moves toward the ideal on ownership and away from it on three axes (SQL\nsafety, dispatcher bypass, test coverage). The ideal state is one handler pattern that\nthe next Stripe event type can copy; this handler is the template. Whatever gets\napproved here gets cloned.\n\n## Landscape check (Layer 1/2/3)\n\n- **Layer 1 (tried and true):** verify signature on raw body, dedupe on `event.id`\n  with a uniqueness constraint, commit state before returning 200, return 2xx fast and\n  push slow side effects (email) out of the request, use parameterized queries\n  everywhere external strings touch SQL.\n- **Layer 2 (current search results):** same four pillars, with emphasis that a\n  non-idempotent handler produces duplicate emails/credits on Stripe retries, and that\n  a late retry should \"write yesterday's answer\" (idempotent assignment, which this\n  plan's user update already does). Sources: dev.to (whoffagents), theroadtoenterprise.com,\n  hookray.com Stripe webhook best practices 2026.\n- **Layer 3 (first principles):** the retained contracts already give this handler\n  idempotent update + idempotent mail. The remaining question is whose failure should\n  fail the webhook. A DB failure means the payment state is not recorded: fail loudly,\n  let Stripe retry. A mail failure after commit means the payment is recorded and a\n  notification is queued for retry by the existing procedure: the webhook has done its\n  job, and a 500 here makes Stripe replay an already-committed payment and trips the\n  payment-failure alert for a mail outage. Conventional \"let it propagate\" is wrong for\n  the mail leg specifically.\n\n## Step 0D. Alternatives (pending; one row asked at a time)\n\n### R1 — Handler routing: bypass vs. reuse `WebhookDispatcher`\n\nPrior answers checked: class name settled (`Webhooks::StripePaymentWebhookHandler`);\nplan explicitly leaves separate-vs-reuse open. No prior approval to reuse.\n\n| Commitment | Source/approval or pending | Current | A: register in WebhookDispatcher | B: bypass dispatcher (as written) | C: reuse dispatcher, no new class |\n|---|---|---|---|---|---|\n| Class name | settled | `Webhooks::StripePaymentWebhookHandler` | same | same | n/a (no class) |\n| Routing path | pending | dispatcher (prior handler) | dispatcher → new class | ingress → new class directly | dispatcher → inline module fn |\n| Guards unchanged | contract | yes | yes | yes | yes |\n| Feature flag | contract | existing flag | flag selects dispatcher target | flag selects ingress target | flag selects dispatcher target |\n| Handler identity in traces | contract | yes | yes | yes | yes |\n\n- **A) Register the new class as the dispatcher's target for `payment_intent.succeeded`.**\n  Effort S, risk low. Pros: one routing mechanism for all event types; the next handler\n  copies this pattern; flag flip is a one-line dispatcher table change. Cons: dispatcher\n  interface may impose a signature on the class; small coupling to existing module.\n- **B) Bypass the dispatcher (as written).** Effort S, risk medium. Pros: zero coupling\n  to dispatcher internals; matches plan text. Cons: two routing paths to reason about\n  during rollout and rollback; the \"clean namespace\" reason is already satisfied by the\n  class name; future handlers have two precedents.\n- **C) No new class; add orchestration inside the dispatcher module.** Effort S, risk\n  medium. Pros: smallest diff. Cons: contradicts the approved app-owned class name and\n  the motivation to move orchestration into application-owned code; dispatcher grows\n  business logic.\n\nRecommendation: A. Verification coverage: A and B both need a routing test (flag on →\nnew handler invoked; flag off → prior handler) if R4 approves tests.\n\n**R1 decision (D2): A approved.** Architecture section amended below.\n\n### R2 — User lookup: raw SQL fragment vs. bound parameter\n\nPrior answers checked: contracts say the adapter forwards the external string\nunchanged, no cast/escape/sanitize; IDs are opaque TEXT with punctuation and Unicode;\n\"a valid signature does not make it safe for SQL.\" No prior approval of raw SQL; the\nplan section is a proposal, not a contract. Threat: `metadata.user_id` is set when the\nPaymentIntent is created; anyone who can influence that metadata (client-side\nPaymentIntent creation, a compromised integration, a bug in the creating code) controls\na string that lands in SQL. The ownership guard compares identity, so a crafted string\nbound to its own PaymentIntent passes the guard and reaches the fragment.\n\n| Commitment | Source/approval or pending | Current | A: bound parameter / ORM finder | B: raw fragment (as written) | C: raw fragment + app-level escaping |\n|---|---|---|---|---|---|\n| Lookup input | contract | raw external string | same string, passed as a bind value | same string, interpolated | same string, escaped then interpolated |\n| ID format | contract (opaque TEXT) | no cast/validation | no cast; any nonempty string is a valid bind | any string is executable SQL text | escaping must be correct for every dialect quirk |\n| Unicode/punctuation | contract | must round-trip | driver handles | breaks or injects on `'`, `;`, `--` | brittle |\n| Trace fields | contract | DB client attaches user ID + event ID | unchanged | unchanged | unchanged |\n\n- **A) Bound parameter (`WHERE id = $1` / ORM `find_by(id: user_id)`).** Effort S\n  (one line), risk low. Pros: eliminates the injection class; Unicode/punctuation IDs\n  round-trip correctly; uses the shared DB client as every other lookup does. Cons:\n  none material; if the existing DB client only exposes a raw-fragment API, one small\n  helper is needed.\n- **B) Raw fragment (as written).** Effort S, risk high. Pros: matches plan text. Cons:\n  SQL injection via Stripe metadata; a legitimate user ID containing `'` breaks the\n  query and produces a DB exception → 500 → Stripe retries a poison event until it\n  gives up; contradicts the plan's own contract note.\n- **C) Escape in the handler, then interpolate.** Effort S, risk medium. Pros: keeps the\n  fragment shape. Cons: reimplements what the driver does, dialect-specific, the classic\n  \"almost right\" mitigation.\n\nOnly A is viable against the stated contracts; B and C are listed to show what is\nbeing rejected. Recommendation: A.\n\n**R2 decision (D3): A approved.** Database access section amended below.\n\n### R3 — Email leg: what happens when the receipt send fails after the payment commits\n\nPrior answers checked: contracts say the mail client rethrows unchanged, durably records\nthe failed attempt before rethrowing, uses a provider idempotency key per PaymentIntent,\nhas a 1s deadline raising `MailTimeout`; ingress returns 500 on any exception; dedup\nmarks completion only after the DB transaction commits; the runbook retries only the\nnotification and \"never replays the payment blindly.\" No prior approval of the\n\"no error handling\" text.\n\nTrace of the as-written path when the mail provider is down:\n\n```\nhandler: lookup ok → orders ok → update commits → mail send raises MailTimeout\n  → mail client records failed attempt (retry procedure now owns it)\n  → exception reaches ingress → log + HTTP 500 → \"failed webhook processing\" alert fires\n  → completion marker NOT recorded (handler did not return)\n  → Stripe retries (minutes → hours → days)\n      → lock → marker absent → handler re-runs → update assigns same values (idempotent)\n      → mail send again → fails again → 500 again → alert again\n  → meanwhile the notification retry procedure ALSO retries the same record\n  → provider key suppresses any duplicate send that does get through\n```\n\nResult: the payment is committed and safe, but on-call sees payment-failure alerts for\na mail outage, Stripe's dashboard shows the endpoint failing, the same receipt is\nretried through two independent channels, and the runbook's \"distinguish committed\npayments from failed notifications\" has to be done by hand on every alert.\n\nNecessary coupling: the DB update must commit before the send, and the send must not\nrun inside the DB transaction. Otherwise a mail failure rolls back the payment, or the\nper-user lock is held across a 1s external call inside an open transaction. This\nordering is part of every option below.\n\n| Commitment | Source/approval or pending | Current | A: rescue mail errors, return 200 | B: rethrow (as written) | C: enqueue send after commit |\n|---|---|---|---|---|---|\n| Update commits before send | pending (coupled) | unspecified | yes | yes | yes |\n| Mail exception classes handled | pending | none | `MailTimeout` + mail client's error class only; no catch-all | none | n/a (job owns it) |\n| HTTP result on mail failure | pending | 500 | 200 | 500 | 200 |\n| Stripe retries on mail failure | pending | yes | no | yes | no |\n| Notification retry owner | contract | retry procedure via recorded attempt | retry procedure (single owner) | retry procedure + Stripe (two owners) | job retries + retry procedure |\n| Handler outcome trace | contract | success/failure | adds `notification_failed` outcome with event/user/PI ids | failure (indistinguishable from DB failure at the wrapper) | `notification_enqueued` |\n| New infrastructure | pending | none | none | none | job queue + worker (may not exist) |\n| DB exceptions | contract | propagate → 500 | unchanged, still propagate | unchanged | unchanged |\n\n- **A) Commit, then send; rescue only the mail client's exception classes; record a\n  `notification_failed` outcome; return 200.** Effort S, risk low. Pros: payment alert\n  means payment failure; the existing dashboard/alert/runbook for failed notifications\n  becomes the single owner of the retry; no Stripe retry storm; matches the runbook's\n  \"retry only the notification.\" Cons: the handler now has one rescue block to test;\n  a bug in the rescue that swallows non-mail errors would be a silent failure, so the\n  rescue must be class-specific and covered by a test.\n- **B) Rethrow (as written).** Effort S, risk medium. Pros: no handler code for errors;\n  Stripe's retry gives a free second attempt. Cons: everything in the trace above;\n  every mail blip pages as a payment failure; two retry channels for one receipt.\n- **C) Enqueue the send as a background job after commit.** Effort M, risk medium.\n  Pros: webhook returns fastest; job retries are standard. Cons: needs a job system\n  and worker (not listed among retained contracts); moves the receipt off the\n  request path, a behavior change on latency; beyond HOLD SCOPE unless the app already\n  has a queue in this path.\n\nRecommendation: A. Completeness: A=9/10, B=3/10, C=10/10 (but adds infrastructure\noutside hold scope).\n",
            "savedAt": "2026-09-16T01:17:40.676Z",
            "savedPlanSha256": "2b80bd6d4c943f08a783bb7e9143ea9991906e7ec610bf569e0078cfa9afa953",
            "questionIssuedAt": "2026-09-16T01:17:54.759Z"
          }
        ]
      },
      {
        "attempt": "plan-ceo-review-1789521167380-U4p1F0",
        "case": "paired2",
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-8i30e6qg/gstack-paid-shard-hsb4Ye/tmp/gstack-e2e-plan-ceo-paired-zdiDMi/gstack-test-plan-ceo-paired.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing — Test Coverage\n\n## Existing coverage and test infrastructure retained\nThis changes unit tests only; processPayment() production behavior stays as-is.\nThe Stripe adapter suite already covers network timeouts, card declines (402),\nrate limits (429), and recovery when an initial 502 is followed by a successful\ncharge. Receipt-builder failure behavior has its own passing regression tests.\nThe payment test factory explicitly configures max_retries=1 and exposes the\nStripe mock call history. Its injected virtual sleeper records backoff without\nreal delays, so an exhausted 502 operation makes exactly two charge attempts.\nThese existing helpers and regression suites remain in use for this change.\n\n## Existing behavior retained\nA successful charge returns a receipt with chargeId copied from Stripe,\namountCents equal to the requested integer amount, and currency equal to\nthe requested currency. For a 1000-cent USD charge returning id ch_paid,\nthe receipt is { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }.\nOn repeated 502 responses, max_retries=1 means two total charge attempts\nseparated by one recorded 100 ms backoff, followed by PaymentUnavailable.\nThese contracts are already implemented; this plan adds their unit coverage.\n\n## Proposed tests\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id ch_paid, call\n   processPayment with amountCents=1000 and currency=USD, and assert only\n   that the returned receipt is truthy. This is the complete planned assertion.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment, and assert only that it rejects with PaymentUnavailable.\n   No assertion about the mock call history or virtual sleeper record\n   is planned for this test.",
        "captureSha256": "3959bcbcc612bab775abdf4b237a29f767745f55f36e6951eac7ff9212997d92",
        "calls": [
          {
            "call": {
              "sessionId": "862c587e-ada7-422f-95be-473e5d23b9b2",
              "toolUseId": "toolu_01Vr7BNdk6DSdArYsyoTmdQi",
              "questions": [
                {
                  "question": "D1 — How deep should the successful-charge test assert the receipt?\nProject/branch/task: main, PLAN.md test 1 (successful charge, ch_paid / 1000 USD).\nELI10: The plan spells out the exact receipt it expects ({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }) and then only checks that *something* came back. A receipt with the wrong amount, wrong currency, or a missing chargeId would still pass. That means the test says \"receipt contract is covered\" while covering nothing about the contract.\nStakes if we pick wrong: a regression in receipt field mapping (e.g. amountCents in dollars, currency lowercased, chargeId dropped) ships green; users get wrong receipts and the test that was supposed to catch it stays green.\nRecommendation: A because the plan already states the exact expected object; asserting it is one line and costs nothing extra.\nCompleteness: A=10/10, B=5/10, C=3/10\nNet: one `toEqual` line vs a test that documents a contract it doesn't enforce.",
                  "header": "D1 receipt",
                  "multiSelect": false,
                  "options": [
                    {
                      "label": "A) Deep-equal full receipt (recommended)",
                      "description": "✅ Fails on any wrong or missing chargeId, amountCents, or currency; the test enforces what PLAN.md line 21 promises. ✅ Same effort as truthy (human: ~1 min / CC: seconds); reuses existing factory and mock, no new helpers. ❌ toEqual rejects extra receipt fields, so adding a field later means updating this test (that is the point, but it is a maintenance touch)."
                    },
                    {
                      "label": "B) Assert chargeId only",
                      "description": "✅ Catches the most visible regression: chargeId not copied from Stripe. ✅ Tolerant of receipt shape growth without test edits. ❌ Misses amountCents and currency mapping bugs, which are the ones that cost real money on a receipt."
                    },
                    {
                      "label": "C) Keep truthy assertion as planned",
                      "description": "✅ Zero change to the plan text; smallest possible diff. ✅ Cannot break when the receipt shape changes. ❌ Passes for `{}`, for wrong amounts, for wrong currency; provides no coverage of the contract the plan says it covers."
                    }
                  ]
                }
              ],
              "answered": true,
              "failed": false,
              "answers": {
                "D1 — How deep should the successful-charge test assert the receipt?\nProject/branch/task: main, PLAN.md test 1 (successful charge, ch_paid / 1000 USD).\nELI10: The plan spells out the exact receipt it expects ({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }) and then only checks that *something* came back. A receipt with the wrong amount, wrong currency, or a missing chargeId would still pass. That means the test says \"receipt contract is covered\" while covering nothing about the contract.\nStakes if we pick wrong: a regression in receipt field mapping (e.g. amountCents in dollars, currency lowercased, chargeId dropped) ships green; users get wrong receipts and the test that was supposed to catch it stays green.\nRecommendation: A because the plan already states the exact expected object; asserting it is one line and costs nothing extra.\nCompleteness: A=10/10, B=5/10, C=3/10\nNet: one `toEqual` line vs a test that documents a contract it doesn't enforce.": "A) Deep-equal full receipt (recommended)"
              },
              "unansweredQuestionIndices": [],
              "answeredAt": "2026-09-16T01:15:23.258Z"
            },
            "savedPlan": "# Plan: Payment Processing — Test Coverage (CEO review, HOLD SCOPE)\n\nReviewed by /plan-ceo-review on 2026-09-16. Branch: main. Source plan: PLAN.md.\nMode: HOLD SCOPE (explicit user instruction). /office-hours skipped per user.\n\n## Context\n\nprocessPayment() has two documented contracts with no unit coverage at the\nprocessPayment layer:\n\n1. Successful charge returns `{ chargeId, amountCents, currency }` copied from\n   the Stripe response and the request.\n2. With `max_retries=1`, repeated 502s produce exactly two charge attempts,\n   one recorded 100 ms backoff, then rejection with `PaymentUnavailable`.\n\nThe Stripe adapter suite covers timeouts, 402, 429 and 502-then-success. It\ndoes not cover 502-then-502 exhaustion, and nothing asserts receipt field\nmapping at this layer. Production code is not changed. Only the existing\nprocessPayment suite gains tests, using its existing factory, Stripe mock\n(with exposed call history) and injected virtual sleeper.\n\n## Stated limits (retained)\n\n| Measure | Value | Source |\n|---|---|---|\n| Files changed | 1 (processPayment test file) | PLAN.md \"Proposed tests\" |\n| Production code changes | 0 | PLAN.md line 8, 28 |\n| New helpers / mocks | 0 (reuse factory, mock, sleeper) | PLAN.md lines 12-15 |\n| max_retries | 1 → 2 total attempts | PLAN.md lines 12-14, 22-23 |\n| Backoff | one recorded 100 ms | PLAN.md line 23 |\n| Receipt for 1000 USD / ch_paid | `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }` | PLAN.md line 21 |\n| Error class on exhaustion | `PaymentUnavailable` | PLAN.md line 23 |\n\nUnverified: the suite, factory, mock and sleeper are described in PLAN.md but\nare not present in this checkout. Their existence and API shape are taken\nfrom the plan and marked as unverified evidence in the ledger.\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (test author) | Test 1 verifies the receipt contract. Evidence: PLAN.md line 21 states exact expected receipt; PLAN.md line 32 asserts only truthiness. Coverage: none at this layer. | `expect(receipt).toBeTruthy()` | A) deep-equal full receipt; B) chargeId only; C) keep truthy | unresolved | pending |\n| D2 (test author) | Test 2 verifies retry exhaustion contract. Evidence: PLAN.md lines 22-23 state 2 attempts + one 100 ms backoff + PaymentUnavailable; PLAN.md lines 34-36 assert only rejection. Factory exposes call history and sleeper record (lines 12-14, unverified). | `rejects.toThrow(PaymentUnavailable)` only | A) rejection + call count 2 + sleeper [100]; B) rejection + call count 2; C) keep rejection only | unresolved | pending |\n\n## Step 0 evidence\n\n### 0A Premise\nRight problem: contracts exist in prose and in code but not in tests at the\nprocessPayment layer. Doing nothing leaves receipt mapping and retry policy\nregressions undetected until production. Pain is real, not hypothetical:\nthe adapter suite's 502-then-success case does not exercise exhaustion.\n\n### 0B Existing code leverage\nAll sub-problems map to existing code: suite, factory, Stripe mock, virtual\nsleeper. Nothing rebuilt. Nothing new to DRY.\n\n### 0C Dream state\n```\nCURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\ncontracts in prose, no     --->  2 tests, assert only      --->  every stated contract has a\ntests at this layer              truthy / rejects                test that fails when it breaks\n```\nAs written the plan moves partway: both planned assertions pass against a\nbroken implementation (see D1/D2 failure scenarios below).\n\n### 0G HOLD SCOPE checks\n- Complexity: 1 file, 0 new classes/services. Passes.\n- Minimum change: two tests is already the minimum. Nothing deferrable.\n- Stated invariants: \"this plan adds their unit coverage\" is the acceptance\n  criterion. Repairs to make the tests actually cover the contracts are in\n  scope; they are not scope expansion.\n\n### 0D comparisons\n\n#### D1 — Test 1 assertion depth\n\nFailure scenario for current plan: processPayment returns `{}` or\n`{ chargeId: undefined, amountCents: 100000, currency: \"usd\" }`; the test passes.\n\n| Option | Summary | Effort | Risk | Reuse | Coverage |\n|---|---|---|---|---|---|\n| A) Deep-equal full receipt | `expect(receipt).toEqual({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" })` | S | low | existing factory/mock | 10/10: all three fields |\n| B) chargeId only | `expect(receipt.chargeId).toBe(\"ch_paid\")` | S | medium | same | 5/10: misses amount/currency mapping |\n| C) Truthy (as planned) | `expect(receipt).toBeTruthy()` | S | high | same | 3/10: passes for any non-null value |\n\n```text\nCommitment              | Source/approval or pending | Current | A       | B       | C\nchargeId asserted       | PLAN.md line 21 / pending  | no      | yes     | yes     | no\namountCents asserted    | PLAN.md line 21 / pending  | no      | yes     | no      | no\ncurrency asserted       | PLAN.md line 21 / pending  | no      | yes     | no      | no\nextra fields rejected   | pending                    | no      | yes     | no      | no\nproduction code change  | PLAN.md line 8 (approved)  | 0       | 0       | 0       | 0\n```\n\n#### D2 — Test 2 verification depth\n\nFailure scenarios for current plan: (a) retry disabled, one attempt, still\nrejects PaymentUnavailable → passes; (b) retry loop with no backoff → passes;\n(c) third attempt falls off the end of the two arranged 502 responses and the\nmock returns undefined; whatever error that produces may still be wrapped\ninto PaymentUnavailable → passes.\n\n| Option | Summary | Effort | Risk | Reuse | Coverage |\n|---|---|---|---|---|---|\n| A) Rejection + attempts + backoff | assert rejects `PaymentUnavailable`, Stripe mock called exactly 2 times, sleeper record equals `[100]` | S | low | factory call history + sleeper (existing) | 10/10: whole stated contract |\n| B) Rejection + attempts | rejects + mock called exactly 2 times | S | medium | call history | 7/10: misses backoff |\n| C) Rejection only (as planned) | rejects `PaymentUnavailable` | S | high | none | 3/10: passes with 1 or N attempts, no backoff |\n\n```text\nCommitment                | Source/approval or pending | Current | A    | B    | C\nrejects PaymentUnavailable| PLAN.md line 23 / pending  | yes     | yes  | yes  | yes\nexactly 2 charge attempts | PLAN.md line 22 / pending  | no      | yes  | yes  | no\none 100 ms backoff record | PLAN.md line 23 / pending  | no      | yes  | no   | no\nproduction code change    | PLAN.md line 8 (approved)  | 0       | 0    | 0    | 0\n```\n\n## Proposed tests (working plan, pending D1/D2)\n\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id `ch_paid`, call\n   processPayment with amountCents=1000 and currency=USD. Assertion: **pending D1**.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment. Assertions: **pending D2**.\n\n## NOT in scope\n- Production changes to processPayment, retry policy, or receipt builder.\n- New mocks, helpers, or factory changes.\n- Adapter-level cases (timeouts, 402, 429, 502-then-success): already covered.\n",
            "savedAt": "2026-09-16T01:15:08.657Z",
            "savedPlanSha256": "12158b4ac8841714718bfbe828c776feeb1c2e63d90f34551bc550f2967c27c7",
            "questionIssuedAt": "2026-09-16T01:15:22.381Z"
          }
        ]
      },
      {
        "attempt": "plan-ceo-review-1789521357741-7XHXDl",
        "case": "paired2",
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-8i30e6qg/gstack-paid-shard-hsb4Ye/tmp/gstack-e2e-plan-ceo-paired-qDVNoZ/gstack-test-plan-ceo-paired.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing — Test Coverage\n\n## Existing coverage and test infrastructure retained\nThis changes unit tests only; processPayment() production behavior stays as-is.\nThe Stripe adapter suite already covers network timeouts, card declines (402),\nrate limits (429), and recovery when an initial 502 is followed by a successful\ncharge. Receipt-builder failure behavior has its own passing regression tests.\nThe payment test factory explicitly configures max_retries=1 and exposes the\nStripe mock call history. Its injected virtual sleeper records backoff without\nreal delays, so an exhausted 502 operation makes exactly two charge attempts.\nThese existing helpers and regression suites remain in use for this change.\n\n## Existing behavior retained\nA successful charge returns a receipt with chargeId copied from Stripe,\namountCents equal to the requested integer amount, and currency equal to\nthe requested currency. For a 1000-cent USD charge returning id ch_paid,\nthe receipt is { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }.\nOn repeated 502 responses, max_retries=1 means two total charge attempts\nseparated by one recorded 100 ms backoff, followed by PaymentUnavailable.\nThese contracts are already implemented; this plan adds their unit coverage.\n\n## Proposed tests\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id ch_paid, call\n   processPayment with amountCents=1000 and currency=USD, and assert only\n   that the returned receipt is truthy. This is the complete planned assertion.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment, and assert only that it rejects with PaymentUnavailable.\n   No assertion about the mock call history or virtual sleeper record\n   is planned for this test.",
        "captureSha256": "90dcab764e517cb28fa058e446121677f572b5641594d1d86bfe9228b5d0630d",
        "calls": [
          {
            "call": {
              "sessionId": "b043faea-5fb6-4ea2-bb8d-773712ed0db1",
              "toolUseId": "toolu_01CC8CaU6qGM8Xgr3bavxpSB",
              "questions": [
                {
                  "question": "D1 — Row T1: how much should the successful-charge test actually assert?\nProject/branch/task: payment test coverage plan on `main`, HOLD SCOPE review, two new unit tests only.\nELI10: The plan writes down the exact receipt a good charge must return ({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }) and then proposes a test that only checks \"we got something back\". An empty object would pass. The test exists to catch a broken receipt; right now it can't.\nStakes if we pick wrong: a regression that returns amount in dollars (10 instead of 1000) or the wrong currency ships green and a customer is charged or shown the wrong number.\nRecommendation: A because the plan already states the exact contract, deep equality is one line, and it uses no new infrastructure.\nCompleteness: A=10/10, B=5/10, C=3/10\nNet: same test, same arrange step; we're only choosing whether the assert line proves the contract or proves the function didn't throw.",
                  "header": "T1 assert",
                  "multiSelect": false,
                  "options": [
                    {
                      "label": "A) Full receipt equality (recommended)",
                      "description": "✅ Catches amount-unit, currency-case and chargeId mapping regressions in one assertion (human ~10 min / CC ~1 min)\n✅ Encodes the exact contract the plan itself documents; no new helpers or mocks\n❌ Deep equality fails if the receipt legitimately gains a field later (one-line update, and that is a contract change worth seeing)"
                    },
                    {
                      "label": "B) Assert chargeId only",
                      "description": "✅ Proves the Stripe id was actually copied into the receipt\n✅ Won't break if amount/currency fields change shape later\n❌ amountCents=10 or currency=\"usd\" regressions pass silently; half the documented contract stays untested"
                    },
                    {
                      "label": "C) Truthy only (as planned)",
                      "description": "✅ Cannot be brittle; matches the plan text exactly\n✅ Smallest possible assertion\n❌ `{}` passes; the test proves only that processPayment resolved, not that the receipt is right"
                    }
                  ]
                }
              ],
              "answered": true,
              "failed": false,
              "answers": {
                "D1 — Row T1: how much should the successful-charge test actually assert?\nProject/branch/task: payment test coverage plan on `main`, HOLD SCOPE review, two new unit tests only.\nELI10: The plan writes down the exact receipt a good charge must return ({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }) and then proposes a test that only checks \"we got something back\". An empty object would pass. The test exists to catch a broken receipt; right now it can't.\nStakes if we pick wrong: a regression that returns amount in dollars (10 instead of 1000) or the wrong currency ships green and a customer is charged or shown the wrong number.\nRecommendation: A because the plan already states the exact contract, deep equality is one line, and it uses no new infrastructure.\nCompleteness: A=10/10, B=5/10, C=3/10\nNet: same test, same arrange step; we're only choosing whether the assert line proves the contract or proves the function didn't throw.": "A) Full receipt equality (recommended)"
              },
              "unansweredQuestionIndices": [],
              "answeredAt": "2026-09-16T01:18:41.755Z"
            },
            "savedPlan": "# Plan: Payment Processing — Test Coverage (CEO review, HOLD SCOPE)\n\n## Context\n`processPayment()` already implements two contracts (successful-charge receipt\nshape; exhausted-502 retry then `PaymentUnavailable`) that have no unit\ncoverage in the processPayment suite. This plan adds two tests to that suite\nusing the existing payment test factory, Stripe mock and virtual sleeper.\nProduction code, other tests and test infrastructure are unchanged.\n\nReview mode: HOLD SCOPE (explicit user instruction). Reviewer: /plan-ceo-review,\n2026-09-16, branch `main`, base branch `main` (git-native fallback, no remote).\n\n## Stated limits (recorded, unchanged)\n| Measure | Value | Source |\n|---|---|---|\n| Files changed | 1 (processPayment suite) — estimate; suite path not in this checkout | PLAN.md §Proposed tests |\n| Tests added | 2 | PLAN.md §Proposed tests |\n| Production changes | 0 | PLAN.md §Existing coverage |\n| New helpers / mocks | 0 (reuse factory, mock, virtual sleeper) | PLAN.md §Existing coverage |\n| max_retries | 1 → exactly 2 charge attempts on exhausted 502 | PLAN.md §Existing coverage |\n| Backoff | one recorded 100 ms sleep between attempts | PLAN.md §Existing behavior |\n\n## Pre-review audit\n- Repo contains only `PLAN.md` and `CLAUDE.md` (1 commit, no remote, no stash,\n  no TODOS.md, no design doc, no handoff, no FIXME/TODO). The code the plan\n  describes is NOT in this checkout; every code-level claim below is\n  plan-stated and marked unverified.\n- Retrospective: no prior review cycles on this branch.\n- Frontend/UI scope: none (DESIGN_SCOPE not set).\n- Landscape (WebSearch; Aside unavailable): standard practice for retry tests is\n  inject a clock/sleeper and assert attempt count + requested delays. The\n  plan's factory already provides both hooks.\n\n## Existing coverage and test infrastructure retained (from PLAN.md)\nUnit tests only; processPayment() production behavior stays as-is. The Stripe\nadapter suite already covers network timeouts, card declines (402), rate\nlimits (429), and 502-then-success recovery. Receipt-builder failure behavior\nhas its own passing regression tests. The payment test factory configures\nmax_retries=1, exposes the Stripe mock call history, and injects a virtual\nsleeper that records backoff without real delays. All remain in use.\n\n## Existing behavior retained (from PLAN.md)\n- Success: receipt `{ chargeId: <stripe id>, amountCents: <requested>, currency: <requested> }`.\n  For 1000-cent USD with Stripe id `ch_paid`: `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }`.\n- Exhausted 502: max_retries=1 → two total charge attempts, one recorded\n  100 ms backoff between them, then rejects with `PaymentUnavailable`.\n\n## Step 0 evidence\n\n### 0A Premise\n- Right problem: yes. Documented contracts with zero unit coverage in the\n  owning suite is real, cheap-to-fix debt. No reframing is simpler.\n- Outcome: a regression in receipt mapping or retry policy fails CI in the\n  processPayment suite, not in production. The plan reaches this only if the\n  tests can actually detect a violated contract (see T1/T2 below).\n- Do nothing: the adapter suite catches transport-level regressions but not\n  a receipt-mapping bug (e.g. amount in dollars, lowercase currency) or a\n  retry-policy bug (0 or 5 retries) in processPayment. Pain is real.\n\n### 0B Existing code leverage\n| Sub-problem | Existing code (plan-stated, unverified) |\n|---|---|\n| Arrange Stripe responses | payment test factory + Stripe mock |\n| Observe attempts | factory-exposed mock call history |\n| Observe backoff without sleeping | injected virtual sleeper record |\n| Retry policy config | factory sets max_retries=1 |\nNothing is rebuilt. No overlap with the adapter suite: it covers\n502-then-success; this plan covers exhausted 502 at the processPayment layer.\n\n### 0C Dream state\n```\n  CURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\n  contracts documented,   --->    2 tests in owning suite   --->   every documented\n  0 unit tests in owning          (rigor decided in T1/T2)         processPayment contract\n  suite                                                            has an assertion that\n                                                                   fails when it breaks\n```\nMoves toward the ideal only if the tests assert the contracts; \"truthy\" and\n\"rejects\" alone move the coverage number, not the safety.\n\n### 0G HOLD SCOPE checks\n1. Complexity: 1 file, 0 new classes/services. Pass.\n2. Minimum change: two tests is already the minimum; nothing to defer.\n3. Invariants: PLAN.md §Existing behavior states the acceptance contracts.\n   The proposed assertions (§Proposed tests) do not verify them. Repairs\n   needed to meet stated invariants are in scope, but the plan explicitly\n   says the weak assertions are \"the complete planned assertion\", so\n   tightening them needs user approval (rows T1, T2), not silent amendment.\n\n## Decision ledger\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| S1 (user) | Review mode | — | HOLD SCOPE | approved | User message: \"review this plan thoroughly in HOLD SCOPE mode\" |\n| S2 (user) | Scope: 2 tests in existing processPayment suite; 0 production changes; 0 new tests; reuse factory/mock/sleeper | as stated | unchanged | approved | PLAN.md §Proposed tests + HOLD SCOPE; no question needed |\n| T1 (user / processPayment suite) | Test 1 success-path assertion depth. Evidence: §Existing behavior gives exact receipt; §Proposed tests 1 says \"assert only truthy\". Code unverified in this checkout. | truthy only | A full receipt equality; B chargeId only; C truthy as planned | unresolved | pending D1 |\n| T2 (user / processPayment suite) | Test 2 exhausted-502 assertion depth. Evidence: §Existing behavior gives 2 attempts + one 100 ms backoff + PaymentUnavailable; factory exposes call history and sleeper record. §Proposed tests 2 says reject only. | rejects PaymentUnavailable only | A reject + 2 attempts + [100 ms] recorded; B reject + 2 attempts; C reject only as planned | unresolved | pending D2 |\n\n## 0D comparisons\n\n### T1 — Test 1 assertion depth\n| Commitment | Source/approval or pending | Current | A | B | C |\n|---|---|---|---|---|---|\n| Arrange mock id ch_paid, call with 1000/USD | S2 approved | yes | yes | yes | yes |\n| Assert receipt truthy | plan | yes | implied | implied | yes |\n| Assert chargeId === \"ch_paid\" | pending T1 | no | yes | yes | no |\n| Assert amountCents === 1000 | pending T1 | no | yes | no | no |\n| Assert currency === \"USD\" | pending T1 | no | yes | no | no |\n| Assert no extra keys (deep equality) | pending T1 | no | yes | no | no |\n\n- **A) Full receipt equality** — `toEqual({ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" })`.\n  Effort S (human ~10 min / CC ~1 min). Risk low. Pros: catches amount-unit,\n  currency-case and id-mapping regressions; matches the contract the plan\n  itself writes down; zero new infrastructure. Cons: deep equality fails if\n  the receipt legitimately gains a field later (one-line fix, and that is a\n  contract change worth noticing). Coverage 10/10.\n- **B) chargeId only** — Effort S. Risk medium. Pros: proves mapping happened.\n  Cons: amount-in-dollars (10 vs 1000) and currency bugs pass. Coverage 5/10.\n- **C) Truthy only (as planned)** — Effort S. Risk high. Pros: cannot be\n  brittle. Cons: `{}` passes; the test proves only \"did not throw\". Coverage 3/10.\n\n### T2 — Test 2 assertion depth\n| Commitment | Source/approval or pending | Current | A | B | C |\n|---|---|---|---|---|---|\n| Arrange two consecutive 502s | S2 approved | yes | yes | yes | yes |\n| Assert rejects with PaymentUnavailable | plan | yes | yes | yes | yes |\n| Assert mock call history length === 2 | pending T2 | no | yes | yes | no |\n| Assert virtual sleeper record equals [100] | pending T2 | no | yes | no | no |\n| Assert both calls carry identical charge args | pending T2 | no | yes | no | no |\n\n- **A) Reject + attempts + backoff** — Effort S (human ~15 min / CC ~1 min).\n  Risk low. Pros: locks max_retries semantics (2 attempts, not 1 or 3); locks\n  the 100 ms backoff; uses hooks the factory already exposes; matches the\n  contract in §Existing behavior. Cons: changing backoff constant later\n  requires updating the test (that is the point). Coverage 10/10.\n- **B) Reject + attempts, no sleeper** — Effort S. Risk medium. Pros: catches\n  retry-count bugs. Cons: backoff 0 ms (hot loop against Stripe) passes. 7/10.\n- **C) Reject only (as planned)** — Effort S. Risk high. Pros: none beyond\n  minimal text. Cons: 0 retries passes, 5 retries passes, 0 ms backoff passes;\n  the \"exactly two attempts\" contract in the plan is untested. 4/10.\n\n## Proposed tests (working plan; T1/T2 pending)\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n1. Successful charge — assertion depth per T1.\n2. Repeated 502 — assertion depth per T2.\n\n## NOT in scope\n- Production changes to processPayment or retry policy.\n- New tests beyond the two above (adapter suite already covers timeouts,\n  402, 429, 502-then-success; receipt-builder failures have their own suite).\n- New helpers, mocks or timer infrastructure.\n",
            "savedAt": "2026-09-16T01:18:28.852Z",
            "savedPlanSha256": "692ab94ed8442a3986ab9f7bee05b7561d5b4fd011508b294280cb0ec7dbe3d1",
            "questionIssuedAt": "2026-09-16T01:18:40.953Z"
          }
        ]
      }
    ],
    "mixedSetupReview": {
      "sessionId": "c3dbd34c-9232-405a-b492-46faabd4b22e",
      "toolUseId": "toolu_01B1cwEQAyHqkXYAFeKL6pFD",
      "questions": [
        {
          "question": "D1 (ledger R1) — Should the new handler bypass `WebhookDispatcher` or register through it?\nProject/branch/task: payment webhook plan on `main`, HOLD SCOPE CEO review.\nELI10: Today one dispatcher hands Stripe events to handlers. The plan builds a second front door for the new `Webhooks::StripePaymentWebhookHandler` so it \"has its own namespace.\" But a namespace is just the class's name; you get it either way. The question is whether to keep one front door or maintain two. The retained contract says the handler must run inside the signature, dedup and lock guards; where those guards are wired relative to the dispatcher is not verifiable from this repo.\nStakes if we pick wrong: with a bypass, if any guard is attached to the dispatcher path, the new handler silently loses it (duplicate payment processing or unsigned events reaching the DB). With registration, worst case is learning the dispatcher's registration API.\nRecommendation: A because one dispatch path keeps the guards by construction and matches \"engineer enough, avoid unnecessary complexity\"; the settled class name already gives the namespace separation.\nNote: options differ in kind, not coverage — no completeness score.\nNet: one front door you already trust vs. a second one you must re-prove is guarded.",
          "header": "Dispatch",
          "multiSelect": false,
          "options": [
            {
              "label": "A) Register via dispatcher (recommended)",
              "description": "New `Webhooks::StripePaymentWebhookHandler` class registered as the dispatcher target for payment_intent.succeeded (human ~2h / CC ~10min). ✅ Guards apply by construction if they wrap the dispatcher; still verify wiring in hour 1. ✅ One dispatch path to maintain; matches the 12-month ideal of all handlers app-owned behind one dispatcher. ❌ Must confirm the dispatcher registration API accepts the new class; small coupling to dispatcher internals."
            },
            {
              "label": "B) Standalone bypass (as written)",
              "description": "Keep the plan: new class wired directly, dispatcher untouched (human ~4h / CC ~15min). ✅ Zero coupling to dispatcher internals or its registration contract. ✅ Namespace-clean class, independently deployable. ❌ Two dispatch paths forever; if any retained guard is attached via the dispatcher, the bypass drops it silently. ❌ Must independently prove signature/dedup/lock coverage for the new path."
            },
            {
              "label": "C) Fold into dispatcher, no new class",
              "description": "Implement the orchestration inside WebhookDispatcher (human ~1h / CC ~5min). ✅ Smallest diff; single code path. ✅ No registration API question at all. ❌ Contradicts the approved motivation (app-owned handler class) and the settled class name. ❌ Grows the dispatcher into a payment-logic module, hurting future handler separation."
            }
          ]
        },
        {
          "question": "Cross-project learnings — gstack can search learnings from your other projects on this machine to find patterns that might apply here. This stays local (no data leaves your machine). Recommended for solo developers. Skip if you work on multiple client codebases where cross-contamination would be a concern. Enable it?",
          "header": "Learnings",
          "multiSelect": false,
          "options": [
            {
              "label": "A) Enable cross-project (recommended)",
              "description": "✅ Reviews on this machine reuse pitfalls and patterns found in your other repos. ✅ Local-only config flag, reversible with one gstack-config command. ❌ Learnings from unrelated client codebases could surface here if you consult across clients."
            },
            {
              "label": "B) Project-scoped only",
              "description": "✅ Hard boundary between codebases; nothing from other projects is read. ✅ Safest for multi-client work. ❌ Every new project starts cold; repeated mistakes across repos are not caught."
            }
          ]
        }
      ],
      "answered": true,
      "failed": false,
      "answers": {
        "D1 (ledger R1) — Should the new handler bypass `WebhookDispatcher` or register through it?\nProject/branch/task: payment webhook plan on `main`, HOLD SCOPE CEO review.\nELI10: Today one dispatcher hands Stripe events to handlers. The plan builds a second front door for the new `Webhooks::StripePaymentWebhookHandler` so it \"has its own namespace.\" But a namespace is just the class's name; you get it either way. The question is whether to keep one front door or maintain two. The retained contract says the handler must run inside the signature, dedup and lock guards; where those guards are wired relative to the dispatcher is not verifiable from this repo.\nStakes if we pick wrong: with a bypass, if any guard is attached to the dispatcher path, the new handler silently loses it (duplicate payment processing or unsigned events reaching the DB). With registration, worst case is learning the dispatcher's registration API.\nRecommendation: A because one dispatch path keeps the guards by construction and matches \"engineer enough, avoid unnecessary complexity\"; the settled class name already gives the namespace separation.\nNote: options differ in kind, not coverage — no completeness score.\nNet: one front door you already trust vs. a second one you must re-prove is guarded.": "A) Register via dispatcher (recommended)",
        "Cross-project learnings — gstack can search learnings from your other projects on this machine to find patterns that might apply here. This stays local (no data leaves your machine). Recommended for solo developers. Skip if you work on multiple client codebases where cross-contamination would be a concern. Enable it?": "A) Enable cross-project (recommended)"
      },
      "unansweredQuestionIndices": [],
      "answeredAt": "2026-09-16T01:23:37.074Z"
    },
    "notice": "Complete captured public decisions and observed pre-ask reports. Actual first/retry failures stay failed; replay grants no paid credit."
  },
  "current8bf": {
    "source": "8bf418507594fc9d1377223a0a7acebab3529147",
    "description": "Complete observed native calls, ACKs and pre-ask owned reports; no retrospective paid credit.",
    "rows": {
      "pending": {
        "call": {
          "sessionId": "9046c270-7c23-426d-bc14-1ca582bebf1f",
          "toolUseId": "toolu_01UrzTcrn8Ga8MFBwPet85iy",
          "questions": [
            {
              "question": "D2 (ledger R1) — Should the new handler register with the existing `WebhookDispatcher`, or bypass it with its own dispatch path?\nProject/branch/task: Payment Processing Integration plan on `main`, HOLD SCOPE review, row R1 (Architecture).\nELI10: Your app already has a front door (`WebhookDispatcher`) that decides which handler runs for a Stripe event. The plan wants the new handler to skip that door and use its own, for \"clean namespace separation\". But the class name `Webhooks::StripePaymentWebhookHandler` already gives you the namespace. The open question is whether a second door is worth owning, given that the plan's promise that the handler \"runs inside the unchanged guards\" may depend on going through the first door. There is no code in this repo to verify how the guards are wired, so that is an unknown either way.\nStakes if we pick wrong: a bypass that misses a guard wire-up means an event reaches the handler without dedup/lock/handler-identity tracing, and nobody notices until a duplicate charge email or a missing trace shows up in an incident.\nRecommendation: A because it is the smaller diff, reuses the proven flag/trace/dispatch path, and the only stated benefit of bypassing is already delivered by the class name.\nCompleteness: A=9/10, B=6/10\nPros / cons:\nA) Register the new class with the existing WebhookDispatcher (recommended)\n  ✅ Inherits the dispatch, feature-flag selection and handler-identity tracing the prior handler already proved in production\n  ✅ Smallest change: one class plus one registration entry; nothing to re-verify about guard ordering\n  ❌ Keeps a code dependency on the shared dispatcher module (the contracts say it stays available anyway)\nB) Bypass WebhookDispatcher with a parallel dispatch path (as written)\n  ✅ Fully independent code path with no coupling to the shared dispatcher\n  ✅ Namespace separation is explicit at the routing layer, not only in the class name\n  ❌ Duplicates routing and flag selection; whether ingress guards and trace identity are wired through the dispatcher is unknown, so \"runs inside unchanged guards\" needs a code audit before it can be trusted\nNet: one proven door vs. two doors where the second one's safety is unverified; the namespace goal is met either way.",
              "header": "Dispatch",
              "multiSelect": false,
              "options": [
                {
                  "label": "Register with WebhookDispatcher (recommended)",
                  "description": "Add the new class and register it with the existing dispatcher; feature flag selects it."
                },
                {
                  "label": "Bypass with own dispatch path",
                  "description": "Keep the plan as written; add a task to audit guard/trace wiring on the new path."
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D2 (ledger R1) — Should the new handler register with the existing `WebhookDispatcher`, or bypass it with its own dispatch path?\nProject/branch/task: Payment Processing Integration plan on `main`, HOLD SCOPE review, row R1 (Architecture).\nELI10: Your app already has a front door (`WebhookDispatcher`) that decides which handler runs for a Stripe event. The plan wants the new handler to skip that door and use its own, for \"clean namespace separation\". But the class name `Webhooks::StripePaymentWebhookHandler` already gives you the namespace. The open question is whether a second door is worth owning, given that the plan's promise that the handler \"runs inside the unchanged guards\" may depend on going through the first door. There is no code in this repo to verify how the guards are wired, so that is an unknown either way.\nStakes if we pick wrong: a bypass that misses a guard wire-up means an event reaches the handler without dedup/lock/handler-identity tracing, and nobody notices until a duplicate charge email or a missing trace shows up in an incident.\nRecommendation: A because it is the smaller diff, reuses the proven flag/trace/dispatch path, and the only stated benefit of bypassing is already delivered by the class name.\nCompleteness: A=9/10, B=6/10\nPros / cons:\nA) Register the new class with the existing WebhookDispatcher (recommended)\n  ✅ Inherits the dispatch, feature-flag selection and handler-identity tracing the prior handler already proved in production\n  ✅ Smallest change: one class plus one registration entry; nothing to re-verify about guard ordering\n  ❌ Keeps a code dependency on the shared dispatcher module (the contracts say it stays available anyway)\nB) Bypass WebhookDispatcher with a parallel dispatch path (as written)\n  ✅ Fully independent code path with no coupling to the shared dispatcher\n  ✅ Namespace separation is explicit at the routing layer, not only in the class name\n  ❌ Duplicates routing and flag selection; whether ingress guards and trace identity are wired through the dispatcher is unknown, so \"runs inside unchanged guards\" needs a code audit before it can be trusted\nNet: one proven door vs. two doors where the second one's safety is unverified; the namespace goal is met either way.": "Register with WebhookDispatcher (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T02:41:38.566Z"
        },
        "priorCalls": [
          {
            "sessionId": "9046c270-7c23-426d-bc14-1ca582bebf1f",
            "toolUseId": "toolu_01Q1kSxHLkRNjYeG4hXESGyN",
            "questions": [
              {
                "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on `main`, about to run the CEO plan review of PLAN.md.\nELI10: gstack skills work best when the project's CLAUDE.md tells Claude which skill to reach for (bugs → /investigate, scope → /plan-ceo-review, etc.). This is a one-time onboarding prompt per project. Nothing about the plan review changes either way.\nStakes if we pick wrong: Low. Without routing rules you invoke skills manually; with them, Claude auto-routes matching requests. Reversible via one config flag.\nRecommendation: A because auto-routing saves you remembering skill names, and it is a small appended section.\nNote: options differ in kind, not coverage — no completeness score.\nPros / cons:\nA) Add routing rules to CLAUDE.md (recommended)\n  ✅ Requests like \"why is this broken\" auto-route to the right skill without you naming it\n  ✅ Teammates who clone the repo get the same routing behavior from the committed file\n  ❌ Adds ~20 lines to CLAUDE.md and a commit; in plan mode the edit must wait until the review finishes\nB) No thanks, I'll invoke skills manually\n  ✅ CLAUDE.md stays untouched; nothing committed to this fixture repo\n  ✅ You keep full explicit control over when a skill runs\n  ❌ Auto-routing stays off for this project until you flip the config flag back\nNet: convenience of auto-routing vs. keeping the repo file untouched; low stakes either way.",
                "header": "Routing",
                "multiSelect": false,
                "options": [
                  {
                    "label": "Add routing rules to CLAUDE.md (recommended)",
                    "description": "Append the skill routing section and commit it (deferred until plan mode exits)."
                  },
                  {
                    "label": "No thanks, I'll invoke skills manually",
                    "description": "Set routing_declined=true; re-enable later via gstack-config."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-count fixture on `main`, about to run the CEO plan review of PLAN.md.\nELI10: gstack skills work best when the project's CLAUDE.md tells Claude which skill to reach for (bugs → /investigate, scope → /plan-ceo-review, etc.). This is a one-time onboarding prompt per project. Nothing about the plan review changes either way.\nStakes if we pick wrong: Low. Without routing rules you invoke skills manually; with them, Claude auto-routes matching requests. Reversible via one config flag.\nRecommendation: A because auto-routing saves you remembering skill names, and it is a small appended section.\nNote: options differ in kind, not coverage — no completeness score.\nPros / cons:\nA) Add routing rules to CLAUDE.md (recommended)\n  ✅ Requests like \"why is this broken\" auto-route to the right skill without you naming it\n  ✅ Teammates who clone the repo get the same routing behavior from the committed file\n  ❌ Adds ~20 lines to CLAUDE.md and a commit; in plan mode the edit must wait until the review finishes\nB) No thanks, I'll invoke skills manually\n  ✅ CLAUDE.md stays untouched; nothing committed to this fixture repo\n  ✅ You keep full explicit control over when a skill runs\n  ❌ Auto-routing stays off for this project until you flip the config flag back\nNet: convenience of auto-routing vs. keeping the repo file untouched; low stakes either way.": "Add routing rules to CLAUDE.md (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-16T02:37:34.413Z"
          }
        ],
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-n8xtkbdm/gstack-paid-shard-89ET9r/tmp/gstack-e2e-plan-ceo-s0UNbH/gstack-test-plan-ceo.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing Integration\n\n## Existing contracts retained\nThe approved motivation is to move payment orchestration out of the prior\nlibrary-adapter handler into application-owned code while retaining the\nexisting payment and receipt product behavior. The shared dispatcher remains\navailable; the proposed bypass below is still an architectural choice to review.\nThe existing ingress middleware verifies the Stripe signature against the\nraw request body and rejects invalid signatures before invoking handlers.\nThe existing ingress forwards only `payment_intent.succeeded` events to\nthis handler; other Stripe event types are acknowledged without invoking it.\nThe existing payload adapter exposes `event.data.object.metadata.user_id`\nas `request.params.userId`. This params object is the parsed body-data map,\nnot URL query/path parameters; all users share one webhook URL.\nThe adapter acknowledges missing, nil, or empty user_id metadata with\nHTTP 200 and an event-correlated warning before invoking this handler.\nFor every nonempty external string it performs no SQL-format validation.\nThe adapter forwards that external string unchanged. It does not cast,\nescape, or SQL-sanitize it; a valid signature does not make it safe for SQL.\nUser IDs are opaque TEXT values, including punctuation and Unicode. The\nlookup has no integer/UUID cast or ID-format restriction; every nonempty\nstring is a valid identifier representation.\nAn existing ingress ownership guard checks the PaymentIntent ID against\nits stored opaque user-ID binding before invoking the handler. A mismatch\nis acknowledged with HTTP 200 and an event-correlated warning. This is an\nidentity comparison, not SQL-format validation; the adapter still forwards\nthe original string unchanged.\nThe existing webhook event guard deduplicates deliveries by Stripe event ID,\nand an existing per-user lock serializes payment updates.\nThe event guard acquires the existing per-user lock before checking the\ncommitted completion marker, and rechecks after any lock wait. It holds\nthat lock through the handler and completion bookkeeping; an overlapping\ncompleted duplicate does not invoke the handler.\nThe new handler runs inside those unchanged guards; this plan does not\nreplace signature verification, event deduplication, or update locking.\nThe existing user update assigns payment_status=paid and the payment intent\nID; it does not increment a balance or counter. Repeating the same payment\nintent assigns the same values, independently of the event-ID guard.\nThe existing lookup-result guard acknowledges unknown/deleted users with\nHTTP 200, logs the event, and stops before user updates or email fan-out.\nThe retained recipient-policy helper treats a nil or empty email address as\nskipped_missing_address: payment processing continues normally, and no mail\nclient call is attempted. It persists an event/user/PaymentIntent-correlated\nskip record, emits a structured warning, and increments the existing counter.\nThe existing notification runbook already covers that skip result: correct\nthe account address, then retry only its recorded notification using the\nsame PaymentIntent idempotency key. It never replays the payment for this case.\nThat recipient policy does not catch failures from sends to nonempty addresses;\nthe shared mail client still rethrows those exceptions to this handler.\nAccount deletion uses the same per-user lock. The handler holds it from\nlookup through update and inline email, so deletion either precedes lookup\n(the existing unknown/deleted-user path) or follows the handler; it cannot\nremove the user between lookup and update.\nThe ingress wrapper already logs event IDs, outcomes, and durations, with\nalerts for failed webhook processing. Those controls remain in place.\nThe existing DB and mail clients attach the adapter user ID and event ID\nto outcome traces, including update success and email delivery success or\nfailure. These shared clients rethrow exceptions unchanged; tracing does\nnot rescue email errors or change the inline email call below.\nThe shared mail client also publishes its delivery failure rate to the\nexisting dashboard and tested on-call alert, including caught exceptions.\nThe existing incident runbook uses the correlated DB and mail outcomes to\ndistinguish committed payments from failed notifications. It directs on-call\nto check provider status and retry only the failed notification through the\nexisting notification retry procedure, never replay the payment blindly.\nDB lookup/update exceptions propagate to that ingress wrapper, which logs\nthe failure and returns HTTP 500 so Stripe retries the event. The existing\nevent-ID dedup guard records completion only after the database transaction\ncommits; failed or rolled-back database attempts remain retryable.\nThe deployment already has a handler feature flag and a documented, tested\nrollback to the prior handler; this change uses that existing rollout path.\nThat documented manual rollout checklist already requires a staging\npayment-event replay for this handler and verification of the user update,\nemail delivery, and correlated outcome trace before enabling it broadly.\nThis is manual deployment verification, not automated handler regression\ncoverage; no new automated tests are planned in the Tests section below.\nThe existing notification contract sends one payment receipt per PaymentIntent,\nincluding a summary of the user orders. With zero orders it still sends one\nreceipt with an empty order summary; the order loop is data loading, never\none email or payment update per order. These product semantics are retained.\nThe shared mail client already derives a provider idempotency key from that\nPaymentIntent ID. The provider durably suppresses duplicate successful sends\nfor the same key across process crashes, webhook retries, and manual retries.\nBefore rethrowing a failed or timed-out send, that client durably records the\nnotification attempt for the existing retry procedure. The dashboard and\non-call alert already monitor failed-notification age and backlog after an\noutage clears, as well as failure rate; the runbook retries those records.\nThe existing mail-client deadline is one second, enforced by cancellation\nof the provider request with no inline retries. It raises MailTimeout on\nexpiry. The retained DB/ingress deadlines bound their combined work to two\nseconds, leaving headroom inside the existing ten-second webhook deadline.\nNeither deadlines nor retry records catch the mail exception for this handler;\nthe shared client still rethrows it to the inline caller described below.\nEvery existing event-correlated outcome trace includes the active handler\nidentity (prior or new), so rollout attribution is already available.\nIf a separate handler class is retained, its already-approved name is\n`Webhooks::StripePaymentWebhookHandler` in the application-owned namespace,\nnever the Stripe library namespace. This naming choice is settled; whether\nto add a separate implementation or reuse WebhookDispatcher remains open.\n\n## Architecture\nWe're adding a new `StripePaymentWebhookHandler` class that will handle Stripe webhooks.\nThis bypasses the existing `WebhookDispatcher` module — we want a clean\nnamespace separation.\n\n## Database access\nThe new endpoint reads `request.params.userId` directly into a raw SQL\nfragment for the lookup query.\n\n## Webhook fan-out\nOn payment success we update the user record AND fire a notification email.\nBoth happen inline; no error handling on the email leg.\n\n## Tests\nNone planned. We'll rely on the existing integration suite catching regressions.\n\n## Performance\nEach webhook lookup hits the database for the user, then fetches each\norder in a loop.",
        "savedPlan": "# Plan: Payment Processing Integration — CEO Review (HOLD SCOPE)\n\nReviewed by /plan-ceo-review on 2026-09-16. Branch: `main`. Base branch: `main` (no remote; git-native fallback).\nSource plan: `PLAN.md` in the fixture repo. This file is the working plan: it carries the\noriginal plan's current values, the decision ledger, and (at the end) the review report.\n\nStorage policy: this path was requested by the user and is the one permitted plan document.\nOther artifacts (decision log, learnings, telemetry) go to `~/.gstack/` writers as permitted in plan mode.\nApproved-but-deferred onboarding action: D1 (append gstack skill routing rules to CLAUDE.md and\ncommit) — cannot run in plan mode; execute after plan mode exits.\n\n---\n\n## Context\n\nThe approved motivation: move payment orchestration out of the prior library-adapter handler into\napplication-owned code while retaining existing payment and receipt behavior. The plan proposes a\nnew `Webhooks::StripePaymentWebhookHandler` (name settled) that bypasses `WebhookDispatcher`, reads\n`request.params.userId` into a raw SQL fragment, updates the user and sends the receipt inline with\nno error handling on the email leg, has no tests, and loads orders in a loop.\n\nThe \"Existing contracts retained\" section of PLAN.md is treated as the source of truth for what the\ningress already guarantees (signature, event dedup, per-user lock, ownership guard, missing-user\nguard, recipient policy, mail idempotency key, durable notification retry records, 1s mail / 2s DB /\n10s webhook deadlines, feature flag + rollback, handler identity in traces).\n\n## Pre-review system audit\n\n- Repo: plan-only fixture. Files: `PLAN.md`, `CLAUDE.md`. One commit `1181fbe Seed review plan`. No stash, no TODOS.md, no TODO/FIXME markers, no architecture docs, no code to grep.\n- Nothing in flight. No prior review cycles, refactors or reverts (retrospective check: nothing to compare).\n- Design doc: none (user instructed skipping /office-hours). Handoff note: none. Brain digests: cold. Prior learnings: 0.\n- `REPO_MODE: unknown` → flag, do not fix. `SESSION_KIND: interactive`, `QUESTION_TUNING: false`, `CHECKPOINT_MODE: explicit`.\n- Frontend/UI scope: NONE. Section 11 (design) is a no-UI skip.\n- Cross-project learnings config: unset; onboarding prompt deferred (user asked to proceed directly to the review).\n\n## Landscape check\n\n- **Layer 1 (tried and true):** verify signature on the raw body; dedup on `event.id` with a DB unique constraint (INSERT … ON CONFLICT, never SELECT-then-INSERT); parameterized SQL only; respond inside Stripe's 10s window; make side effects idempotent because delivery is at-least-once for up to 72h.\n- **Layer 2 (search, 2026):** same guidance plus \"verify, enqueue to a background job, return 200 immediately\". Sources: hooklistener.com/learn/stripe-webhooks-implementation, hookray.com/blog/stripe-webhook-best-practices-2026, appycodes.dev/blog/stripe-webhooks-end-to-end-2026, snowinch.com/en/blog/stripe-webhook-idempotency-duplicates. Treated as untrusted input; cited, not followed.\n- **Layer 3 (first principles):** the retained ingress already covers signature, dedup, locking, mail idempotency and durable retry records, and the retained deadlines (1s mail + 2s DB) fit in 10s, so the \"enqueue everything\" advice is not required for this plan. The two things the guards do NOT cover are exactly what the plan's own sections introduce: (a) an unsanitized external string interpolated into SQL, and (b) a mail exception rethrown into the payment path. Separately, the stated reason for bypassing `WebhookDispatcher` (\"clean namespace separation\") is already delivered by the approved `Webhooks::` class name, so the bypass has no remaining justification of its own.\n\n## Step 0A. Premise Challenge\n\n1. **Right problem?** Yes. Moving orchestration into application-owned code is a legitimate ownership move and the plan explicitly keeps product behavior fixed. No simpler framing exists that still leaves the library-adapter handler in place.\n2. **Outcome?** Business outcome: same payments and receipts, code the team owns and can test/evolve. The plan reaches it directly except where its own sections regress the contracts it lists (raw SQL, unhandled mail leg, no tests, N+1 inside a 2s budget).\n3. **Do nothing?** The prior handler keeps working behind the feature flag. Pain is real but not urgent; there is no wartime forcing function, so speed should not be bought by skipping the invariant repairs.\n\n## Step 0B. Existing Code Leverage\n\n| Sub-problem | Existing code (per PLAN.md contracts) | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware, raw body | Yes (unchanged) |\n| Event routing (only `payment_intent.succeeded`) | ingress filter | Yes |\n| Event dedup + per-user lock | event guard + lock; completion after commit | Yes |\n| Ownership guard (PI ↔ user binding) | ingress guard | Yes |\n| Missing/empty user_id | adapter acks 200 + warning | Yes |\n| Unknown/deleted user | lookup-result guard | Yes |\n| Handler registration/dispatch | `WebhookDispatcher` (shared, available) | **No — proposed bypass (R1)** |\n| User lookup by opaque TEXT id | existing lookup (no cast) | **Partially — plan re-implements with raw SQL fragment (R2)** |\n| User update (status=paid, PI id) | existing user update, idempotent assignment | Yes |\n| Recipient policy (nil/empty email) | retained helper, skip record + counter | Yes |\n| Mail send, idempotency key, retry record, 1s deadline | shared mail client | Yes, but exceptions rethrown to handler unhandled (R3) |\n| Tracing, dashboards, alerts, runbooks | existing DB/mail clients + ingress wrapper | Yes |\n| Order summary load | unspecified; plan loops per order (R5) | Unknown helper; mark unknown |\n| Regression coverage | manual staging replay only | **No automated tests (R4)** |\n\nRebuilding: the only rebuild is the dispatcher bypass. The plan does not explain why a separate dispatch path beats registering the new class with the existing dispatcher.\n\n## Step 0C. Dream State Mapping\n\n```\n  CURRENT STATE                      THIS PLAN                          12-MONTH IDEAL\n  Library-adapter handler owns       New app-owned handler class,       All Stripe event handlers are\n  payment orchestration; ingress     same product behavior; bypasses    app-owned, registered through\n  guards + mail client already       dispatcher; raw SQL lookup;        one dispatcher, parameterized\n  idempotent/observable.             mail errors unhandled; no tests;   data access, named error\n                                     N+1 order load.                    handling, unit+integration\n                                                                        tests per handler, batched\n                                                                        loads, flag-based rollout.\n```\nDirection: the handler move points toward the ideal. The bypass, raw SQL, unhandled mail leg, missing tests and N+1 point away from it; each is repairable inside scope.\n\n---\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (user) | gstack onboarding: skill routing rules in CLAUDE.md | none | append routing section + commit | approved | AskUserQuestion D1 answer \"Add routing rules\"; deferred until plan mode exits |\n| MODE (user) | review mode | — | HOLD SCOPE | approved | user request text: \"review this plan thoroughly in HOLD SCOPE mode\"; explicit, no question asked |\n| R1 (plan author) | Architecture: handler registration. Contract: name `Webhooks::StripePaymentWebhookHandler` settled; \"whether to add a separate implementation or reuse WebhookDispatcher remains open\" (PLAN.md L100-103, L105-108). Guards live in ingress; whether dispatcher registration is on the guard path: **unknown** | bypass `WebhookDispatcher` | see R1 options | pending | — |\n| R2 (plan author) | Database access. Contract: user_id is opaque TEXT, forwarded unchanged, \"a valid signature does not make it safe for SQL\" (L21-26); plan interpolates it into a raw SQL fragment (L111-112) | raw SQL fragment from `request.params.userId` | see R2 options | pending | — |\n| R3 (plan author) | Webhook fan-out error handling. Contract: mail client rethrows MailTimeout and send errors to this handler after durably recording the attempt (L52-53, L88-97); ingress turns exceptions into HTTP 500 + Stripe retry (L70-73); plan: \"no error handling on the email leg\" (L116) | mail exceptions propagate to ingress → 500 → Stripe retries | see R3 options | pending | — |\n| R4 (plan author) | Tests. Contract: rollout checklist is manual staging replay, \"not automated handler regression coverage\" (L76-80); plan: \"None planned\" (L119) | no automated tests | see R4 options | pending | — |\n| R5 (plan author) | Performance. Contract: DB/ingress combined budget 2s (L94-95); one receipt with order summary, loop is data loading (L81-84); plan: fetch each order in a loop (L122-123) | per-order fetch loop (N+1) | see R5 options | pending | — |\n\n### R1 — Handler registration: bypass vs. register with `WebhookDispatcher`\n\nCommitment table (Current vs. offered options):\n\n```text\nCommitment                         | Source/approval or pending | Current                | A: register w/ dispatcher | B: bypass, own dispatch path\nClass name Webhooks::Stripe…Handler| settled (L100-103)         | same                   | same                      | same\nRuns inside ingress guards         | contract (L38-39)          | asserted               | inherits dispatcher path  | must be re-verified: unknown\nHandler identity in traces         | contract (L98-99)          | asserted               | inherits                  | must be re-wired if dispatcher sets it\nFeature flag / rollback path       | contract (L74-75)          | asserted               | flag selects handler      | flag must also select routing\nNamespace separation               | motivation (L107-108)      | via class name         | via class name            | via class name + separate path\n```\n\nOptions:\n- **A) Register the new class with the existing `WebhookDispatcher`** — S effort, low risk. ✅ Reuses the dispatch/flag/trace path the prior handler already proved. ✅ Smallest diff: one class + one registration line. ❌ Keeps a dependency on the dispatcher module (which the contracts say remains available anyway).\n- **B) Bypass the dispatcher with a parallel dispatch path (as written)** — M effort, medium risk. ✅ Fully independent code path. ❌ Duplicates routing and flag selection; whether ingress guards and handler-identity tracing are wired through the dispatcher is unknown, so the \"runs inside unchanged guards\" claim cannot be trusted without a code check. ❌ Its only stated benefit (namespace) is already delivered by the class name.\n- C (rewrite the dispatcher): not offered; unrelated work in HOLD SCOPE.\n\n### R2 — User lookup SQL\n\n```text\nCommitment                         | Source/approval or pending | Current                     | A: existing lookup / bound param | B: keep raw fragment\nAccepts any nonempty TEXT id       | contract (L24-26)          | yes                         | yes                              | yes\nNo cast / format restriction       | contract (L24-26)          | yes                         | yes                              | yes\nSQL-injection safe                 | contract (L21-23)          | NO                          | yes (bind parameter)             | NO\nUnknown user → guard path, 200     | contract (L43-44)          | asserted                    | unchanged                        | unchanged\n```\n\nOptions:\n- **A) Use the existing user lookup (or a bound-parameter query) for `userId`** — S effort, low risk. ✅ Closes the injection hole the plan itself names; opaque TEXT semantics preserved because a bind parameter never interprets the value. ✅ Same behavior for punctuation/Unicode ids. ❌ None material; if the existing lookup helper does not exist, a parameterized query is a few lines.\n- **B) Keep the raw SQL fragment (as written)** — S effort, high risk. ✅ No change. ❌ Any user who sets `metadata.user_id` to a SQL payload before paying gets that payload executed with a valid Stripe signature; the ownership guard compares identity but does not sanitize. Not viable under the plan's own contracts.\n\n### R3 — Mail leg failure handling\n\n```text\nCommitment                              | Source/approval or pending | Current (as written)             | A: rescue named mail errors after commit | B: propagate (as written)\nPayment update committed on mail failure | contract L70-73 (500 on exception) | depends: if email runs inside the DB txn, rollback; else commits — UNKNOWN | committed; email is outside/after the txn | unknown\nStripe retry on mail failure             | contract L70-73            | yes (500)                        | no (200 ack)                             | yes\nNotification retried                     | contract L88-91            | via retry record AND Stripe redelivery | via existing retry record + runbook | double path\nFailed-webhook alert fires               | contract L58-59            | yes, for a mail-only failure     | no; mail failure-rate alert fires instead (L64-65) | yes\nError names                              | contract L92-93            | MailTimeout + client send errors  | rescue exactly those classes, no catch-all | none\nDedup completion recorded                | contract L72-73            | unknown when handler raises after commit | yes                                     | unknown\n```\n\nOptions:\n- **A) Rescue the named mail exceptions (`MailTimeout` + the mail client's send error class) after the user update commits; rely on the client's durable retry record, structured trace and failure-rate alert; ack 200** — S effort, low risk. ✅ A mail-provider outage stays a notification incident, not a payment-processing incident; no Stripe retry storm against the mail provider for up to 72h. ✅ Uses the retry record and runbook the contracts already describe. ❌ Handler must guarantee the email call runs after the transaction commits (if it is inside the txn today, ordering must change). ❌ A rescue that swallows more than the named classes would hide real bugs; must be class-specific.\n- **B) Propagate (as written)** — S effort, medium/high risk. ✅ Zero handler code. ❌ Every mail failure returns 500, fires the failed-webhook alert, and makes Stripe redeliver; if the email sits inside the DB transaction, the paid status rolls back and a customer who paid shows unpaid until mail recovers. ❌ Two retry paths (Stripe + notification record) for one send.\n- C (move email to a post-commit background job): not offered in HOLD SCOPE (changes the inline contract); listed under NOT in scope as a candidate for a later plan.\n\n### R4 — Automated regression coverage\n\n```text\nCommitment                         | Source/approval or pending | Current             | A: handler unit + integration tests | B: existing suite / manual replay only\nNew handler has automated coverage  | preference: well-tested code | none              | yes                                | none\nManual staging replay still required| contract L76-78            | yes                 | yes                                | yes\nPaths covered                        | pending                    | —                   | happy, nil/empty id (adapter guard), unknown user, SQL-ish and Unicode ids, zero orders, many orders, mail success, MailTimeout, mail send error, duplicate event, deletion race | none\n```\n\nOptions:\n- **A) Add automated tests for the new handler** (unit + one integration path through ingress with the flag on) — M effort (human: ~1 day / CC: ~20 min), low risk. ✅ Locks the retained contracts as executable assertions; catches SQL-string ids and the mail failure ordering before staging. ✅ Makes the feature-flag rollout a real safety net instead of a hope. ❌ Adds test files and fixtures to maintain.\n- **B) None (as written)** — S effort, high risk. ✅ Nothing to write. ❌ The plan itself says the existing check is manual replay, \"not automated handler regression coverage\", so \"the integration suite catches regressions\" has no evidence behind it.\n\n### R5 — Order summary load\n\n```text\nCommitment                         | Source/approval or pending | Current (loop)      | A: single batched query        | B: keep loop\nOne receipt per PaymentIntent      | contract L81-84            | yes                 | yes                            | yes\nZero orders → empty summary        | contract L82-83            | yes                 | yes                            | yes\nFits in 2s DB budget for any user  | contract L94-95            | NO for large N      | yes                            | NO\n```\n\nOptions:\n- **A) Load the user's orders with one query (e.g. `WHERE user_id = ?`), then summarize in memory** — S effort, low risk. ✅ Latency flat in order count; a power user with hundreds of orders no longer pushes the handler past the 2s budget into a 500 + endless Stripe retry. ✅ Same summary output, same one-email contract. ❌ Very large order histories may need a bounded/paged summary (flag, not required now).\n- **B) Per-order fetch loop (as written)** — S effort, medium/high risk. ✅ No change. ❌ N+1 inside a 2s deadline: the failure is deterministic per user, so retries never succeed and that user's payment never flips to paid.\n\n---\n\n## Working plan (current values; amended only by recorded approvals)\n\n### Existing contracts retained\n(As in PLAN.md L7–103; unchanged. Referenced by line in the ledger.)\n\n### Architecture\nCurrent: new `Webhooks::StripePaymentWebhookHandler` bypasses `WebhookDispatcher`. **R1 pending.**\n\n### Database access\nCurrent: `request.params.userId` read into a raw SQL fragment for the lookup. **R2 pending.**\n\n### Webhook fan-out\nCurrent: update user record and send receipt inline; no error handling on the email leg. **R3 pending.**\n\n### Tests\nCurrent: none planned. **R4 pending.**\n\n### Performance\nCurrent: user lookup, then per-order fetch loop. **R5 pending.**\n\n### NOT in scope\n- Moving the receipt email to a background job (changes the inline contract; candidate for a later plan).\n- Rewriting `WebhookDispatcher`.\n\n## Mode provenance\nExplicit user choice: \"review this plan thoroughly in HOLD SCOPE mode\" → HOLD SCOPE. No mode question asked; no question log.\n",
        "savedPlanSha256": "c3f058393d5c4b504ed75b83986d58b42786bfe26b5e0bb5aa7a1aabf9e9a55e",
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        "questionIssuedAt": "2026-09-16T02:41:38.426Z",
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      },
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          "toolUseId": "toolu_01HCebofA83FHLumxDHUbZr3",
          "questions": [
            {
              "question": "D2 — R1: How strong should the success-path assertion be?\nProject/branch/task: gstack-plan-count-qaWW58 on main; test 1 of the processPayment coverage plan.\nELI10: The plan says the receipt for a 1000-cent USD charge must be exactly { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }, but the test only checks that some receipt came back. A receipt of {} or one with amountCents: 10 passes. That means a billing bug in field mapping ships green.\nStakes if we pick wrong: Too weak and the test is a false guarantee; the receipt-mapping contract stays uncovered while looking covered.\nRecommendation: C because the factory already exposes mock history and the sleeper, so the extra lines cost seconds and pin the whole success contract.\nCompleteness: A=3/10, B=7/10, C=10/10\nNet: three extra assertion lines vs. a test that cannot detect the regressions it exists to catch. Human: ~10 min / CC: ~1 min for C.",
              "header": "R1 success",
              "multiSelect": false,
              "options": [
                {
                  "label": "C) Deep-equal + call/sleeper checks (recommended)",
                  "description": "✅ Pins chargeId, amountCents and currency exactly as the contract states them. ✅ Asserts exactly one Stripe charge call with amount 1000 / USD and an empty sleeper record, so an accidental retry on success is caught. ❌ Depends on the factory's mock-history and sleeper API names, which this checkout cannot verify."
                },
                {
                  "label": "B) Deep-equal receipt only",
                  "description": "✅ Catches any wrong or missing receipt field, the most likely billing regression. ✅ Uses only the returned value; no dependency on factory introspection helpers. ❌ Does not detect an extra retry or wrong arguments passed to Stripe on the happy path."
                },
                {
                  "label": "A) Keep truthy-only (as planned)",
                  "description": "✅ Matches PLAN.md exactly; zero deviation from the written plan. ✅ Smallest possible test body. ❌ Passes against {} or a mis-mapped amount; the stated contract remains untested."
                }
              ]
            },
            {
              "question": "D3 — Enable cross-project learnings search on this machine?\nProject/branch/task: gstack first-time config prompt; unrelated to plan content.\nELI10: gstack can search learnings recorded from your other local projects to spot patterns that apply here. Stays local; no data leaves the machine. Good for solo developers, risky if you work across multiple client codebases.\nStakes if we pick wrong: Low; toggle any time with gstack-config set cross_project_learnings.\nRecommendation: A because this looks like a solo sandbox and there are no learnings yet either way.\nNote: options differ in kind, not coverage — no completeness score.\nNet: broader recall later vs. strict per-project isolation.",
              "header": "Learnings",
              "multiSelect": false,
              "options": [
                {
                  "label": "Enable cross-project (recommended)",
                  "description": "✅ Future reviews can reuse pitfalls learned on your other projects. ✅ Local only; nothing is uploaded anywhere. ❌ Not appropriate if projects belong to different clients."
                },
                {
                  "label": "Keep project-scoped",
                  "description": "✅ Strict isolation between codebases on this machine. ✅ Nothing changes about how this review runs today. ❌ Learnings from other projects never surface here."
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D2 — R1: How strong should the success-path assertion be?\nProject/branch/task: gstack-plan-count-qaWW58 on main; test 1 of the processPayment coverage plan.\nELI10: The plan says the receipt for a 1000-cent USD charge must be exactly { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }, but the test only checks that some receipt came back. A receipt of {} or one with amountCents: 10 passes. That means a billing bug in field mapping ships green.\nStakes if we pick wrong: Too weak and the test is a false guarantee; the receipt-mapping contract stays uncovered while looking covered.\nRecommendation: C because the factory already exposes mock history and the sleeper, so the extra lines cost seconds and pin the whole success contract.\nCompleteness: A=3/10, B=7/10, C=10/10\nNet: three extra assertion lines vs. a test that cannot detect the regressions it exists to catch. Human: ~10 min / CC: ~1 min for C.": "C) Deep-equal + call/sleeper checks (recommended)",
            "D3 — Enable cross-project learnings search on this machine?\nProject/branch/task: gstack first-time config prompt; unrelated to plan content.\nELI10: gstack can search learnings recorded from your other local projects to spot patterns that apply here. Stays local; no data leaves the machine. Good for solo developers, risky if you work across multiple client codebases.\nStakes if we pick wrong: Low; toggle any time with gstack-config set cross_project_learnings.\nRecommendation: A because this looks like a solo sandbox and there are no learnings yet either way.\nNote: options differ in kind, not coverage — no completeness score.\nNet: broader recall later vs. strict per-project isolation.": "Enable cross-project (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T02:40:16.289Z"
        },
        "priorCalls": [
          {
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            "toolUseId": "toolu_01Qh1LES4RoHN4ktfrqTKVhy",
            "questions": [
              {
                "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-qaWW58 on main; one-time onboarding prompt before the CEO review.\nELI10: gstack works best when your project's CLAUDE.md includes skill routing rules, so requests like \"review this diff\" or \"ship it\" automatically route to the matching skill. Without them you invoke skills by name each time.\nStakes if we pick wrong: Low either way; you can re-enable later with gstack-config. In plan mode the CLAUDE.md edit and commit would be deferred until plan mode exits.\nRecommendation: A because routing rules make skills discoverable with zero ongoing cost.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience of automatic routing vs. keeping CLAUDE.md untouched.",
                "header": "Routing",
                "multiSelect": false,
                "options": [
                  {
                    "label": "Add routing rules (recommended)",
                    "description": "✅ Requests auto-route to /review, /ship, /investigate etc. without remembering names. ✅ One committed section, visible to teammates. ❌ Adds ~15 lines to CLAUDE.md and a commit; deferred until plan mode exits."
                  },
                  {
                    "label": "No thanks, invoke manually",
                    "description": "✅ CLAUDE.md stays exactly as-is with no extra commit. ✅ Sets routing_declined so this prompt never recurs. ❌ You must type skill names yourself every time."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-qaWW58 on main; one-time onboarding prompt before the CEO review.\nELI10: gstack works best when your project's CLAUDE.md includes skill routing rules, so requests like \"review this diff\" or \"ship it\" automatically route to the matching skill. Without them you invoke skills by name each time.\nStakes if we pick wrong: Low either way; you can re-enable later with gstack-config. In plan mode the CLAUDE.md edit and commit would be deferred until plan mode exits.\nRecommendation: A because routing rules make skills discoverable with zero ongoing cost.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience of automatic routing vs. keeping CLAUDE.md untouched.": "Add routing rules (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-16T02:37:30.412Z"
          }
        ],
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-n8xtkbdm/gstack-paid-shard-89ET9r/tmp/gstack-e2e-plan-ceo-paired-3WkJkB/gstack-test-plan-ceo-paired.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing — Test Coverage\n\n## Existing coverage and test infrastructure retained\nThis changes unit tests only; processPayment() production behavior stays as-is.\nThe Stripe adapter suite already covers network timeouts, card declines (402),\nrate limits (429), and recovery when an initial 502 is followed by a successful\ncharge. Receipt-builder failure behavior has its own passing regression tests.\nThe payment test factory explicitly configures max_retries=1 and exposes the\nStripe mock call history. Its injected virtual sleeper records backoff without\nreal delays, so an exhausted 502 operation makes exactly two charge attempts.\nThese existing helpers and regression suites remain in use for this change.\n\n## Existing behavior retained\nA successful charge returns a receipt with chargeId copied from Stripe,\namountCents equal to the requested integer amount, and currency equal to\nthe requested currency. For a 1000-cent USD charge returning id ch_paid,\nthe receipt is { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }.\nOn repeated 502 responses, max_retries=1 means two total charge attempts\nseparated by one recorded 100 ms backoff, followed by PaymentUnavailable.\nThese contracts are already implemented; this plan adds their unit coverage.\n\n## Proposed tests\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id ch_paid, call\n   processPayment with amountCents=1000 and currency=USD, and assert only\n   that the returned receipt is truthy. This is the complete planned assertion.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment, and assert only that it rejects with PaymentUnavailable.\n   No assertion about the mock call history or virtual sleeper record\n   is planned for this test.",
        "savedPlan": "# Plan: Payment Processing — Test Coverage (CEO review, HOLD SCOPE)\n\nReviewed by /plan-ceo-review on 2026-09-16. Branch: main. Source plan: PLAN.md.\nMode: HOLD SCOPE (explicit user instruction: \"review this plan thoroughly in HOLD SCOPE mode\").\n\n## Context\n\nThe source plan adds two unit tests to the existing `processPayment` suite. It\nstates two production contracts as already implemented and says \"this plan adds\ntheir unit coverage\":\n\n1. Success: a 1000-cent USD charge returning Stripe id `ch_paid` yields the receipt\n   `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }`.\n2. Exhausted retry: two consecutive 502s with `max_retries=1` mean exactly two\n   charge attempts, one recorded 100 ms backoff, then rejection with\n   `PaymentUnavailable`.\n\nThe plan's stated assertions are weaker than the contracts it says it covers:\ntest 1 asserts only that the receipt is truthy; test 2 asserts only that the call\nrejects with `PaymentUnavailable`. The factory already exposes the Stripe mock call\nhistory and a virtual sleeper record; neither is asserted.\n\n## Pre-review system audit\n\n- Repo contents: `CLAUDE.md`, `PLAN.md` only. No `processPayment` source or test\n  suite is present in this checkout, so the factory (`max_retries=1`), Stripe mock\n  call history and virtual sleeper are taken as stated in the plan and are\n  **unverified here**. Implementer must confirm their exact API names on the real\n  codebase before writing assertions.\n- Git: single commit (`7780144 Seed review plan`), clean tree, no stash, no\n  remote. Base branch: `main` (git-native fallback).\n- No TODOS.md, no design doc, no CEO handoff note, no brain digests, no prior\n  learnings (LEARNINGS: 0).\n- Retrospective check: no prior review cycles on this branch.\n- Frontend/UI scope: none. DESIGN_SCOPE not set; Section 11 will be a no-UI skip.\n- Landscape (Layer 1/2/3): retry tests should assert attempt count and recorded\n  delays via an injected clock; the plan already owns that machinery (virtual\n  sleeper, mock history) and only omits the assertions. No eureka: conventional\n  wisdom and first principles agree.\n\n## Stated limits (kept)\n\n| Measure | Value | Source |\n|---|---|---|\n| Production code changed | 0 files | PLAN.md \"production code stay as-is\" |\n| Other tests changed | 0 | PLAN.md \"Other tests ... stay as-is\" |\n| New tests | 2, in existing processPayment suite | PLAN.md \"Proposed tests\" |\n| Files touched | 1 (the existing processPayment spec file; name unverified) | inferred |\n| max_retries | 1 (two total attempts) | PLAN.md factory config |\n| Backoff | one recorded 100 ms | PLAN.md contract |\n| Receipt shape | `{ chargeId, amountCents, currency }` | PLAN.md contract |\n\n## Step 0 — Nuclear scope challenge\n\n### 0A. Premise challenge\n1. Right problem? Yes in intent: two named contracts (receipt shape; retry\n   exhaustion) have no direct unit coverage. Wrong in execution: the planned\n   assertions do not test those contracts. A `processPayment` that returned `{}`,\n   or one that made 1 or 5 attempts with zero backoff, passes both tests.\n2. Outcome: catch regressions in receipt construction and retry policy before\n   they reach billing. Truthy/rejects-only assertions solve the proxy problem\n   (\"a test exists\") rather than the real one (\"the contract is enforced\").\n3. Do nothing: the Stripe adapter suite covers 402/429/timeout and 502-then-success,\n   but no test pins the exhausted-502 path or the receipt field mapping. A\n   silently mis-mapped `amountCents` (e.g. dollars vs cents) is a real billing\n   bug this suite would not catch. Pain is real.\n\n### 0B. Existing code leverage\n| Sub-problem | Existing code (per plan) | Used by plan? |\n|---|---|---|\n| Deterministic Stripe responses | payment test factory + Stripe mock | yes |\n| Count charge attempts | mock call history exposed by factory | **no** |\n| Verify backoff without real delay | injected virtual sleeper record | **no** |\n| Receipt field mapping | receipt builder (has its own failure regression tests) | success-path mapping not asserted |\n\nNothing is rebuilt. The gap is unused, already-built observability in the test\nfactory.\n\n### 0C. Dream state\n```\n  CURRENT STATE                    THIS PLAN                    12-MONTH IDEAL\n  Adapter suite covers 402/429/    +2 tests in processPayment   Every stated contract in\n  timeout/502-then-success.        suite: success path and      processPayment has one test\n  No test pins exhausted-502       exhausted-502 path.          that fails if any field of the\n  or success receipt mapping.      As written: existence-only   contract changes; retry policy\n                                   assertions.                  (attempts, delays) is pinned.\n```\nThe plan moves toward the ideal only if the assertions match the contracts.\n\n### 0D. Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (implementer of test 1) | Success receipt `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }`; factory + Stripe mock (unverified here) | assert receipt truthy only | A) keep truthy; B) deep-equal receipt; C) deep-equal receipt + exactly 1 charge call with requested amount/currency + empty sleeper record | unresolved | — |\n| R2 (implementer of test 2) | Exhausted 502: 2 attempts, one 100 ms backoff, rejects `PaymentUnavailable`; mock history + virtual sleeper (unverified here) | assert rejects `PaymentUnavailable` only | A) keep rejects-only; B) rejects + exactly 2 charge attempts; C) rejects + 2 attempts + sleeper record equals `[100]` | unresolved | — |\n\nCommitment comparison, R1:\n```\nCommitment                         | Source/approval or pending | Current | A       | B       | C\nReceipt is truthy                  | PLAN.md test 1             | yes     | yes     | implied | implied\nReceipt deep-equals contract       | PLAN.md contract           | no      | no      | yes     | yes\nExactly one Stripe charge call     | PLAN.md contract (implied) | no      | no      | no      | yes\nCharge args = 1000 / USD           | PLAN.md contract (implied) | no      | no      | no      | yes\nSleeper record empty on success    | PLAN.md contract (implied) | no      | no      | no      | yes\nProduction code / other tests      | PLAN.md limits             | as-is   | as-is   | as-is   | as-is\n```\n\nCommitment comparison, R2:\n```\nCommitment                         | Source/approval or pending | Current | A       | B       | C\nRejects with PaymentUnavailable    | PLAN.md test 2             | yes     | yes     | yes     | yes\nExactly two charge attempts        | PLAN.md contract           | no      | no      | yes     | yes\nSleeper record equals [100]        | PLAN.md contract           | no      | no      | no      | yes\nProduction code / other tests      | PLAN.md limits             | as-is   | as-is   | as-is   | as-is\n```\n\nR1 and R2 are independently selectable; they share the factory but not a decision.\n\n### 0E. Mode\nHOLD SCOPE, explicit user instruction. No question asked; no mode log.\nPlanned changed files: 1 (estimate; spec file name unverified).\n\n## Proposed tests (working plan; pending R1/R2)\n\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge — pending R1.\n2. Repeated 502 — pending R2.\n\n## NOT in scope\n- Production code changes to `processPayment`, the Stripe adapter or receipt builder.\n- Changes to existing adapter or receipt-builder regression tests.\n\n## Deferred (outside this review)\n- D1: add gstack skill routing rules to CLAUDE.md and commit — approved, deferred\n  until plan mode exits (plan mode forbids the edit and commit).\n",
        "savedPlanSha256": "da245726e508f9db23226f4ca4a5986d44f867683c51adec5c9bd363c2db3c46",
        "savedAtMs": 1789526384748.5208,
        "questionIssuedAt": "2026-09-16T02:40:07.629Z",
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          "questions": [
            {
              "question": "D3 (ledger row R1) — What should the successful-charge test assert?\nProject/branch/task: main; HOLD SCOPE review of the two-test processPayment coverage plan.\nELI10: The plan spells out the exact receipt a 1000-cent USD charge must produce: chargeId \"ch_paid\", amountCents 1000, currency \"USD\". The proposed test only checks that *something* came back. If a refactor returned {} or copied the wrong amount, that test stays green. Asserting the full receipt is the same test, same file, one more line.\nStakes if we pick wrong: with truthy-only, a receipt-shape regression in payment code ships with a passing suite; customers see wrong amounts or missing charge ids on receipts.\nRecommendation: A because the factory already exposes the mock call history, so checking both the receipt and the single outbound charge call costs one extra assertion and closes the loop on what was sent to Stripe.\nCompleteness: A=10/10, B=8/10, C=2/10\nNet: same scope, same test; the only trade is whether the test can actually fail.",
              "header": "R1 receipt",
              "multiSelect": false,
              "options": [
                {
                  "label": "A: Receipt equality + one charge call (recommended)",
                  "description": "✅ Fails if chargeId, amountCents or currency drift, or if the mock is called twice or with wrong args. ✅ Reuses the factory's existing call-history hook; no new helpers. ❌ Two assertions instead of one; slightly more to read."
                },
                {
                  "label": "B: Receipt equality only",
                  "description": "✅ Guards all three receipt fields named in the plan's contract. ✅ Single toEqual assertion, minimal diff. ❌ Does not check what was sent to Stripe (amount/currency on the outbound call) or that only one call was made."
                },
                {
                  "label": "C: Keep truthy-only (as planned)",
                  "description": "✅ Matches PLAN.md literally: \"This is the complete planned assertion.\" ✅ Smallest possible test. ❌ Cannot fail when the receipt contract breaks; it verifies presence, not correctness."
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D3 (ledger row R1) — What should the successful-charge test assert?\nProject/branch/task: main; HOLD SCOPE review of the two-test processPayment coverage plan.\nELI10: The plan spells out the exact receipt a 1000-cent USD charge must produce: chargeId \"ch_paid\", amountCents 1000, currency \"USD\". The proposed test only checks that *something* came back. If a refactor returned {} or copied the wrong amount, that test stays green. Asserting the full receipt is the same test, same file, one more line.\nStakes if we pick wrong: with truthy-only, a receipt-shape regression in payment code ships with a passing suite; customers see wrong amounts or missing charge ids on receipts.\nRecommendation: A because the factory already exposes the mock call history, so checking both the receipt and the single outbound charge call costs one extra assertion and closes the loop on what was sent to Stripe.\nCompleteness: A=10/10, B=8/10, C=2/10\nNet: same scope, same test; the only trade is whether the test can actually fail.": "A: Receipt equality + one charge call (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T02:43:56.452Z"
        },
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            "questions": [
              {
                "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-review fixture on main, about to run /plan-ceo-review in HOLD SCOPE mode.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs → /investigate, scope → /plan-ceo-review, etc.). Without it you invoke each skill by hand. This is a one-time prompt per project.\nStakes if we pick wrong: mild either way; you can flip it later with gstack-config.\nRecommendation: A because routing rules make future sessions pick the right skill automatically. Note: plan mode is active, so the CLAUDE.md edit and commit would happen after this review exits plan mode, not now.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience now vs. a manual skill invocation habit.",
                "header": "Routing",
                "multiSelect": false,
                "options": [
                  {
                    "label": "Add routing rules (recommended)",
                    "description": "✅ Future requests auto-route to the right gstack skill without you remembering names. ✅ One small appended section, committed once. ❌ Adds ~15 lines to CLAUDE.md in this fixture repo; edit deferred until plan mode exits."
                  },
                  {
                    "label": "No thanks, invoke manually",
                    "description": "✅ CLAUDE.md stays exactly as-is for this fixture. ✅ Nothing to commit. ❌ You type /skill names yourself every time; re-enable later via gstack-config set routing_declined false."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: plan-review fixture on main, about to run /plan-ceo-review in HOLD SCOPE mode.\nELI10: gstack skills work best when CLAUDE.md tells Claude which skill to reach for (bugs → /investigate, scope → /plan-ceo-review, etc.). Without it you invoke each skill by hand. This is a one-time prompt per project.\nStakes if we pick wrong: mild either way; you can flip it later with gstack-config.\nRecommendation: A because routing rules make future sessions pick the right skill automatically. Note: plan mode is active, so the CLAUDE.md edit and commit would happen after this review exits plan mode, not now.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience now vs. a manual skill invocation habit.": "Add routing rules (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-16T02:40:52.260Z"
          },
          {
            "sessionId": "1a35ff67-aded-41c9-a15a-f4323c86aea4",
            "toolUseId": "toolu_01N7UAnpYktyz2pMneftKvZm",
            "questions": [
              {
                "question": "D2 — Let gstack search learnings from your other projects on this machine?\nProject/branch/task: plan-review fixture on main; first-run gstack config prompt.\nELI10: gstack records small lessons per project (command quirks, pitfalls). Cross-project mode lets this review also read lessons saved from your other repos on this machine. Everything stays local; nothing leaves the box.\nStakes if we pick wrong: low; flip anytime with gstack-config set cross_project_learnings true/false.\nRecommendation: A because for a solo developer more prior context makes reviews sharper at zero privacy cost. Skip if you work across client codebases where cross-contamination matters.\nNote: options differ in kind, not coverage — no completeness score.\nNet: broader recall vs. strict per-project isolation.",
                "header": "Learnings",
                "multiSelect": false,
                "options": [
                  {
                    "label": "Enable cross-project (recommended)",
                    "description": "✅ Reviews can apply lessons learned in your other local repos to this one. ✅ Local only; no network, no data leaves the machine. ❌ If you juggle multiple client codebases, unrelated learnings could bleed across them."
                  },
                  {
                    "label": "Keep project-scoped only",
                    "description": "✅ Strict isolation: only this project's own learnings are ever consulted. ✅ Safe default for consultants with separate client repos. ❌ Each new project starts cold and relearns the same quirks."
                  }
                ]
              }
            ],
            "answered": true,
            "failed": false,
            "answers": {
              "D2 — Let gstack search learnings from your other projects on this machine?\nProject/branch/task: plan-review fixture on main; first-run gstack config prompt.\nELI10: gstack records small lessons per project (command quirks, pitfalls). Cross-project mode lets this review also read lessons saved from your other repos on this machine. Everything stays local; nothing leaves the box.\nStakes if we pick wrong: low; flip anytime with gstack-config set cross_project_learnings true/false.\nRecommendation: A because for a solo developer more prior context makes reviews sharper at zero privacy cost. Skip if you work across client codebases where cross-contamination matters.\nNote: options differ in kind, not coverage — no completeness score.\nNet: broader recall vs. strict per-project isolation.": "Enable cross-project (recommended)"
            },
            "unansweredQuestionIndices": [],
            "answeredAt": "2026-09-16T02:41:52.435Z"
          }
        ],
        "seed": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/gstack-owned-display-n8xtkbdm/gstack-paid-shard-89ET9r/tmp/gstack-e2e-plan-ceo-paired-f1dt48/gstack-test-plan-ceo-paired.md (use Edit/Write to that exact path).\nProceed directly to the requested CEO review; skip the optional /office-hours prerequisite.\nFinish after this CEO review; I will handle subsequent reviews manually.\n\n# Plan: Payment Processing — Test Coverage\n\n## Existing coverage and test infrastructure retained\nThis changes unit tests only; processPayment() production behavior stays as-is.\nThe Stripe adapter suite already covers network timeouts, card declines (402),\nrate limits (429), and recovery when an initial 502 is followed by a successful\ncharge. Receipt-builder failure behavior has its own passing regression tests.\nThe payment test factory explicitly configures max_retries=1 and exposes the\nStripe mock call history. Its injected virtual sleeper records backoff without\nreal delays, so an exhausted 502 operation makes exactly two charge attempts.\nThese existing helpers and regression suites remain in use for this change.\n\n## Existing behavior retained\nA successful charge returns a receipt with chargeId copied from Stripe,\namountCents equal to the requested integer amount, and currency equal to\nthe requested currency. For a 1000-cent USD charge returning id ch_paid,\nthe receipt is { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }.\nOn repeated 502 responses, max_retries=1 means two total charge attempts\nseparated by one recorded 100 ms backoff, followed by PaymentUnavailable.\nThese contracts are already implemented; this plan adds their unit coverage.\n\n## Proposed tests\nAdd two tests in the existing processPayment suite using its current factory,\nStripe mock and virtual sleeper. Other tests and production code stay as-is.\n\n1. Successful charge: arrange the Stripe mock to return id ch_paid, call\n   processPayment with amountCents=1000 and currency=USD, and assert only\n   that the returned receipt is truthy. This is the complete planned assertion.\n2. Repeated 502: arrange two consecutive Stripe 502 responses, call\n   processPayment, and assert only that it rejects with PaymentUnavailable.\n   No assertion about the mock call history or virtual sleeper record\n   is planned for this test.",
        "savedPlan": "# Plan: Payment Processing — Test Coverage (CEO review, HOLD SCOPE)\n\nReviewed by /plan-ceo-review on 2026-09-16. Branch: main. Source plan: PLAN.md.\nMode: HOLD SCOPE (explicit user instruction). Session: 2506416-1789526437-a3ec2bf5.\n\n## Context\n\nprocessPayment() already implements two contracts that have no unit coverage in\nits own suite:\n\n1. A successful charge returns `{ chargeId, amountCents, currency }` copied from\n   the Stripe response and the request.\n2. With max_retries=1, repeated 502s produce exactly two charge attempts, one\n   recorded 100 ms backoff, then a PaymentUnavailable rejection.\n\nThe plan adds two tests to the existing processPayment suite using the existing\nfactory (max_retries=1, Stripe mock with call history, virtual sleeper that\nrecords backoff). Production code, other tests, and helpers stay as-is.\n\nNothing in this fixture repo contains the suite or the code; all statements about\nthe factory, mock and sleeper come from PLAN.md and are UNVERIFIED against source.\n\n## Pre-review audit\n\n- Repo: CLAUDE.md + PLAN.md only, one commit, clean tree, no stash, no TODOS.md,\n  no design doc, no handoff note, no prior review cycles.\n- Planned file changes: 1 edit (the processPayment spec file). 0 new files,\n  0 new classes/services. Estimate; the file path is not named in the plan.\n- UI scope: none.\n- Landscape: Layer 1 (inject clock, assert attempts + delays), Layer 2 (search\n  results agree: assert call_count, define maxAttempts, assert requested delays),\n  Layer 3 (a truthy-only assertion cannot fail when the contract breaks, so it\n  is a test count increase, not coverage).\n\n## Step 0A — Premise challenge\n\n1. Right problem? Yes: the two contracts are real and currently unguarded at the\n   processPayment level. Wrong solution as written: the proposed assertions\n   (truthy receipt; rejection type only) pass against a broken implementation.\n2. Outcome: regression protection for receipt shape and retry budget. The plan\n   as written reaches a proxy (two more green tests), not the outcome.\n3. Do nothing: a refactor that drops `amountCents` or retries 5 times ships\n   green. The pain is real; payments are money.\n\n## Step 0B — Existing code leverage\n\n| Sub-problem | Existing code (per PLAN.md) | Gap |\n|---|---|---|\n| Deterministic Stripe responses | Factory + Stripe mock | none |\n| Attempt counting | Mock call history | not asserted by plan |\n| Backoff without real delay | Virtual sleeper record | not asserted by plan |\n| Timeout / 402 / 429 / 502-then-success | Stripe adapter suite | covered elsewhere |\n| Receipt-builder failures | Receipt-builder regression tests | covered elsewhere |\n\nNothing is rebuilt. The plan reuses every helper it needs.\n\n## Step 0C — Dream state\n\n```\n  CURRENT STATE                 THIS PLAN                    12-MONTH IDEAL\n  processPayment suite has      +2 tests: happy receipt,     Every contract in the\n  no happy-path receipt test    exhausted-502 path           processPayment docs has an\n  and no exhausted-retry test                                assertion that fails when\n                                                             the contract breaks\n```\n\nDirection: toward the ideal only if the two tests assert the contracts. With\ntruthy-only assertions the suite grows but the ideal is no closer.\n\n## Step 0D — Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (owner: test author) | Test 1 receipt assertion. Contract: `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }` (PLAN.md \"Existing behavior retained\"). Test method: existing factory + Stripe mock. Coverage today: none at processPayment level. | Plan: assert only that receipt is truthy (\"complete planned assertion\"). | A) assert full receipt equality plus exactly one mock charge call with amountCents=1000, currency=USD. B) assert full receipt equality only. C) keep truthy-only. | unresolved | pending |\n| R2 (owner: test author) | Test 2 exhausted-502 assertion. Contract: two attempts, one recorded 100 ms backoff, PaymentUnavailable (PLAN.md). Test method: factory max_retries=1, mock call history, virtual sleeper. Coverage today: none for the exhausted path (502-then-success lives in adapter suite). | Plan: assert only rejection with PaymentUnavailable; explicitly no call-history or sleeper assertion. | A) also assert mock call history length 2 and sleeper record equals [100]. B) also assert call history length 2 only. C) keep rejection-only. | unresolved | pending |\n| R0 (owner: user) | Scope: unit tests only, two tests, one spec file, no production change, existing helpers reused. | as stated | no change proposed | approved | User request: \"HOLD SCOPE\"; PLAN.md \"Other tests and production code stay as-is.\" |\n\n### R1 option comparison\n\n| Commitment | Source / pending | Current | A | B | C |\n|---|---|---|---|---|---|\n| Receipt is returned | PLAN.md | truthy | equality | equality | truthy |\n| chargeId copied from Stripe | PLAN.md contract | unasserted | asserted | asserted | unasserted |\n| amountCents equals request | PLAN.md contract | unasserted | asserted | asserted | unasserted |\n| currency equals request | PLAN.md contract | unasserted | asserted | asserted | unasserted |\n| Exactly one charge call, correct args | pending (factory exposes call history) | unasserted | asserted | unasserted | unasserted |\n| Effort | | | S (human ~10 min / CC ~1 min) | S | S |\n| Risk | | | low | low | low (test cannot fail meaningfully) |\n\n### R2 option comparison\n\n| Commitment | Source / pending | Current | A | B | C |\n|---|---|---|---|---|---|\n| Rejects with PaymentUnavailable | PLAN.md contract | asserted | asserted | asserted | asserted |\n| Exactly two charge attempts | PLAN.md contract | unasserted | asserted | asserted | unasserted |\n| One recorded 100 ms backoff | PLAN.md contract | unasserted | asserted | unasserted | unasserted |\n| Effort | | | S (human ~10 min / CC ~1 min) | S | S |\n| Risk | | | low | low | low (retry budget regressions ship green) |\n\n## Step 0E — Mode\n\nHOLD SCOPE, explicit in the user's request. No mode question asked.\n\n## NOT in scope\n\n- Any production change to processPayment, the Stripe adapter, or the receipt builder.\n- New tests beyond the two named (adapter suite already covers timeout, 402, 429, 502-then-success).\n- Changes to the factory, mock, or virtual sleeper.\n\n## Post-review actions (outside plan mode)\n\n- D1: append gstack skill routing rules to CLAUDE.md and commit\n  (`chore: add gstack skill routing rules to CLAUDE.md`). Deferred because plan\n  mode blocks edits and commits during this review.\n",
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        "savedAtMs": 1789526616900.5166,
        "questionIssuedAt": "2026-09-16T02:43:55.275Z",
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