gstack/test/fixtures/ceo-current-decision-cdd-public.json

{
  "sourceRevision": "cdd39ee07533718765a59640b58faa73f5a54135",
  "description": "Exact retained public native calls and owned before-question file bytes. Counter replay is count credit only; original paid outcomes and checkpoint noncompliance remain FAIL.",
  "captures": [
    {
      "name": "paired-attempt1",
      "case": "paired",
      "attempt": 1,
      "originalOutcome": "FAIL",
      "paidPassCredit": 0,
      "sourceSha256": "a071e8076e8c35c261a572f8763fa48190089a33c40c8cff5f5ca634236257f7",
      "savedSha256": "b7d2ec71353445282a3ab6f0fe0403ea3111e25c0998e4932adbcf7331a9b7fd",
      "publicEventsSha256": "337714f970d217087bf1b50dc47443d6e4dd3c6ac9c122718d8e4e71fe66368b",
      "source": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/g-fmjf7yah/gstack-paid-shard-RjoxNc/tmp/gstack-e2e-plan-ceo-paired-G4ggjk/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\nSource: `PLAN.md` @ 595919a on `main` (repo `gstack-plan-count-rRdsBt`).\nReviewer: /plan-ceo-review, session 3915275-1789551643-98373ea2, 2026-09-16.\nMode: HOLD SCOPE (explicit user instruction). Review only; no code changes.\n\n## Context\n\nThe two contracts below are already implemented in `processPayment()` and have\nno direct unit coverage in the processPayment suite. The plan adds two tests so a\nfuture refactor of the receipt builder or the retry loop fails a test instead of\nshipping silently. Deliverable count: 1 file edited (the existing processPayment\nsuite; estimate, file not present in this checkout), 0 files added, 0 deleted.\n\n## Pre-review system audit\n\n| Check | Result |\n|---|---|\n| Repo contents | `CLAUDE.md`, `PLAN.md` only. `processPayment()`, the Stripe adapter suite, the payment test factory, the Stripe mock and the virtual sleeper are NOT in this checkout. Every code-level claim below is plan-stated and unverified here (marked \"unknown\"). |\n| Remote / base branch | No `origin` remote; base branch `main` (git-native fallback). |\n| History / stash / in-flight | 1 commit (`595919a Seed review plan`), no stash, no other branches, no TODO/FIXME/HACK. |\n| TODOS.md / design doc / handoff | None. `/office-hours` skipped per user instruction. |\n| Prior learnings / brain context | 0 learnings (cross-project search enabled this session, D0.1); all brain digests cold. |\n| Retrospective | No earlier review cycles, refactors or reverts on this branch. |\n| Frontend/UI scope | None. Section 11 will be a no-UI skip. |\n| Taste calibration | Skipped (EXPANSION modes only). |\n\n### Landscape check (Aside unavailable; WebSearch used, read-only)\n\n- **Layer 1 (tried and true):** retry tests inject the clock/sleeper, then assert the backend attempt count and the recorded delay schedule. Output tests assert the full observable value, not a presence check.\n- **Layer 2 (search):** 2026 guidance agrees: \"assert backend invocation count\" and \"assert calculated ranges and caps from recorded delay requests instead of measuring wall-clock time\"; define `maxAttempts` precisely because teams disagree whether the first call counts. Sources: [OneUptime, test jittered retries deterministically](https://oneuptime.com/blog/post/2026-08-14-test-jittered-retries-deterministically/view), [QASkills, testing 429 retry/backoff](https://qaskills.sh/blog/testing-api-rate-limiting-429-retry-guide), [QASkills, Vitest fake timers](https://qaskills.sh/blog/vitest-fake-timers-date-testing-guide).\n- **Layer 3 (first principles):** a test that passes for `{}` or for zero retries is a proxy metric (a test exists) rather than protection (a regression is caught). The plan's own fixtures already record attempt history and backoff; the plan's only cost to use them is a few assertion lines.\n\n## Step 0\n\n### 0A. Premise challenge\n1. **Right problem?** Yes: pin two already-implemented contracts with unit tests in the suite that owns `processPayment()`. No simpler framing exists; the framing is correct but the proposed assertions do not reach it.\n2. **Outcome vs proxy.** Outcome: a regression in receipt shape or retry policy fails CI. Proposed test 1 (`receipt` truthy) passes when `chargeId` is missing, `amountCents` is `100000`, or `currency` is `\"usd\"`. Proposed test 2 (rejects `PaymentUnavailable`) passes with zero retries, five retries, no backoff, or a real 100 ms sleep. As written the plan produces the proxy (coverage) and not the outcome (protection).\n3. **Do nothing?** The contracts already hold in production. The pain is latent, not hypothetical: the Stripe adapter suite covers 502-then-success but nothing pins the exhausted-502 path or the receipt field mapping, so a refactor breaks them silently.\n\n### 0B. Existing code leverage (all plan-stated, unverified in this checkout)\n| Sub-problem | Existing code | Used by plan? |\n|---|---|---|\n| Deterministic retries | Factory sets `max_retries=1` | Yes |\n| Observe attempts | Factory exposes Stripe mock call history | No (explicitly declined) |\n| Observe backoff | Injected virtual sleeper records delays, no real waits | No (explicitly declined) |\n| 502 then success | Stripe adapter suite | Already covered; not duplicated |\n| Receipt-builder failures | Own regression tests | Already covered; not duplicated |\n\nNothing is rebuilt. The only leverage gap is that two existing observability hooks (call history, sleeper record) sit unused next to the tests that need them.\n\n### 0C. Dream state\n```\n  CURRENT STATE                    THIS PLAN                       12-MONTH IDEAL\n  Contracts implemented,   --->    2 tests in processPayment  ---> processPayment suite reads as the\n  pinned only indirectly           suite pin happy path and        spec: every receipt field, attempt\n  via adapter/receipt suites       exhausted-retry path            count and backoff schedule asserted\n```\nThe plan moves toward the ideal only if the assertions actually pin the contracts. With presence-only assertions it adds test count without adding protection, which is drift toward the proxy.\n\n### Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 — user | Test 1 assertion depth. Contract: PLAN.md L18-21 (`{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }`). Fixtures: factory + mock call history + sleeper (PLAN.md L12-14, unknown in checkout). | PLAN.md L30-32: assert only `receipt` truthy (\"complete planned assertion\"). | A) full receipt equality + exactly 1 charge attempt + empty sleeper record; B) full receipt equality only; C) truthy only (as planned). | unresolved | pending |\n| D2 — user | Test 2 assertion depth. Contract: PLAN.md L22-23 (two attempts, one recorded 100 ms backoff, then `PaymentUnavailable`). Fixtures as above. | PLAN.md L33-36: assert only rejection with `PaymentUnavailable`; no call-history or sleeper assertion. | A) rejection + exactly 2 attempts + sleeper record `[100]`; B) rejection + exactly 2 attempts; C) rejection only (as planned). | unresolved | pending |\n\n### 0D. Alternatives\n\n**currentDecision: D1 — How much of the successful-charge contract should test 1 assert?**\n\nCommitment | Source/approval or pending | Current | A | B | C\n---|---|---|---|---|---\nReceipt is truthy | PLAN.md L31-32 | yes | yes | yes | yes\n`chargeId === \"ch_paid\"` | contract PLAN.md L18-21, pending | no | yes | yes | no\n`amountCents === 1000` (integer) | contract PLAN.md L19, pending | no | yes | yes | no\n`currency === \"USD\"` | contract PLAN.md L19-20, pending | no | yes | yes | no\nExactly 1 Stripe charge attempt (mock call history) | fixture PLAN.md L12-13, pending | no | yes | no | no\nSleeper record empty (no backoff on success) | fixture PLAN.md L13-14, pending | no | yes | no | no\nProduction code unchanged | PLAN.md L8, L28 (approved) | yes | yes | yes | yes\nSame suite, factory, mock, sleeper | PLAN.md L27-28 (approved) | yes | yes | yes | yes\n\n- **A) Full contract: receipt deep-equals `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }`, mock called exactly once, sleeper record empty.** Effort S (CC: ~2 min, human: ~10 min). Risk low. Pros: pins every field the plan itself lists as the contract; catches a stray retry or backoff on the success path, which nothing else covers; the assertions ARE the spec. Cons: three extra assertion lines; if the factory's history/sleeper accessors differ from the plan's description the test needs a small adjustment. Reuse: existing factory, mock, sleeper. Verification coverage: 10/10.\n- **B) Receipt fields only: deep-equal the three fields, no attempt-count or sleeper assertion.** Effort S (CC: ~1 min, human: ~5 min). Risk low. Pros: catches the receipt-mapping regressions (wrong id, unit, currency case); needs no fixture accessors beyond the mock arrangement. Cons: a spurious retry or backoff on the happy path passes unnoticed; leaves the exposed call history unused. Reuse: existing factory and mock. Verification coverage: 7/10.\n- **C) Truthy only, as planned.** Effort S (zero extra work; the plan's current text). Risk high for its purpose. Pros: smallest possible diff; cannot break if the factory accessors differ. Cons: passes for `{}`, `true`, or a receipt with wrong amount or currency; creates false confidence, which is worse than no test; contradicts the plan's own \"Existing behavior retained\" section. Reuse: existing factory and mock. Verification coverage: 3/10.\n\nRecommendation: A. Completeness: A=10/10, B=7/10, C=3/10.\n\n**D2 — pending; comparison drafted after D1 is answered.**\n\n## GSTACK REVIEW REPORT\n\n(pending; written after Step 0 and the review sections complete)\n",
      "calls": [
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          "toolUseId": "toolu_017wnuUuQKkLu1QjUFxaGK8H",
          "questions": [
            {
              "question": "D0 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-rRdsBt on main, starting the HOLD SCOPE CEO 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 setup prompt. Note: we are in plan mode, so if you pick A the CLAUDE.md edit and commit would happen after this review exits plan mode, not now.\nStakes if we pick wrong: Low either way; without routing you invoke skills by name manually, and the prompt will not repeat for this project.\nRecommendation: A because routing rules make skill use automatic with no downside for a fixture repo.\nNote: options differ in kind, not coverage — no completeness score.\nNet: automatic skill routing vs. keeping CLAUDE.md untouched.",
              "header": "Routing",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Add routing rules (recommended)",
                  "description": "✅ Future requests auto-route to the right gstack skill without remembering names\n✅ One-time setup; the section is appended, nothing existing is altered\n❌ Adds a commit to CLAUDE.md in a fixture repo, deferred until plan mode exits"
                },
                {
                  "label": "B) No thanks, invoke manually",
                  "description": "✅ CLAUDE.md stays exactly as-is; no extra commit in this repository\n✅ Records routing_declined so this prompt never returns for this project\n❌ You must type skill names yourself each time you want one"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D0 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-rRdsBt on main, starting the HOLD SCOPE CEO 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 setup prompt. Note: we are in plan mode, so if you pick A the CLAUDE.md edit and commit would happen after this review exits plan mode, not now.\nStakes if we pick wrong: Low either way; without routing you invoke skills by name manually, and the prompt will not repeat for this project.\nRecommendation: A because routing rules make skill use automatic with no downside for a fixture repo.\nNote: options differ in kind, not coverage — no completeness score.\nNet: automatic skill routing vs. keeping CLAUDE.md untouched.": "A) Add routing rules (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:41:05.458Z"
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          "sessionId": "fccfce45-5287-474d-8fca-a9924908f2b1",
          "toolUseId": "toolu_01U71LYzBsMzH6B7qFmSepZe",
          "questions": [
            {
              "question": "D0.1 — Enable cross-project learnings search on this machine?\nProject/branch/task: gstack-plan-count-rRdsBt on main, pre-review setup (one-time config).\nELI10: gstack keeps a local notebook of lessons learned per project. It can also peek into the notebooks of your other projects on this machine to spot patterns that apply here. Nothing leaves your machine either way. This project currently has zero learnings, so today the choice only affects future sessions.\nStakes if we pick wrong: Two-way door; flip it anytime with `gstack-config set cross_project_learnings true|false`.\nRecommendation: A because for a solo developer more local signal is free; skip only if you juggle separate client codebases.\nNote: options differ in kind, not coverage — no completeness score.\nNet: broader local pattern recall vs. strict per-project isolation.",
              "header": "Learnings",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Enable cross-project (recommended)",
                  "description": "✅ Reviews can reuse pitfalls and fixes discovered in your other local projects\n✅ Stays local: no network, no data leaves the machine, reversible any time\n❌ Learnings from unrelated client codebases could surface where they do not apply"
                },
                {
                  "label": "B) Project-scoped only",
                  "description": "✅ Zero chance of cross-contamination between separate client codebases\n✅ Simpler mental model: each project's learnings stay in its own lane\n❌ A pitfall you already solved elsewhere will not be recalled here"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D0.1 — Enable cross-project learnings search on this machine?\nProject/branch/task: gstack-plan-count-rRdsBt on main, pre-review setup (one-time config).\nELI10: gstack keeps a local notebook of lessons learned per project. It can also peek into the notebooks of your other projects on this machine to spot patterns that apply here. Nothing leaves your machine either way. This project currently has zero learnings, so today the choice only affects future sessions.\nStakes if we pick wrong: Two-way door; flip it anytime with `gstack-config set cross_project_learnings true|false`.\nRecommendation: A because for a solo developer more local signal is free; skip only if you juggle separate client codebases.\nNote: options differ in kind, not coverage — no completeness score.\nNet: broader local pattern recall vs. strict per-project isolation.": "A) Enable cross-project (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:42:01.571Z"
        },
        {
          "sessionId": "fccfce45-5287-474d-8fca-a9924908f2b1",
          "toolUseId": "toolu_017q5kLvjeZuQ98MG2mSyaSj",
          "questions": [
            {
              "question": "D1 — How much of the successful-charge contract should test 1 assert?\nProject/branch/task: gstack-plan-count-rRdsBt on main, HOLD SCOPE CEO review of PLAN.md (Proposed tests, item 1).\nELI10: The plan says a 1000-cent USD charge must come back as { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }, but the test only checks that *something* came back. A refactor that returns {} or amountCents: 100000 would still pass. The fixtures already expose the mock's call history and the sleeper's record, so asserting the real contract costs a few lines.\nStakes if we pick wrong: A weak test gives false confidence; a receipt-mapping regression (wrong id, wrong unit, lowercase currency) ships with a green suite.\nRecommendation: A because the plan already states the exact contract and the fixtures already expose the data; the assertions become the spec.\nCompleteness: A=10/10, B=7/10, C=3/10\nNet: three extra assertion lines vs. a test that cannot fail for the bugs it exists to catch.",
              "header": "Test 1 depth",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Full contract (recommended)",
                  "description": "Deep-equal all three receipt fields, assert exactly 1 Stripe charge attempt, assert sleeper record empty. Effort S (CC ~2 min / human ~10 min), risk low.\n✅ Pins every field the plan lists as the contract, so a mapping regression fails CI\n✅ Catches a stray retry or backoff on the happy path, which no other suite covers\n❌ Depends on the factory's history/sleeper accessors matching the plan's description"
                },
                {
                  "label": "B) Receipt fields only",
                  "description": "Deep-equal chargeId, amountCents, currency; no attempt-count or sleeper assertion. Effort S (CC ~1 min / human ~5 min), risk low.\n✅ Catches wrong id, wrong unit and wrong currency case with no extra fixture accessors\n✅ Smaller diff than A and immune to accessor naming differences\n❌ A spurious retry or backoff on the success path passes unnoticed"
                },
                {
                  "label": "C) Truthy only, as planned",
                  "description": "Keep PLAN.md's assertion: receipt is truthy. Effort S (zero extra work), risk high for its purpose.\n✅ Smallest possible diff; cannot break if fixture accessors differ\n✅ Still proves processPayment resolves rather than throws on a 2xx\n❌ Passes for {}, true, or a receipt with the wrong amount or currency; false confidence"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D1 — How much of the successful-charge contract should test 1 assert?\nProject/branch/task: gstack-plan-count-rRdsBt on main, HOLD SCOPE CEO review of PLAN.md (Proposed tests, item 1).\nELI10: The plan says a 1000-cent USD charge must come back as { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }, but the test only checks that *something* came back. A refactor that returns {} or amountCents: 100000 would still pass. The fixtures already expose the mock's call history and the sleeper's record, so asserting the real contract costs a few lines.\nStakes if we pick wrong: A weak test gives false confidence; a receipt-mapping regression (wrong id, wrong unit, lowercase currency) ships with a green suite.\nRecommendation: A because the plan already states the exact contract and the fixtures already expose the data; the assertions become the spec.\nCompleteness: A=10/10, B=7/10, C=3/10\nNet: three extra assertion lines vs. a test that cannot fail for the bugs it exists to catch.": "A) Full contract (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:44:17.458Z"
        }
      ]
    },
    {
      "name": "distinct-attempt1",
      "case": "distinct",
      "attempt": 1,
      "originalOutcome": "FAIL",
      "paidPassCredit": 0,
      "sourceSha256": "b802900b34693b47f3d6b4e53799971efd2c7694314f1288fa35830f7db257bc",
      "savedSha256": "4b7e05fbd429219a15e28ab450dbfb623bbd5fd3edb2b278557dc75c36700730",
      "publicEventsSha256": "8237f486fbf072b4637fe428d3e5d95a11971a20fb13b31e14b62754599d928e",
      "source": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/g-fmjf7yah/gstack-paid-shard-RjoxNc/tmp/gstack-e2e-plan-ceo-fQVt9h/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 Working Plan: Payment Processing Integration\n\nGenerated by /plan-ceo-review on 2026-09-16\nBranch: main | Base: main | Mode: HOLD SCOPE (explicit user instruction)\nPlan under review: PLAN.md (repo root)\nSession: 3915266-1789551647-b893326e\n\n## Context\n\nThe approved motivation (PLAN.md lines 8-11) is to move payment orchestration\nout of the prior library-adapter handler into application-owned code while\nretaining existing payment and receipt product behavior exactly. Everything\naround the handler is already built and unchanged: Stripe signature check,\n`payment_intent.succeeded` filter, ownership guard, event-ID dedup + per-user\nlock, unknown-user guard, recipient policy, shared mail client (idempotency key,\ndurable failed-attempt record, 1s deadline, MailTimeout), DB/mail outcome\ntracing with handler identity, feature flag + tested rollback, ingress logging\nand alerts. The only new code is the handler body: user lookup, user update,\norder load, receipt send.\n\nThis review holds that scope. It traces every failure path of the new handler\nbody and repairs only what is needed to keep the stated invariants.\n\n## Pre-review audit (evidence)\n\n- Repo: single commit `af9c998 Seed review plan`; files CLAUDE.md, PLAN.md.\n  No remote URL, no stash, no TODOS.md, no FIXME/TODO markers, no design doc,\n  no handoff note. Platform unknown -> git-native; base branch `main`.\n- Prior learnings: 0. Brain digests: none. Active decisions: none.\n- Frontend scope: none (Section 11 = no-UI skip).\n- Landscape (Aside unavailable, WebSearch used): current guidance agrees on\n  verify -> dedupe -> commit -> 200 fast, side effects off the request path;\n  Stripe retries failed deliveries with backoff up to ~72h then disables the\n  endpoint until manually re-enabled. Sources: hookray.com, hooklistener.com,\n  theroadtoenterprise.com, snowinch.com, docs.stripe.com.\n- Layer 3: this codebase already has durable notification retry records,\n  a provider idempotency key, and a runbook; queueing the email is over-solving.\n  The live question is only whether a mail failure should 500 a committed\n  payment (row R3).\n\n## Step 0A-0C\n\n**0A Premise:** right problem, correct framing (ownership refactor, zero\nproduct-behavior change). Doing nothing leaves working code hostage to the\nlibrary adapter's shape.\n\n**0B Leverage:** all guards, clients, tracing, flag, runbooks exist and are\nretained. The one rebuilt thing is routing (bypassing `WebhookDispatcher`);\nnamespace separation is already delivered by the settled `Webhooks::` name.\n\n**0C Dream state:**\n```\n  CURRENT STATE                      THIS PLAN                         12-MONTH IDEAL\n  Payment orchestration lives   ---> Webhooks::StripePaymentWebhook ---> Every Stripe event type is an\n  in a library-adapter handler;      Handler owns lookup/update/         app-owned handler registered with\n  guards, mail, tracing, flag        order-load/receipt; guards          one dispatcher; queries bound,\n  are shared and app-owned.          unchanged.                           receipts batch-loaded, handler\n                                                                          contract covered by unit+integration\n                                                                          tests so rollout is flag-flip only.\n```\nToward the ideal on ownership; away on dispatcher bypass, raw SQL, N+1 under\na 2s DB budget; neutral-to-away on tests.\n\n**0E Mode:** HOLD SCOPE, explicit user instruction (\"review this plan\nthoroughly in HOLD SCOPE mode\"). No mode question asked.\n\n**0G HOLD SCOPE checks:** 1 new class, est. 3-5 files (handler, registration/\nflag wiring, lookup query, tests if approved). Under thresholds; the dispatcher\nbypass is the one extra moving part to challenge (R1). Minimum change = one\nhandler registered with the existing dispatcher + repairs required by stated\ninvariants. No item is deferrable without weakening an invariant; no\ndefer/keep questions raised.\n\n## Stated limits (keep unchanged)\n\n| Measure | Value | Source |\n|---|---|---|\n| Webhook deadline | 10 s | PLAN.md L95 |\n| DB + ingress combined deadline | 2 s | PLAN.md L94-95 |\n| Mail client deadline | 1 s, cancel, no inline retries, raises MailTimeout | PLAN.md L92-94 |\n| Receipts per PaymentIntent | exactly 1 (empty order summary allowed) | PLAN.md L81-84 |\n| User update | assign payment_status=paid + PI id (idempotent, no counters) | PLAN.md L40-42 |\n| Handler class name (if separate) | `Webhooks::StripePaymentWebhookHandler` | PLAN.md L100-103 (settled) |\n| Rollout | existing feature flag + tested rollback + manual staging replay | PLAN.md L74-80 |\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (plan author) Dispatcher integration | PLAN.md L10-11, L100-108: \"whether to add a separate implementation or reuse WebhookDispatcher remains open\"; plan proposes bypass | New class bypasses `WebhookDispatcher` | A) register handler with existing dispatcher; B) bypass as written; C) reuse dispatcher module directly, no new class | unresolved | pending |\n| R2 (plan author) Lookup query construction | PLAN.md L21-26, L110-112: raw SQL fragment from `request.params.userId`; IDs are opaque TEXT incl. punctuation/Unicode, never sanitized | Raw SQL interpolation | A) bound parameter / query builder; B) keep raw fragment | unresolved | pending |\n| R3 (plan author) Email leg failure handling | PLAN.md L52-53, L60-73, L85-97, L114-116: mail client rethrows; DB errors -> 500 -> Stripe retry; failed sends durably recorded for runbook; no error handling on email leg | Unrescued inline send; mail failure -> 500 | A) rescue named mail errors after commit, log correlated, 200; B) keep unrescued (500 -> Stripe retry); C) rescue but 500 anyway | unresolved | pending |\n| R4 (plan author) Order loading | PLAN.md L81-84, L94-95, L121-123: order loop is data loading for one receipt; DB budget 2 s | Per-order query in a loop (N+1) | A) single batch query; B) keep loop | unresolved | pending |\n| R5 (plan author) Automated tests | PLAN.md L76-80, L118-119: no new automated tests; manual staging replay only | None planned | A) unit + integration for handler paths; B) integration only; C) none (as written) | unresolved | pending |\n| D1 (user) gstack routing rules in CLAUDE.md | preamble routing-injection block | absent | append routing section + chore commit | approved | AUQ D1 answer \"Add routing rules\"; applied after plan mode exits (edit + commit blocked in plan mode) |\n\n## NOT in scope\n\n(none yet)\n\n## Working plan (current values; amended as rows resolve)\n\n### Architecture\nPending R1. Settled: if a separate class exists it is\n`Webhooks::StripePaymentWebhookHandler`; it runs inside the unchanged ingress\nguards (signature, event filter, ownership, dedup + per-user lock, unknown-user).\n\n### Database access\nPending R2. Current text: reads `request.params.userId` directly into a raw\nSQL fragment.\n\n### Webhook fan-out\nPending R3. Current text: update user, then send receipt inline, no error\nhandling on the email leg. Retained: recipient policy skips nil/empty address\nwith a durable skip record; one receipt per PaymentIntent via provider\nidempotency key.\n\n### Tests\nPending R5. Current text: none planned; rely on existing integration suite and\nmanual staging replay.\n\n### Performance\nPending R4. Current text: user lookup, then one query per order in a loop.\n\n## currentDecision\n\n**Row R1 — How does the new handler get invoked: through `WebhookDispatcher` or around it?**\nHeader: Dispatcher\n\nSource: PLAN.md L10-11 (\"shared dispatcher remains available; the proposed\nbypass below is still an architectural choice to review\"), L100-103 (name\nsettled; separate-vs-reuse open), L105-108 (proposed bypass for \"clean\nnamespace separation\").\n\nCommitment comparison (Proposed):\n```text\nCommitment                 | Source/approval or pending | Current (prior handler) | A register with dispatcher      | B bypass dispatcher                 | C fold into dispatcher, no class\nHandler class + namespace  | settled L100-103           | library adapter         | Webhooks::StripePaymentWebhookHandler | Webhooks::StripePaymentWebhookHandler | none (module method)\nRouting path               | pending L103               | dispatcher              | dispatcher (one path)           | direct wiring (second path)          | dispatcher (one path)\nRuns inside ingress guards | retained L38-39            | yes                     | yes, unchanged                  | yes, but bypass wiring must be verified (unknown where flag/guards attach) | yes\nFeature-flag switch point  | retained L74-75            | existing                | existing                        | existing IF it sits before the bypass; unknown | existing\nHandler-identity trace     | retained L98-99            | existing                | existing                        | existing IF trace is set outside dispatcher; unknown | existing\nNamespace separation goal  | L107-108                   | n/a                     | delivered by the class name     | delivered by the class name + extra routing | not delivered (dispatcher becomes payment-aware)\n```\n\n- **A) Register `Webhooks::StripePaymentWebhookHandler` with the existing `WebhookDispatcher` (recommended).** One new app-owned class; the dispatcher keeps doing routing. Effort S (human ~half day / CC ~10 min). Risk low. Pros: single routing path, flag and handler-identity trace stay where they are, namespace separation comes from the name. Cons: depends on the dispatcher's registration API accepting an app-namespace handler (unknown, cheap to verify). Reuse: dispatcher, all guards. Verification: existing dispatcher tests + handler tests (R5).\n- **B) Bypass `WebhookDispatcher` as written.** Wire the new class directly from ingress. Effort S (human ~1 day incl. wiring / CC ~15 min). Risk medium. Pros: no coupling to the dispatcher's API; the class is self-contained. Cons: a second routing path to keep in sync; where the feature flag and handler-identity trace attach relative to the bypass is unknown, so \"runs inside unchanged guards\" must be re-proven; the 12-month ideal (every event type via one dispatcher) gets harder. Reuse: guards. Verification: new wiring tests needed.\n- **C) No new class; add the orchestration to `WebhookDispatcher` directly.** Effort S-M (human ~1 day / CC ~15 min). Risk medium. Pros: zero new files beyond the dispatcher edit; one path. Cons: the dispatcher becomes payment-aware, defeating the ownership goal; the settled name is unused; harder to flag-switch prior vs new. Reuse: dispatcher. Verification: dispatcher tests grow payment cases.\n\nNote: options differ in kind, not coverage — no completeness score.\n",
      "calls": [
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          "questions": [
            {
              "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-Kkbsjq on main, starting the /plan-ceo-review of PLAN.md.\nELI10: gstack has a bunch of slash-command skills (review, ship, investigate, etc). A short routing table in CLAUDE.md tells Claude which skill to reach for when you say things like \"review this\" or \"ship it\", so you don't have to remember skill names. It's a one-time, per-project setup. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit happen after this review finishes and plan mode exits.\nStakes if we pick wrong: pick A and you get an extra ~15-line section in CLAUDE.md; pick B and you invoke skills by name manually. Either is reversible.\nRecommendation: A because routing rules make later skills fire on natural requests instead of exact names.\nNote: options differ in kind, not coverage — no completeness score.\nNet: a small CLAUDE.md addition for smoother skill invocation vs. keeping CLAUDE.md untouched.",
              "header": "Routing",
              "multiSelect": false,
              "options": [
                {
                  "label": "Add routing rules (recommended)",
                  "description": "✅ Natural-language requests (\"review this\", \"ship it\") route to the right skill automatically\n✅ One-time per project; the section is short and lives at the end of CLAUDE.md\n❌ Adds ~15 lines to CLAUDE.md and a chore commit, applied after plan mode exits"
                },
                {
                  "label": "No thanks, invoke manually",
                  "description": "✅ CLAUDE.md stays exactly as it is; no extra commit in this fixture repo\n✅ You keep full control over when skills run\n❌ You must remember and type skill names; the offer is not repeated for this project"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-Kkbsjq on main, starting the /plan-ceo-review of PLAN.md.\nELI10: gstack has a bunch of slash-command skills (review, ship, investigate, etc). A short routing table in CLAUDE.md tells Claude which skill to reach for when you say things like \"review this\" or \"ship it\", so you don't have to remember skill names. It's a one-time, per-project setup. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit happen after this review finishes and plan mode exits.\nStakes if we pick wrong: pick A and you get an extra ~15-line section in CLAUDE.md; pick B and you invoke skills by name manually. Either is reversible.\nRecommendation: A because routing rules make later skills fire on natural requests instead of exact names.\nNote: options differ in kind, not coverage — no completeness score.\nNet: a small CLAUDE.md addition for smoother skill invocation vs. keeping CLAUDE.md untouched.": "Add routing rules (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:41:05.454Z"
        },
        {
          "sessionId": "6b6e9a8e-7ea5-4b5a-8747-8e14fe6028a5",
          "toolUseId": "toolu_01X9sS2w47Yqoj9wsdr7Tq6A",
          "questions": [
            {
              "question": "D2 (row R1) — How does the new handler get invoked: through `WebhookDispatcher` or around it?\nProject/branch/task: gstack-plan-count-Kkbsjq on main, HOLD SCOPE review of the Stripe payment handler plan.\nELI10: Your app already has one front door (`WebhookDispatcher`) that decides which code handles which Stripe event. The plan proposes to give the new payment handler its own side door for \"clean namespace separation\". But the separation you want already comes from the settled class name `Webhooks::StripePaymentWebhookHandler`; a side door just means two routing paths to keep in sync. PLAN.md L103 says separate-vs-reuse is still open, so this is a real decision, not a re-litigation.\nStakes if we pick wrong: with a second path, the feature flag and the handler-identity trace may not sit in front of the bypass, so a rollout or an incident could route or attribute events wrongly and nobody notices until a payment is mis-handled.\nRecommendation: A because it gives you the app-owned class you approved with one routing path and no re-proving of the guards.\nNote: options differ in kind, not coverage — no completeness score.\nNet: A keeps one front door and the approved name; B trades that for a self-contained class plus unverified wiring; C removes the class and makes the dispatcher payment-aware.",
              "header": "Dispatcher",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Register with dispatcher (recommended)",
                  "description": "S effort (human ~half day / CC ~10 min), low risk.\n✅ One routing path; flag switch and handler-identity trace stay exactly where they are today\n✅ Namespace separation is delivered by the settled `Webhooks::` class name, nothing else needed\n❌ Depends on the dispatcher's registration API accepting an app-namespace handler (unknown, cheap to check)"
                },
                {
                  "label": "B) Bypass dispatcher as written",
                  "description": "S effort (human ~1 day incl. wiring / CC ~15 min), medium risk.\n✅ No coupling to the dispatcher's API; the class is fully self-contained\n✅ Matches the plan text verbatim, no rewording of the Architecture section\n❌ Second routing path; where the feature flag and identity trace attach relative to the bypass is unknown, so \"runs inside unchanged guards\" must be re-proven with new wiring tests"
                },
                {
                  "label": "C) Fold into dispatcher, no new class",
                  "description": "S-M effort (human ~1 day / CC ~15 min), medium risk.\n✅ Zero new files; one routing path\n✅ No registration API question at all\n❌ Dispatcher becomes payment-aware, which defeats the approved ownership goal and leaves the settled class name unused; flag-switching prior vs new gets harder"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D2 (row R1) — How does the new handler get invoked: through `WebhookDispatcher` or around it?\nProject/branch/task: gstack-plan-count-Kkbsjq on main, HOLD SCOPE review of the Stripe payment handler plan.\nELI10: Your app already has one front door (`WebhookDispatcher`) that decides which code handles which Stripe event. The plan proposes to give the new payment handler its own side door for \"clean namespace separation\". But the separation you want already comes from the settled class name `Webhooks::StripePaymentWebhookHandler`; a side door just means two routing paths to keep in sync. PLAN.md L103 says separate-vs-reuse is still open, so this is a real decision, not a re-litigation.\nStakes if we pick wrong: with a second path, the feature flag and the handler-identity trace may not sit in front of the bypass, so a rollout or an incident could route or attribute events wrongly and nobody notices until a payment is mis-handled.\nRecommendation: A because it gives you the app-owned class you approved with one routing path and no re-proving of the guards.\nNote: options differ in kind, not coverage — no completeness score.\nNet: A keeps one front door and the approved name; B trades that for a self-contained class plus unverified wiring; C removes the class and makes the dispatcher payment-aware.": "A) Register with dispatcher (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:45:01.084Z"
        }
      ]
    },
    {
      "name": "paired-attempt2",
      "case": "paired",
      "attempt": 2,
      "originalOutcome": "FAIL",
      "paidPassCredit": 0,
      "sourceSha256": "49acdaf79f350f99da250fa8932f78f67c598132be724740251cb40791d61fb3",
      "savedSha256": "7613297ec1c4a889c8c0fed00741a43e23e510a57573b71d95f395644ead3a84",
      "publicEventsSha256": "48d26162847c432b81e852c17ce8ffa98fc2c946747c0942ed470da6715bb531",
      "source": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/g-fmjf7yah/gstack-paid-shard-RjoxNc/tmp/gstack-e2e-plan-ceo-paired-Jh6y11/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 working plan)\n\nSource: `PLAN.md` @ 09e1a93 on `main`. Review: `/plan-ceo-review`, mode HOLD SCOPE (explicit user instruction). Base branch: `main`.\n\n## Context\nprocessPayment() already implements two contracts (successful receipt shape; retry-then-PaymentUnavailable on repeated 502). PLAN.md adds two unit tests for them in the existing processPayment suite. Production code, other tests, and the test factory (max_retries=1, Stripe mock with call history, virtual sleeper) stay as-is. This working plan records the review's evidence, the decision ledger, and the amended plan as decisions are made.\n\n## Stated limits (recorded, unchanged unless approved)\n| Measure | Value | Unit | Source |\n|---|---|---|---|\n| Retries | max_retries=1 → 2 total attempts | attempts | PLAN.md L12-14, L22 |\n| Backoff between attempts | 100 | ms, recorded by virtual sleeper | PLAN.md L23 |\n| Test amount / currency / charge id | 1000 / USD / ch_paid | cents / ISO code / id | PLAN.md L20-21 |\n| Deliverables | 2 tests added, 1 test file edited, 0 new files, 0 production changes | count | PLAN.md L27-28 |\n| Retained | Stripe adapter suite (timeouts, 402, 429, 502→success), receipt-builder regressions | suites | PLAN.md L9-11 |\n\n## Pre-review system audit\n- Repo contains only `PLAN.md` and `CLAUDE.md`; one commit (\"Seed review plan\"). No production or test source is checked in here, so the processPayment suite, factory, mock and sleeper described in PLAN.md cannot be read. All references to them below are taken from PLAN.md and are marked **unverified**.\n- No stash, no TODO/FIXME, no TODOS.md, no design doc, no handoff note, no prior learnings, no brain digests.\n- Retrospective check: no prior review cycles in history.\n- Frontend/UI scope: none (DESIGN_SCOPE = no).\n- Landscape (Layer 1/2/3): mock the vendor adapter and use fake timers; assert your own contract, not Stripe's; for retry logic the load-bearing assertions are attempt count and backoff, not only the terminal error.\n\n## Step 0 evidence\n\n### 0A. Premise Challenge\n1. Right problem: yes. Two implemented contracts have no direct unit coverage at the processPayment level; adding them is the correct, minimal framing.\n2. Outcome: a regression in receipt shape or retry behavior fails CI before it reaches users. As written, test 1 (truthy) and test 2 (rejection only) do not reach that outcome: they pass on a receipt with the wrong chargeId/amount/currency and on a retry loop that makes 1, 3 or 50 attempts with no backoff. The plan solves a proxy (\"a test exists\") rather than the outcome (\"the contract is pinned\").\n3. Do nothing: the contracts stay implemented but unpinned; the pain is real because the plan itself says the contracts matter enough to document to the cent and millisecond.\n\n### 0B. Existing Code Leverage\n| Sub-problem | Existing code (per PLAN.md, unverified) | Reuse |\n|---|---|---|\n| Arrange a successful charge | factory + Stripe mock returning an id | reuse as-is |\n| Arrange consecutive 502s | Stripe mock (adapter suite already does 502→success) | reuse the same arrangement pattern |\n| Observe attempt count | factory exposes Stripe mock call history | already built; the plan chooses not to read it |\n| Observe backoff | injected virtual sleeper records backoff | already built; the plan chooses not to read it |\nNothing is being rebuilt. The only gap is that two existing observability hooks (call history, sleeper record) are left unused by the tests that exist to exercise them.\n\n### 0C. Dream State Mapping\n```\n  CURRENT STATE                      THIS PLAN                        12-MONTH IDEAL\n  contracts implemented,     --->   2 tests exist; receipt shape  --->  every processPayment contract\n  pinned only indirectly            and retry count still unpinned      pinned by one explicit test each;\n  via adapter suite                                                     retry/backoff regressions fail CI\n```\nThe plan moves toward the ideal only if the assertions pin the stated values. With truthy/rejection-only assertions it moves sideways: a test that cannot fail on the regression it names.\n\n### 0E. Mode\nHOLD SCOPE, explicit user choice. Planned file changes: 1 edit (processPayment suite), 0 adds, 0 deletes (estimate; suite path unverified).\n\n## Decision ledger\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| R1 (test author) | Successful-charge receipt: `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }` (PLAN.md L18-21). Existing coverage: receipt-builder regressions (indirect, unverified). | Test 1 asserts only that the receipt is truthy (PLAN.md L30-32). | A) deep-equal the full receipt; B) assert `chargeId === \"ch_paid\"` only; C) keep truthy. | unresolved | — |\n| R2 (test author) | Repeated 502: exactly 2 attempts, one recorded 100 ms backoff, then PaymentUnavailable (PLAN.md L22-23). Factory exposes call history and sleeper record (L12-14). | Test 2 asserts only rejection with PaymentUnavailable (PLAN.md L33-36). | A) assert rejection + call history length 2 + sleeper record `[100]`; B) rejection + call history length 2; C) keep rejection only. | unresolved (pending R1) | — |\n\n## currentDecision: R1 — How much of the receipt contract should test 1 assert?\nHeader: R1 receipt assertion\n\nCommitment comparison (Proposed):\n```text\nCommitment                         | Source/approval or pending | Current | A          | B            | C\nReceipt is returned (truthy)       | PLAN.md L32, planned        | yes     | yes        | yes          | yes\nchargeId === \"ch_paid\"             | PLAN.md L21, pending        | no      | yes        | yes          | no\namountCents === 1000 (integer)     | PLAN.md L19-21, pending     | no      | yes        | no           | no\ncurrency === \"USD\"                 | PLAN.md L19-21, pending     | no      | yes        | no           | no\nNo extra keys on receipt           | PLAN.md L21 (exact literal) | no      | yes (deep) | no           | no\nProduction code / other tests      | PLAN.md L8, L28 approved    | as-is   | as-is      | as-is        | as-is\n```\n\nA) Deep-equal the full receipt (recommended). Replace the truthy check with an exact equality assertion against `{ chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" }`. Effort S; risk low. Pros: pins every value the plan documents; fails on a float amount, a wrong currency, or a chargeId copied from the wrong field; zero new helpers, same factory and mock. Cons: if the receipt legitimately carries additional keys the plan does not list, the literal must be widened (a 1-line fix); slightly more brittle to intentional receipt-shape changes, which is the point. Reuse: existing factory/mock. Verification coverage: full receipt contract. Completeness 10/10.\n\nB) Assert chargeId only. Keep truthy and add `receipt.chargeId === \"ch_paid\"`. Effort S; risk low. Pros: catches the most visible regression (wrong id); one extra line. Cons: amountCents and currency stay unpinned even though the plan states them to the cent; a rounding bug in amountCents passes. Reuse: existing factory/mock. Verification coverage: happy path partially pinned. Completeness 7/10.\n\nC) Keep truthy only (as planned). No change to PLAN.md test 1. Effort S (zero work); risk medium. Pros: matches PLAN.md verbatim; fastest. Cons: the test passes on any non-null return, including a receipt with wrong id, amount and currency; it cannot fail on the regression it is named for. Reuse: n/a. Verification coverage: existence only. Completeness 3/10.\n\n## Amended plan (applied decisions only)\n_No decisions applied yet. PLAN.md \"Proposed tests\" stands as the current plan until R1/R2 are answered._\n\n## NOT in scope\n- Production changes to processPayment(), the Stripe adapter, or the receipt builder (PLAN.md L8, L28; retained by HOLD SCOPE).\n- Changes to existing Stripe adapter suite or receipt-builder regressions (PLAN.md L9-11, L15).\n",
      "calls": [
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            {
              "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-UniFL6 on main, starting the /plan-ceo-review of PLAN.md.\nELI10: gstack works best when your project's CLAUDE.md includes skill routing rules, so that requests like \"review this diff\" or \"ship it\" automatically route to the right skill. This is a one-time setup prompt per project. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit will happen after this review exits plan mode, not now.\nStakes if we pick wrong: Without routing you invoke skills manually; with it, a CLAUDE.md edit and commit land in the repo. Both reversible.\nRecommendation: A because routing rules make skill use automatic and the edit is a small, reversible append.\nNote: options differ in kind, not coverage — no completeness score.\nNet: automatic skill routing vs. keeping CLAUDE.md untouched.",
              "header": "Routing",
              "multiSelect": false,
              "options": [
                {
                  "label": "Add routing rules (recommended)",
                  "description": "✅ Requests auto-route to the matching gstack skill without you naming it\n✅ One small append to CLAUDE.md, committed once; easy to revert\n❌ Adds a CLAUDE.md edit + commit to this repo (deferred until plan mode exits)"
                },
                {
                  "label": "No thanks, manual skills",
                  "description": "✅ Repo stays untouched; no commit lands from this session\n✅ You keep full control over when each skill runs\n❌ You must type /skill-name for every review, QA, or ship step"
                }
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          "answered": true,
          "failed": false,
          "answers": {
            "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count-UniFL6 on main, starting the /plan-ceo-review of PLAN.md.\nELI10: gstack works best when your project's CLAUDE.md includes skill routing rules, so that requests like \"review this diff\" or \"ship it\" automatically route to the right skill. This is a one-time setup prompt per project. Note: plan mode is active, so if you pick A the CLAUDE.md edit and commit will happen after this review exits plan mode, not now.\nStakes if we pick wrong: Without routing you invoke skills manually; with it, a CLAUDE.md edit and commit land in the repo. Both reversible.\nRecommendation: A because routing rules make skill use automatic and the edit is a small, reversible append.\nNote: options differ in kind, not coverage — no completeness score.\nNet: automatic skill routing vs. keeping CLAUDE.md untouched.": "Add routing rules (recommended)"
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          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:44:57.967Z"
        },
        {
          "sessionId": "ec00e567-b610-445b-b9e5-7de7e8d8a3e0",
          "toolUseId": "toolu_01MQt8TwzDoSUjFS7oxR7PE6",
          "questions": [
            {
              "question": "D2 — Search learnings from your other projects on this machine?\nProject/branch/task: gstack-plan-count-UniFL6 on main, /plan-ceo-review prior-learnings step.\nELI10: gstack records small lessons it learns per project (command quirks, pitfalls). It can also search lessons from your other local projects when reviewing this one. Nothing leaves your machine either way. Recommended for solo developers; skip if you work on several client codebases where mixing context would be a concern.\nStakes if we pick wrong: Enabled on a multi-client machine could surface one client's patterns while reviewing another's; disabled means each project relearns from scratch. Both are a one-line config flip.\nRecommendation: A because this is a single-developer machine with no signs of multi-client separation, and learnings compound faster across projects.\nNote: options differ in kind, not coverage — no completeness score.\nNet: faster compounding of lessons vs. strict per-project isolation.",
              "header": "Learnings",
              "multiSelect": false,
              "options": [
                {
                  "label": "Enable cross-project (recommended)",
                  "description": "✅ Lessons from other local projects apply here from the first session\n✅ Stays local; a single config value you can flip back any time\n❌ Patterns from unrelated codebases may occasionally be surfaced"
                },
                {
                  "label": "Project-scoped only",
                  "description": "✅ Strict isolation: nothing from other codebases influences this review\n✅ Safe default when you work across multiple client repositories\n❌ This project starts with zero learnings and builds them up alone"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D2 — Search learnings from your other projects on this machine?\nProject/branch/task: gstack-plan-count-UniFL6 on main, /plan-ceo-review prior-learnings step.\nELI10: gstack records small lessons it learns per project (command quirks, pitfalls). It can also search lessons from your other local projects when reviewing this one. Nothing leaves your machine either way. Recommended for solo developers; skip if you work on several client codebases where mixing context would be a concern.\nStakes if we pick wrong: Enabled on a multi-client machine could surface one client's patterns while reviewing another's; disabled means each project relearns from scratch. Both are a one-line config flip.\nRecommendation: A because this is a single-developer machine with no signs of multi-client separation, and learnings compound faster across projects.\nNote: options differ in kind, not coverage — no completeness score.\nNet: faster compounding of lessons vs. strict per-project isolation.": "Enable cross-project (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:46:04.167Z"
        },
        {
          "sessionId": "ec00e567-b610-445b-b9e5-7de7e8d8a3e0",
          "toolUseId": "toolu_01DRQdE4ZvVhDZcQJZQahqQP",
          "questions": [
            {
              "question": "D3 (ledger R1) — How much of the receipt contract should test 1 assert?\nProject/branch/task: gstack-plan-count-UniFL6 on main, HOLD SCOPE review of PLAN.md test 1 (successful charge).\nELI10: The plan documents the exact receipt a 1000-cent USD charge must return: chargeId \"ch_paid\", amountCents 1000, currency \"USD\". But test 1 only checks that *something* came back (truthy). A bug that returns the wrong id, a float amount, or the wrong currency would pass this test. The question is whether the test should pin the values the plan itself spells out.\nStakes if we pick wrong: Too weak, and a receipt regression reaches users with CI green; too strict is a one-line literal edit if the receipt shape ever legitimately grows.\nRecommendation: A because the plan already states every value to the cent, the factory already produces them, and the extra assertion is one line with no new helpers.\nCompleteness: A=10/10, B=7/10, C=3/10\nNet: an exact receipt pin (one line) vs. a test that cannot fail on the regression it is named for.",
              "header": "R1 receipt",
              "multiSelect": false,
              "options": [
                {
                  "label": "A) Deep-equal full receipt (recommended)",
                  "description": "Effort S, risk low. Assert receipt equals { chargeId: \"ch_paid\", amountCents: 1000, currency: \"USD\" } exactly.\n✅ Fails on wrong id, float/rounded amount, wrong currency, or stray extra keys\n✅ Same factory and mock as planned; no new helpers, one assertion line\n❌ If the receipt legitimately gains keys the plan omits, the literal needs a 1-line widening"
                },
                {
                  "label": "B) Assert chargeId only",
                  "description": "Effort S, risk low. Keep truthy and add receipt.chargeId === \"ch_paid\".\n✅ Catches the most visible regression (id copied from the wrong field)\n✅ Smallest change that adds any real signal\n❌ amountCents and currency stay unpinned despite being stated to the cent in the plan"
                },
                {
                  "label": "C) Keep truthy only (as planned)",
                  "description": "Effort S (zero work), risk medium. PLAN.md test 1 unchanged.\n✅ Matches PLAN.md verbatim; nothing to re-plan\n✅ Never brittle to receipt-shape changes\n❌ Passes on any non-null return; cannot detect a wrong id, amount, or currency"
                }
              ]
            }
          ],
          "answered": true,
          "failed": false,
          "answers": {
            "D3 (ledger R1) — How much of the receipt contract should test 1 assert?\nProject/branch/task: gstack-plan-count-UniFL6 on main, HOLD SCOPE review of PLAN.md test 1 (successful charge).\nELI10: The plan documents the exact receipt a 1000-cent USD charge must return: chargeId \"ch_paid\", amountCents 1000, currency \"USD\". But test 1 only checks that *something* came back (truthy). A bug that returns the wrong id, a float amount, or the wrong currency would pass this test. The question is whether the test should pin the values the plan itself spells out.\nStakes if we pick wrong: Too weak, and a receipt regression reaches users with CI green; too strict is a one-line literal edit if the receipt shape ever legitimately grows.\nRecommendation: A because the plan already states every value to the cent, the factory already produces them, and the extra assertion is one line with no new helpers.\nCompleteness: A=10/10, B=7/10, C=3/10\nNet: an exact receipt pin (one line) vs. a test that cannot fail on the regression it is named for.": "A) Deep-equal full receipt (recommended)"
          },
          "unansweredQuestionIndices": [],
          "answeredAt": "2026-09-16T09:48:20.244Z"
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  "rejectedMissingRow": {
    "name": "distinct-attempt2",
    "originalOutcome": "FAIL",
    "paidPassCredit": 0,
    "source": "Please review this plan thoroughly in HOLD SCOPE mode. As you go, write your plan-mode plan to /tmp/g-fmjf7yah/gstack-paid-shard-RjoxNc/tmp/gstack-e2e-plan-ceo-tdJPWC/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.",
    "sourceSha256": "9e39d0f224490bfe9636210385b3c264513f8f3cb8a785ed61ac5b2c2d37a6f2",
    "calls": [
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        "toolUseId": "toolu_01YRwwrMcdFck9FdQmvrQJAi",
        "questions": [
          {
            "question": "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count fixture on `main`, about to run /plan-ceo-review in HOLD SCOPE.\nELI10: gstack has a dozen skills (review, ship, investigate, etc.). A short routing section in CLAUDE.md tells Claude which skill to reach for when you say things like \"ship this\" or \"why is this failing\", so you don't have to type slash commands. Without it, skills only run when you invoke them by name.\nStakes if we pick wrong: Low either way. Adding it means one extra section in CLAUDE.md and a commit; skipping it means you invoke skills manually. This is a one-time prompt per project.\nRecommendation: A because it is a two-way door and the routing makes the rest of gstack more useful. Note: plan mode is active, so the CLAUDE.md write and commit would happen after this review exits plan mode, not now.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience of auto-routing vs. keeping CLAUDE.md untouched.",
            "header": "Routing",
            "multiSelect": false,
            "options": [
              {
                "label": "Add routing rules (recommended)",
                "description": "✅ Requests like \"review this diff\" or \"ship it\" auto-route to the matching gstack skill without slash commands.\n✅ Two-way door: one appended section in CLAUDE.md, trivially removable later.\n❌ Adds ~20 lines to CLAUDE.md and a chore commit; deferred until plan mode exits."
              },
              {
                "label": "No thanks, invoke manually",
                "description": "✅ CLAUDE.md stays exactly as-is; no commit on this fixture repo.\n✅ Re-enable any time via gstack-config set routing_declined false.\n❌ You must type /skill-name for every gstack workflow; nothing routes automatically."
              }
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        "answered": true,
        "failed": false,
        "answers": {
          "D1 — Add gstack skill routing rules to this project's CLAUDE.md?\nProject/branch/task: gstack-plan-count fixture on `main`, about to run /plan-ceo-review in HOLD SCOPE.\nELI10: gstack has a dozen skills (review, ship, investigate, etc.). A short routing section in CLAUDE.md tells Claude which skill to reach for when you say things like \"ship this\" or \"why is this failing\", so you don't have to type slash commands. Without it, skills only run when you invoke them by name.\nStakes if we pick wrong: Low either way. Adding it means one extra section in CLAUDE.md and a commit; skipping it means you invoke skills manually. This is a one-time prompt per project.\nRecommendation: A because it is a two-way door and the routing makes the rest of gstack more useful. Note: plan mode is active, so the CLAUDE.md write and commit would happen after this review exits plan mode, not now.\nNote: options differ in kind, not coverage — no completeness score.\nNet: convenience of auto-routing vs. keeping CLAUDE.md untouched.": "Add routing rules (recommended)"
        },
        "unansweredQuestionIndices": [],
        "answeredAt": "2026-09-16T09:45:39.567Z"
      },
      {
        "sessionId": "013febcd-f6fc-4d76-a99d-b60c3430bc52",
        "toolUseId": "toolu_0133Sr6Nsc1J33LVir66X6PE",
        "questions": [
          {
            "question": "D2 — How should the new handler be wired into webhook ingress? (ledger row D2)\nProject/branch/task: Payment Processing Integration plan on `main`, HOLD SCOPE CEO review.\nELI10: Your app already has a front door for Stripe webhooks, the `WebhookDispatcher`, which routes each event type to its handler and logs the trip. The plan proposes a new handler class but wants to skip that front door and wire it straight from ingress \"for clean namespace separation\". The namespace win is already banked by the approved class name `Webhooks::StripePaymentWebhookHandler` (PLAN.md:100-103), so the open question is purely routing: one path or two.\nStakes if we pick wrong: two routing paths means every retained guard (signature, dedup, lock, ownership; PLAN.md:38-39) has to be re-proven on the second path and kept in sync forever; the alternative risk is a dispatcher registration API that doesn't fit and needs a small change.\nRecommendation: A because it reuses proven routing (Engineering preference: DRY, smallest clear change) and the feature flag then toggles a registration rather than a route.\nNote: options differ in kind, not coverage — no completeness score.\nNet: hard entry-point boundary vs. one routing path that everything else already trusts.",
            "header": "Routing",
            "multiSelect": false,
            "options": [
              {
                "label": "A) Register with dispatcher (recommended)",
                "description": "New Webhooks::StripePaymentWebhookHandler registered for payment_intent.succeeded through the existing WebhookDispatcher. Effort S, risk low.\n✅ Reuses the dispatcher's routing, logging and handler-identity trace; guards (PLAN.md:38-39) stay on the one proven path.\n✅ Feature flag toggles a registration, not a route; rollback is the existing tested path unchanged.\n❌ Namespace separation is by module name only; dispatcher registration API may need a small accommodation."
              },
              {
                "label": "B) Separate class, bypass dispatcher",
                "description": "Handler wired directly from ingress, as the plan is written. Effort M, risk medium.\n✅ Hard boundary from the Stripe library namespace at the entry point, not just the class name.\n✅ No changes to WebhookDispatcher at all.\n❌ Two routing paths to keep in sync; every retained guard must be re-verified on the new path with new routing tests."
              },
              {
                "label": "C) No new class, orchestrate in dispatcher",
                "description": "Skip the handler class; put orchestration inside WebhookDispatcher. Effort S, risk medium.\n✅ Smallest possible diff, one file touched.\n✅ Nothing new to register or flag-route.\n❌ Contradicts the settled class-name decision (PLAN.md:100-103) and grows the dispatcher into business logic; rollout attribution loses the class boundary."
              }
            ]
          }
        ],
        "answered": true,
        "failed": false,
        "answers": {
          "D2 — How should the new handler be wired into webhook ingress? (ledger row D2)\nProject/branch/task: Payment Processing Integration plan on `main`, HOLD SCOPE CEO review.\nELI10: Your app already has a front door for Stripe webhooks, the `WebhookDispatcher`, which routes each event type to its handler and logs the trip. The plan proposes a new handler class but wants to skip that front door and wire it straight from ingress \"for clean namespace separation\". The namespace win is already banked by the approved class name `Webhooks::StripePaymentWebhookHandler` (PLAN.md:100-103), so the open question is purely routing: one path or two.\nStakes if we pick wrong: two routing paths means every retained guard (signature, dedup, lock, ownership; PLAN.md:38-39) has to be re-proven on the second path and kept in sync forever; the alternative risk is a dispatcher registration API that doesn't fit and needs a small change.\nRecommendation: A because it reuses proven routing (Engineering preference: DRY, smallest clear change) and the feature flag then toggles a registration rather than a route.\nNote: options differ in kind, not coverage — no completeness score.\nNet: hard entry-point boundary vs. one routing path that everything else already trusts.": "A) Register with dispatcher (recommended)"
        },
        "unansweredQuestionIndices": [],
        "answeredAt": "2026-09-16T09:49:05.890Z"
      },
      {
        "sessionId": "013febcd-f6fc-4d76-a99d-b60c3430bc52",
        "toolUseId": "toolu_01DqqtLvb5uV9JMMMzYXAiGo",
        "questions": [
          {
            "question": "D3 — What should the handler do when the email send raises after the payment update has committed? (ledger row D3, Section 2)\nProject/branch/task: Payment Processing Integration plan on `main`, HOLD SCOPE CEO review.\nELI10: The handler marks the user paid (committed to the DB), then sends the receipt inline. The plan says \"no error handling on the email leg\" (PLAN.md:116). The shared mail client raises MailTimeout after 1 second or rethrows provider errors, and it has ALREADY written a durable retry record before raising (PLAN.md:88-89). With no rescue, that exception reaches the ingress wrapper, which logs \"webhook processing failed\" and returns 500 to Stripe for a payment that actually succeeded. Stripe then retries for up to 72 hours. Whether those retries re-run your handler depends on whether the dedup guard records completion after a post-commit raise, which the plan never states (PLAN.md:70-73 only covers rolled-back DB attempts).\nStakes if we pick wrong: the failed-webhook pager fires during every mail-provider blip even though no payment is at risk, and a mail outage becomes a 72-hour Stripe retry storm holding per-user locks and DB connections; or, with a catch-all, real bugs in the email leg get swallowed.\nRecommendation: A because it names the two exception classes, keeps DB errors loud, and makes the HTTP status tell the truth (Engineering preference: every error has a name; zero silent failures).\nCompleteness: A=10/10, B=5/10, C=3/10\nNet: an honest 200 plus one named rescue block vs. a misleading 500 whose downstream behavior nobody has verified.",
            "header": "Email leg",
            "multiSelect": false,
            "options": [
              {
                "label": "A) Rescue named mail errors, 200 (recommended)",
                "description": "Rescue only MailTimeout + the client's provider error class, only around the send call, only after commit. Emit one structured warning (event id, user id, PaymentIntent id, exception class, 'payment committed, receipt queued for retry'), increment payment_receipt_send_failed, let the handler finish so dedup records completion and Stripe gets 200. DB errors stay unrescued. Tests: mail timeout -> user paid, 200, warning, counter; DB error -> still raises. Effort S / risk low. (human: ~2h / CC: ~10min)\n✅ Status code matches reality; failed-webhook alert reserved for real payment failures.\n✅ Receipt still flows through the existing retry record, backlog alert and runbook; no retry amplification.\n❌ Adds one rescue block and one counter; depends on the client writing the retry record before rethrow, so that must be asserted in the test."
              },
              {
                "label": "B) Keep rethrow as written (500)",
                "description": "No rescue; the mail exception propagates and Stripe receives 500. Zero code. Effort S / risk medium.\n✅ No new handler code; if the dedup guard re-invokes on retry, Stripe's retry may deliver the receipt for free.\n✅ Every failure is maximally loud, including the pager.\n❌ 500 for a committed payment; pager fires on notification issues; behavior hinges on unverified dedup-marker semantics; up to 72h of retries holding locks during a mail outage."
              },
              {
                "label": "C) Catch-all rescue around email",
                "description": "rescue StandardError around the send, log generically, continue. Effort S / risk medium.\n✅ Never returns 500 because of email; simplest possible code.\n✅ No dependency on knowing the client's exception classes.\n❌ Swallows programming errors and unexpected classes; a mail client contract change goes unnoticed; violates 'every error has a name'."
              }
            ]
          }
        ],
        "answered": true,
        "failed": false,
        "answers": {
          "D3 — What should the handler do when the email send raises after the payment update has committed? (ledger row D3, Section 2)\nProject/branch/task: Payment Processing Integration plan on `main`, HOLD SCOPE CEO review.\nELI10: The handler marks the user paid (committed to the DB), then sends the receipt inline. The plan says \"no error handling on the email leg\" (PLAN.md:116). The shared mail client raises MailTimeout after 1 second or rethrows provider errors, and it has ALREADY written a durable retry record before raising (PLAN.md:88-89). With no rescue, that exception reaches the ingress wrapper, which logs \"webhook processing failed\" and returns 500 to Stripe for a payment that actually succeeded. Stripe then retries for up to 72 hours. Whether those retries re-run your handler depends on whether the dedup guard records completion after a post-commit raise, which the plan never states (PLAN.md:70-73 only covers rolled-back DB attempts).\nStakes if we pick wrong: the failed-webhook pager fires during every mail-provider blip even though no payment is at risk, and a mail outage becomes a 72-hour Stripe retry storm holding per-user locks and DB connections; or, with a catch-all, real bugs in the email leg get swallowed.\nRecommendation: A because it names the two exception classes, keeps DB errors loud, and makes the HTTP status tell the truth (Engineering preference: every error has a name; zero silent failures).\nCompleteness: A=10/10, B=5/10, C=3/10\nNet: an honest 200 plus one named rescue block vs. a misleading 500 whose downstream behavior nobody has verified.": "A) Rescue named mail errors, 200 (recommended)"
        },
        "unansweredQuestionIndices": [],
        "answeredAt": "2026-09-16T09:51:27.187Z"
      }
    ],
    "plans": [
      "# Plan: Payment Processing Integration — CEO Review (HOLD SCOPE)\n\nReviewed plan: `PLAN.md` (commit f30cc17, branch `main`). Mode: HOLD SCOPE (explicit user instruction).\nReview depth: scope and feasibility decisions plus the repairs needed to meet the plan's own stated invariants. No expansions.\n\n## Context\n\nThe approved motivation (PLAN.md:8-11) is to move payment orchestration out of the prior library-adapter handler into application-owned code while keeping payment and receipt behavior identical. The plan sits inside a large set of retained contracts (signature verification, event dedup, per-user lock, ownership guard, recipient policy, idempotent mail sends, feature flag + rollback). The four short proposal sections (Architecture, Database access, Webhook fan-out, Tests, Performance; PLAN.md:105-123) are where the risk lives. This review holds scope and traces every failure path of those four sections against the retained contracts.\n\nRepo audit: fixture repo with one commit (`f30cc17 Seed review plan`), files `PLAN.md` and `CLAUDE.md` only. No remote, no TODOS.md, no design doc, no handoff note, no stashes, no FIXME/TODO markers, no prior learnings. Base branch: `main`. Handler source is not in this repo; every claim about existing code is taken from PLAN.md's \"Existing contracts retained\" and marked as such.\n\n## Step 0 evidence\n\n### 0A. Premise Challenge\n1. Right problem? Yes, narrowly. Moving orchestration into app-owned code is a sound ownership move. But the plan's proposals re-litigate solved problems: the shared `WebhookDispatcher` already exists (PLAN.md:10), the ORM/lookup layer already treats user IDs as opaque TEXT (PLAN.md:24-26), the mail client already has idempotency and retry records (PLAN.md:85-91). The new class should be thin orchestration, not a second infrastructure.\n2. Outcome: identical paid-status update and one receipt per PaymentIntent, now in code the team owns. The plan reaches it directly except where it weakens guarantees (raw SQL, unnamed email exceptions, no tests).\n3. Do nothing: the prior library-adapter handler keeps working. Pain is ownership/maintainability, not a live outage. That argues for a small, safe diff, not a shortcut-laden one.\n\nLandscape (WebSearch, Aside unavailable): the 2026 consensus Stripe pattern is verify → dedup on event.id → transactional state change → side effects via job → 200 within 10s. This plan already has verify/dedup/lock from retained contracts; the inline email is bounded (1s mail deadline, 2s DB/ingress budget, 10s webhook deadline). First-principles delta: the danger is not latency, it is semantics: an email exception after a committed payment surfaces as a generic HTTP 500.\n\n### 0B. Existing Code Leverage (from PLAN.md contracts; code not in repo)\n| Sub-problem | Existing code | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware (:12-13) | Yes (unchanged) |\n| Event filtering to `payment_intent.succeeded` | ingress (:14-15) | Yes |\n| user_id extraction, nil/empty guard | payload adapter (:16-20) | Yes |\n| PaymentIntent↔user ownership check | ingress ownership guard (:27-31) | Yes |\n| Dedup + per-user lock | event guard (:32-39) | Yes |\n| Unknown/deleted user | lookup-result guard (:43-44) | Yes |\n| Missing email address | recipient-policy helper (:45-51) | Yes |\n| Idempotent send, retry record, failure metrics | shared mail client (:85-91) | Yes, but handler adds no rescue (:116) |\n| Correlated tracing, alerts, runbooks | DB/mail clients, ingress wrapper (:58-69) | Yes |\n| Handler routing / namespace | `WebhookDispatcher` (:10, :107) | **No — bypassed. Open decision D2** |\n| User lookup by opaque TEXT id | existing lookup (:24-26) | **No — raw SQL fragment proposed (:111-112)** |\n| Feature flag + rollback + staging replay | deployment (:74-80) | Yes |\n\nRebuilding: the raw SQL lookup rebuilds a lookup that already exists and drops its safety. The dispatcher bypass rebuilds routing. Neither has a stated reason beyond \"clean namespace separation\", which the approved name `Webhooks::StripePaymentWebhookHandler` (:100-103) already delivers regardless of routing.\n\n### 0C. Dream State Mapping\n```\n  CURRENT STATE                        THIS PLAN                          12-MONTH IDEAL\n  Library-adapter handler owns   --->  App-owned handler class,     --->  All webhook handlers app-owned,\n  payment orchestration; shared        routed (D2 pending), thin          registered through one dispatcher,\n  guards/clients around it             orchestration over existing        each with unit tests for the four\n                                       clients; email failure named       data paths; email fan-out async\n                                       and observable; tests TBD          behind the same idempotency key\n```\nThe plan moves toward the ideal only if the handler stays thin and routed through the shared dispatcher; a bypass plus raw SQL moves away from it (second routing path, second lookup style).\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (preamble onboarding) | gstack routing rules in CLAUDE.md | none | append routing section + chore commit | approved | User chose \"Add routing rules\" in D1. Plan mode blocks the CLAUDE.md write now; execute after plan mode exits. |\n| D2 (Step 0D / Section 1) | PLAN.md:10-11, :100-108: dispatcher available; bypass is an open architectural choice; class name settled | Prior library-adapter handler, routed via existing ingress | A) `Webhooks::StripePaymentWebhookHandler` registered with `WebhookDispatcher`; B) separate class bypassing dispatcher (as written); C) no new class, orchestration inside dispatcher | unresolved | pending |\n\n### currentDecision (D2)\nQuestion: How should the new handler be wired into webhook ingress?\n\nCommitment comparison:\n```\nCommitment                         | Source/approval or pending | Current            | A                         | B                         | C\nHandler class name                 | approved (:100-103)        | n/a                | Webhooks::StripePayment…  | Webhooks::StripePayment…  | none (dispatcher method)\nRouting path                       | pending (:10-11, :107)     | ingress→adapter    | dispatcher→handler        | ingress→handler directly  | dispatcher inline\nRetained guards unchanged          | approved (:38-39)          | yes                | yes                       | yes (must be re-verified) | yes\nFeature flag / rollback path       | approved (:74-75)          | flag selects prior | flag selects A vs prior   | flag selects B vs prior   | flag selects C vs prior\nHandler-identity trace attribution | approved (:98-99)          | yes                | yes                       | yes                       | weaker (no class boundary)\n```\n\nA) Register with `WebhookDispatcher` (recommended). Summary: new `Webhooks::StripePaymentWebhookHandler` class, registered for `payment_intent.succeeded` through the existing dispatcher; no second routing path. Effort: S. Risk: low. Pros: reuses proven routing and its logging; the flag toggles a registration, not a route; new engineers find every handler in one place. Cons: namespace separation is by module name only, not by entry point; dispatcher registration API must accommodate the new class. Reuse: dispatcher, all guards. Verification: existing dispatcher routing tests plus handler unit tests (pending D5).\nB) Separate class bypassing the dispatcher (as written). Summary: handler wired directly from ingress. Effort: M. Risk: medium. Pros: hard boundary from the library namespace; no dispatcher changes. Cons: two routing paths to keep in sync; every retained guard (:38-39) must be re-proven on the new path; \"clean namespace\" is already achieved by the approved class name. Reuse: guards only. Verification: new routing tests required.\nC) No new class; add orchestration inside the dispatcher. Summary: skip the handler class entirely. Effort: S. Risk: medium. Pros: smallest diff. Cons: contradicts the settled naming decision (:100-103); grows the dispatcher into business logic; weaker rollout attribution. Reuse: dispatcher. Verification: dispatcher tests.\n\nNote: options differ in kind, not coverage — no completeness score.\n\n## Step 0E. Mode\nHOLD SCOPE, explicit user instruction (\"review this plan thoroughly in HOLD SCOPE mode\"). No mode question asked. Prerequisite `/office-hours` skipped by explicit user instruction.\n\n## NOT in scope\n_(populated as decisions land)_\n\n## Review sections\n_(pending: Sections 1–11 run after Step 0 decisions)_\n",
      "# Plan: Payment Processing Integration — CEO Review (HOLD SCOPE)\n\nReviewed plan: `PLAN.md` (commit f30cc17, branch `main`). Mode: HOLD SCOPE (explicit user instruction).\nReview depth: scope and feasibility decisions plus the repairs needed to meet the plan's own stated invariants. No expansions.\n\n## Context\n\nThe approved motivation (PLAN.md:8-11) is to move payment orchestration out of the prior library-adapter handler into application-owned code while keeping payment and receipt behavior identical. The plan sits inside a large set of retained contracts (signature verification, event dedup, per-user lock, ownership guard, recipient policy, idempotent mail sends, feature flag + rollback). The four short proposal sections (Architecture, Database access, Webhook fan-out, Tests, Performance; PLAN.md:105-123) are where the risk lives. This review holds scope and traces every failure path of those four sections against the retained contracts.\n\nRepo audit: fixture repo with one commit (`f30cc17 Seed review plan`), files `PLAN.md` and `CLAUDE.md` only. No remote, no TODOS.md, no design doc, no handoff note, no stashes, no FIXME/TODO markers, no prior learnings. Base branch: `main`. Handler source is not in this repo; every claim about existing code is taken from PLAN.md's \"Existing contracts retained\" and marked as such.\n\n## Step 0 evidence\n\n### 0A. Premise Challenge\n1. Right problem? Yes, narrowly. Moving orchestration into app-owned code is a sound ownership move. But the plan's proposals re-litigate solved problems: the shared `WebhookDispatcher` already exists (PLAN.md:10), the ORM/lookup layer already treats user IDs as opaque TEXT (PLAN.md:24-26), the mail client already has idempotency and retry records (PLAN.md:85-91). The new class should be thin orchestration, not a second infrastructure.\n2. Outcome: identical paid-status update and one receipt per PaymentIntent, now in code the team owns. The plan reaches it directly except where it weakens guarantees (raw SQL, unnamed email exceptions, no tests).\n3. Do nothing: the prior library-adapter handler keeps working. Pain is ownership/maintainability, not a live outage. That argues for a small, safe diff, not a shortcut-laden one.\n\nLandscape (WebSearch, Aside unavailable): the 2026 consensus Stripe pattern is verify → dedup on event.id → transactional state change → side effects via job → 200 within 10s. This plan already has verify/dedup/lock from retained contracts; the inline email is bounded (1s mail deadline, 2s DB/ingress budget, 10s webhook deadline). First-principles delta: the danger is not latency, it is semantics: an email exception after a committed payment surfaces as a generic HTTP 500.\n\n### 0B. Existing Code Leverage (from PLAN.md contracts; code not in repo)\n| Sub-problem | Existing code | Plan reuses? |\n|---|---|---|\n| Signature verification | ingress middleware (:12-13) | Yes (unchanged) |\n| Event filtering to `payment_intent.succeeded` | ingress (:14-15) | Yes |\n| user_id extraction, nil/empty guard | payload adapter (:16-20) | Yes |\n| PaymentIntent↔user ownership check | ingress ownership guard (:27-31) | Yes |\n| Dedup + per-user lock | event guard (:32-39) | Yes |\n| Unknown/deleted user | lookup-result guard (:43-44) | Yes |\n| Missing email address | recipient-policy helper (:45-51) | Yes |\n| Idempotent send, retry record, failure metrics | shared mail client (:85-91) | Yes, but handler adds no rescue (:116) |\n| Correlated tracing, alerts, runbooks | DB/mail clients, ingress wrapper (:58-69) | Yes |\n| Handler routing / namespace | `WebhookDispatcher` (:10, :107) | **No — bypassed. Open decision D2** |\n| User lookup by opaque TEXT id | existing lookup (:24-26) | **No — raw SQL fragment proposed (:111-112)** |\n| Feature flag + rollback + staging replay | deployment (:74-80) | Yes |\n\nRebuilding: the raw SQL lookup rebuilds a lookup that already exists and drops its safety. The dispatcher bypass rebuilds routing. Neither has a stated reason beyond \"clean namespace separation\", which the approved name `Webhooks::StripePaymentWebhookHandler` (:100-103) already delivers regardless of routing.\n\n### 0C. Dream State Mapping\n```\n  CURRENT STATE                        THIS PLAN                          12-MONTH IDEAL\n  Library-adapter handler owns   --->  App-owned handler class,     --->  All webhook handlers app-owned,\n  payment orchestration; shared        routed (D2 pending), thin          registered through one dispatcher,\n  guards/clients around it             orchestration over existing        each with unit tests for the four\n                                       clients; email failure named       data paths; email fan-out async\n                                       and observable; tests TBD          behind the same idempotency key\n```\nThe plan moves toward the ideal only if the handler stays thin and routed through the shared dispatcher; a bypass plus raw SQL moves away from it (second routing path, second lookup style).\n\n## Decision ledger\n\n| ID and owner | Contract and evidence | Current | Proposed | Status | Exact approval and scope |\n|---|---|---|---|---|---|\n| D1 (preamble onboarding) | gstack routing rules in CLAUDE.md | none | append routing section + chore commit | approved | User chose \"Add routing rules\" in D1. Plan mode blocks the CLAUDE.md write now; execute after plan mode exits. |\n| D2 (Step 0D / Section 1) | PLAN.md:10-11, :100-108: dispatcher available; bypass is an open architectural choice; class name settled | Prior library-adapter handler, routed via existing ingress | A) `Webhooks::StripePaymentWebhookHandler` registered with `WebhookDispatcher`; B) separate class bypassing dispatcher (as written); C) no new class, orchestration inside dispatcher | approved | User chose A in D2. Scope: new class registered for `payment_intent.succeeded` through the existing dispatcher; no direct ingress wiring; dispatcher routing tests cover the registration. Architecture section of PLAN.md (:105-108) is amended accordingly. |\n\n### currentDecision (D2)\nQuestion: How should the new handler be wired into webhook ingress?\n\nCommitment comparison:\n```\nCommitment                         | Source/approval or pending | Current            | A                         | B                         | C\nHandler class name                 | approved (:100-103)        | n/a                | Webhooks::StripePayment…  | Webhooks::StripePayment…  | none (dispatcher method)\nRouting path                       | pending (:10-11, :107)     | ingress→adapter    | dispatcher→handler        | ingress→handler directly  | dispatcher inline\nRetained guards unchanged          | approved (:38-39)          | yes                | yes                       | yes (must be re-verified) | yes\nFeature flag / rollback path       | approved (:74-75)          | flag selects prior | flag selects A vs prior   | flag selects B vs prior   | flag selects C vs prior\nHandler-identity trace attribution | approved (:98-99)          | yes                | yes                       | yes                       | weaker (no class boundary)\n```\n\nA) Register with `WebhookDispatcher` (recommended). Summary: new `Webhooks::StripePaymentWebhookHandler` class, registered for `payment_intent.succeeded` through the existing dispatcher; no second routing path. Effort: S. Risk: low. Pros: reuses proven routing and its logging; the flag toggles a registration, not a route; new engineers find every handler in one place. Cons: namespace separation is by module name only, not by entry point; dispatcher registration API must accommodate the new class. Reuse: dispatcher, all guards. Verification: existing dispatcher routing tests plus handler unit tests (pending D5).\nB) Separate class bypassing the dispatcher (as written). Summary: handler wired directly from ingress. Effort: M. Risk: medium. Pros: hard boundary from the library namespace; no dispatcher changes. Cons: two routing paths to keep in sync; every retained guard (:38-39) must be re-proven on the new path; \"clean namespace\" is already achieved by the approved class name. Reuse: guards only. Verification: new routing tests required.\nC) No new class; add orchestration inside the dispatcher. Summary: skip the handler class entirely. Effort: S. Risk: medium. Pros: smallest diff. Cons: contradicts the settled naming decision (:100-103); grows the dispatcher into business logic; weaker rollout attribution. Reuse: dispatcher. Verification: dispatcher tests.\n\nNote: options differ in kind, not coverage — no completeness score.\n\n## Step 0E. Mode\nHOLD SCOPE, explicit user instruction (\"review this plan thoroughly in HOLD SCOPE mode\"). No mode question asked. Prerequisite `/office-hours` skipped by explicit user instruction.\n\n## Step 0G. HOLD SCOPE checks\n1. Complexity: ~3-5 files (handler class, dispatcher registration, flag config, tests pending D5), 1 new class. Below the 8-file / 2-class threshold. No challenge.\n2. Minimum change: one thin handler class over existing clients + one dispatcher registration. Nothing in the accepted scope is deferrable without blocking the goal; no defer/keep questions raised.\n3. Invariants kept: identical paid-status update, one receipt per PaymentIntent, all retained guards unchanged. Repairs needed to meet them (raw SQL, unnamed email exceptions, missing tests, unbounded order loop) are reviewed in Sections 2-7 with their own decisions.\n\n## Step 0I. Temporal Interrogation (human hours; CC + gstack ≈ 30-60 min total)\n```\n  HOUR 1 (foundations):   Dispatcher registration API for a new handler class; the feature-flag\n                          key that selects prior vs new handler; the existing lookup finder that\n                          accepts opaque TEXT ids; the mail client's exception classes (MailTimeout\n                          + provider error class).\n  HOUR 2-3 (core logic):  Does the dedup guard record completion when the handler raises AFTER the\n                          DB commit? PLAN.md:70-73 covers DB failures only. This decides whether an\n                          email exception causes a re-invocation on Stripe retry or a swallowed\n                          duplicate. Must be verified in the guard's source before choosing the email\n                          leg behavior (D3).\n  HOUR 4-5 (integration): Order loop runs inside the 2s DB/ingress budget and the per-user lock; a\n                          user with hundreds of orders can exhaust the budget -> 500 -> Stripe retries\n                          the same expensive path (D6). Staging replay checklist (:76-78) must include\n                          a hostile user_id string and a mail-timeout injection.\n  HOUR 6+ (polish/tests): Unit tests for the four data paths per codepath (D5); a routing test that\n                          the flag selects the new registration; a regression test that a user_id\n                          containing quotes/semicolons is treated as a literal.\n```\nFeasibility blockers resolved through 0D: D2 (routing). Remaining choices, owned by their sections: D3 email leg (Section 2), D4 lookup query (Section 3), D5 tests (Section 6), D6 order fetch (Section 7).\n\n## NOT in scope\n_(populated as decisions land)_\n\n## Review sections\n\n### Section 1: Architecture Review\n**Current scope:** HOLD SCOPE; approved D2-A (handler registered with dispatcher). Pending D3-D6.\n\nDependency graph (after D2-A):\n```\n  Stripe ──POST──▶ ingress middleware ──▶ payload adapter ──▶ ownership guard ──▶ event guard\n                   (signature verify)     (userId extract,    (PI↔user binding)   (dedup by event.id,\n                   (event-type filter)     nil/empty -> 200)   (mismatch -> 200)    per-user lock)\n                                                                                        │\n                                                                                        ▼\n                                                                              WebhookDispatcher\n                                                                          ┌─────────┴──────────┐\n                                                           flag=prior     │                    │  flag=new\n                                                                          ▼                    ▼\n                                                              prior library-adapter   Webhooks::StripePaymentWebhookHandler   <-- NEW\n                                                                   handler                     │\n                                                                                 ┌─────────────┼──────────────┐\n                                                                                 ▼             ▼              ▼\n                                                                           DB client     orders lookup    mail client\n                                                                        (user lookup,    (loop, D6)      (1s deadline,\n                                                                         update paid)                     idempotency key,\n                                                                                                          retry record)\n```\nBefore/after coupling: before, only the prior handler depended on DB + mail clients. After, the new handler depends on dispatcher registration, DB client, orders lookup and mail client. Justified: it is the same set the prior handler used; D2-A adds no new coupling to ingress. The rejected bypass (B) would have coupled ingress directly to the handler.\n\nData flow, four paths (user_id → lookup → update → email):\n```\n  HAPPY:  userId \"u_42\" ──▶ lookup finds user ──▶ update paid + PI id (commit) ──▶ orders loaded ──▶ one receipt sent ──▶ 200\n  NIL:    metadata.user_id missing/nil ──▶ adapter acks 200 + warning (PLAN.md:19-20) ──▶ handler NOT invoked\n  EMPTY:  metadata.user_id \"\" ──▶ same adapter path, 200 + warning ──▶ handler NOT invoked\n          orders = [] ──▶ one receipt with empty summary (PLAN.md:81-84) ──▶ 200\n          email nil/\"\" ──▶ recipient policy: skipped_missing_address, skip record + warning + counter, processing continues (PLAN.md:45-48)\n  ERROR:  DB lookup/update raises ──▶ propagates to ingress ──▶ 500 ──▶ Stripe retries; completion not recorded (PLAN.md:70-73)   OK\n          mail client raises MailTimeout/provider error AFTER commit ──▶ plan: no rescue (:116) ──▶ 500 to Stripe for a COMMITTED payment ──▶ Section 2, D3\n          hostile userId string ──▶ raw SQL fragment (:111-112) ──▶ injection ──▶ Section 3, D4\n```\n\nState machine (user payment state; the only stateful object the handler mutates):\n```\n  [unpaid] ──payment_intent.succeeded (event E1)──▶ [paid, pi=PI1]\n  [paid, pi=PI1] ──same PI1 again (retry/dup)──▶ [paid, pi=PI1]   (idempotent assignment, PLAN.md:40-42)\n  [paid, pi=PI1] ──different PI2 for same user──▶ [paid, pi=PI2]  (allowed by existing update; ownership guard binds PI to user, not user to one PI)\n  Impossible: two concurrent updates interleaving -> prevented by per-user lock (PLAN.md:32-37)\n  Impossible: update on deleted user -> prevented by lock ordering with account deletion (PLAN.md:54-57)\n```\n\nScaling: 10x load: per-user lock serializes per user, so throughput scales with distinct users; the order loop (D6) is the first thing to blow the 2s budget for heavy users. 100x: DB connection pool held during the inline 1s mail call becomes the bottleneck; that is a retained design choice (inline email) and is out of HOLD scope to change, but the rescue behavior (D3) determines whether a mail outage turns into a 500 storm and Stripe retry amplification.\n\nSingle points of failure: DB (retained), mail provider (retained; failure must not fail the payment: D3), dispatcher registration (new; a mis-registration means the flag selects nothing: covered by routing test).\n\nSecurity architecture: only Stripe (signature-verified) can reach the handler; the only external input reaching business code is `metadata.user_id`, already ownership-checked against the PI binding. The handler can change one user's payment_status and send one email. The raw SQL fragment is the single new attack surface (Section 3).\n\nProduction failure scenario per integration point: DB timeout mid-update → 500, retry, safe. Mail provider 5xx/timeout → MailTimeout after 1s → today's plan returns 500 for a committed payment; Stripe retries for up to 72h; whether the handler re-runs depends on dedup-marker semantics after a post-commit raise (unverified, see 0I). Dispatcher registration missing under flag=new → events acknowledged with no handler? Must be a loud failure: routing test + the existing \"failed webhook processing\" alert.\n\nRollback: existing feature flag flips back to the prior handler, documented and tested (PLAN.md:74-75). No migrations. Minutes. **OK**.\n\nFindings: **WARNING** dispatcher bypass (resolved by D2-A). **CRITICAL GAP** email leg semantics (owned by Section 2). **CRITICAL GAP** raw SQL lookup (owned by Section 3). **WARNING** order loop vs 2s budget (owned by Section 7).\nDecision gate: D2 settled (answer A); applied above. No further Section 1 decision.\n\n### Section 2: Error & Rescue Map\n```\n  METHOD/CODEPATH                                  | WHAT CAN GO WRONG                          | EXCEPTION CLASS\n  -------------------------------------------------|--------------------------------------------|---------------------------\n  WebhookDispatcher registration (flag=new)        | handler not registered / wrong event key   | (silent: event acked, nothing runs) <- must be a test failure\n  Handler#call -> user lookup                      | DB timeout / pool exhausted                | DB timeout / pool error (existing client classes)\n                                                   | user not found / deleted                   | nil result -> existing lookup-result guard (:43-44)\n                                                   | hostile user_id in raw SQL fragment        | SQL syntax error OR silent injection (Section 3, D4)\n  Handler#call -> update paid + PI id              | DB failure mid-transaction                 | DB error, rolled back (:70-73)\n  Handler#call -> orders loop                      | N queries exceed 2s DB budget              | deadline/timeout error -> 500 (Section 7, D6)\n  Handler#call -> recipient policy                 | nil/empty email                            | none; skipped_missing_address record (:45-48)\n  Handler#call -> mail client send                 | provider timeout (1s deadline)             | MailTimeout (:92-93)\n                                                   | provider 5xx / 4xx / auth                  | provider error class (rethrown unchanged, :52-53, :62-63)\n  -------------------------------------------------|--------------------------------------------|---------------------------\n\n  EXCEPTION CLASS                | RESCUED IN HANDLER?         | RESCUE ACTION                                   | USER / STRIPE SEES\n  -------------------------------|-----------------------------|-------------------------------------------------|---------------------------------\n  DB timeout / pool / error      | N (correct: propagate)      | ingress wrapper logs, 500, Stripe retries       | retry; payment lands on retry   OK\n  nil lookup result              | Y (existing guard)          | 200, log, stop                                   | nothing (correct)               OK\n  SQL error from hostile string  | N                           | 500 + Stripe retries a poisoned event forever   | retry storm on one event        GAP -> D4\n  order-loop deadline            | N                           | 500 + retry of the same expensive path          | heavy user never gets paid state GAP -> D6\n  MailTimeout / provider error   | N <- as written (:116)      | none; 500 for a COMMITTED payment               | Stripe retries; outcome depends on dedup marker after post-commit raise (unverified)  GAP -> D3\n  skipped_missing_address        | n/a (no exception)          | skip record + warning + counter                 | receipt via runbook retry       OK\n```\nAnalysis of the email gap: the failure is not silent (mail failure-rate alert, retry record, correlated traces all fire, PLAN.md:60-69, :85-91). The defect is semantic: the handler raises after the payment is committed, so the retained ingress wrapper reports \"webhook processing failed\" and returns 500 although the payment succeeded. Consequences: (1) the failed-webhook alert fires for a notification problem, muddying the incident runbook's first signal; (2) Stripe retries for up to 72h; whether those retries re-run the handler depends on whether the dedup guard records completion when the handler raises after commit, which PLAN.md:70-73 does not specify (it only covers rolled-back DB attempts); (3) if the handler does re-run, the update is idempotent and the provider idempotency key suppresses duplicate sends, so re-runs are safe but wasteful during a mail outage (every retry holds the per-user lock and a DB connection for the 1s mail deadline).\n\n### currentDecision (D3, owner Section 2)\nQuestion: What should the handler do when the mail client raises after the user update has committed?\n\n```\nCommitment                                   | Source/approval or pending | Current (prior handler: unknown) | A                                   | B                        | C\nPayment update committed before email        | approved (:40-42, :70-73)  | yes                              | yes                                 | yes                      | yes\nNamed exceptions rescued                     | pending                    | ?                                | MailTimeout + provider class only   | none                     | StandardError (catch-all)\nHTTP result on mail failure                  | pending                    | ?                                | 200 (payment committed)             | 500 (as written)         | 200\nStructured log with event/user/PI + class    | pending                    | client traces only               | yes, handler-level                  | wrapper's generic log    | generic\nRetry route for the receipt                  | approved (:88-91)          | retry record + runbook           | same                                | same + Stripe retries    | same\nRegression test for this path                | pending (D5 governs suite) | none                             | included with A                     | none                     | none\n```\n\nA) Rescue named mail exceptions after commit, log, return success (recommended). Summary: wrap only the send call; rescue `MailTimeout` and the shared client's provider error class; emit one structured warning (event id, user id, PaymentIntent id, exception class, \"payment committed, receipt queued for retry\"); increment a `payment_receipt_send_failed` counter; let the handler complete so the dedup guard records completion and Stripe gets 200. DB exceptions stay unrescued. Effort: S. Risk: low. Pros: response code matches reality; failed-webhook alert is reserved for real payment failures; no retry amplification during mail outages; the receipt still flows through the existing retry record + runbook. Cons: adds one rescue block to the handler; relies on the mail client's guarantee that the retry record is written before rethrow (:88-89), which must be asserted in a test. Reuse: mail client retry record, dashboard, runbook. Verification: unit test \"mail timeout → user paid, 200, warning logged, counter incremented\"; unit test \"DB error → not rescued, raises\". Completeness 10/10.\nB) Keep rethrow as written. Summary: no rescue; email exception becomes a 500. Effort: S (zero work). Risk: medium. Pros: no new code; Stripe retry may deliver the receipt if the guard re-invokes the handler. Cons: 500 for a committed payment; failed-webhook alert fires on notification problems; behavior hinges on unverified dedup-marker semantics after a post-commit raise; up to 72h of retries during a mail outage. Verification: must read the event guard's completion logic to know which of two behaviors ships. Completeness 5/10.\nC) Catch-all rescue around the email leg. Summary: `rescue StandardError`, log, continue. Effort: S. Risk: medium. Pros: never 500s on email; smallest mental model. Cons: swallows programming errors and unexpected classes silently (violates \"every error has a name\"); hides mail client contract changes. Completeness 3/10.\n\nEngineering preference mapped: \"Every error has a name\" and \"Zero silent failures\" → A names the two classes and keeps DB errors loud.\n"
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