gstack/test/fixtures/batching-permission-at.json

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  "screen": " 176 -_Test coverage decision and further sections follow._                                                             \n 176 +### Issue 5 [P1] (confidence: 8/10) PLAN.md:15-18 — no tests for the retry framework                              \n 177 +**Decision: 5A (approved).** Every GAP in the diagram gets a test in this PR,                                     \n 178 +written alongside the code, not after:                                                                            \n 179 +                                                                                                                  \n 180 +| Test file (placeholder names) | Kind | Asserts |                                                                \n 181 +|---|---|---|                                                                                                     \n 182 +| `jobs/retry/backoffStrategy.test` | unit | delay ∈ [0, min(cap, base·2^n)] for n=0..maxAttempts; never > maxDela\n     +yMs; two calls at same attempt differ (jitter); attempt ≥ maxAttempts returns terminal sentinel |                 \n 183 +| `jobs/retry/classify.test` | unit | timeout, ECONNRESET, 5xx, 429 → retryable; 4xx≠429, validation, unknown → te\n     +rminal (table-driven, one row per error type) |                                                                   \n 184 +| `jobs/retry/withRetry.test` | unit | success → no failure row; retryable → ledger row + rethrow; terminal → Unre\n     +coverable and no rethrow-to-retry; ledger write failure → retry still scheduled + error logged |                  \n 185 +| `jobs/retry/policy.test` | unit | defaults match table in Issue 3; per-worker override validated; invalid values\n     + rejected |                                                                                                       \n 186 +| `workers/<each>.test` (x5) | unit | handler invoked through withRetry with the expected policy |                \n 187 +| `webhooks/ledger.test` | unit | one row per attempt, attempt strictly increasing; concurrent duplicate for same \n     +event id → single delivery |                                                                                      \n 188 +| `processWebhookJob.regression.test` | E2E | **CRITICAL** 2xx-then-timeout → no duplicate distinct event, same ev\n     +ent id, one `delivered` row; 4xx → one attempt |                                                                  \n 189 +| `webhooks/delivery.e2e.test` | E2E | transient 5xx then 2xx → one event id, delivered; 4xx → rejected, no retry;\n     + 429 → retried |                                                                                                  \n 190 +| `jobs/retry/dlq.e2e.test` | E2E | exhaustion → DLQ + exactly one alert; maxAge exceeded → DLQ; replay → new chai\n     +n, same event id |                                                                                                \n 191 +                                                                                                                  \n 192 +E2E tests run against the real job library and a fake HTTP receiver; no                                           \n 193 +mocking of the retry hook.                                                                                        \n 194 +                                                                                                                  \n 195 +## 4. Performance                                                                                                 \n 196 +                                                                                                                  \n 197 +_Decision follows._                                                                                               \n╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌\n Do you want to make this edit to gstack-test-plan-eng-batching.md?\n ❯ 1. Yes\n   2. Yes, and switch to accept edits (auto-approve file edits and common file commands) for this session; Yes, and\n      always allow access to /tmp/gstack-paid-shard-dY0BU1/tmp/gstack-e2e-plan-eng-batching-PfFS0a for this session\n      (shift+tab)\n   3. No\n\n Esc to cancel · Tab to amend",
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        "old_string": "## 2. Code Quality (decisions)\n\n_Further sections follow as they are agreed._",
        "new_string": "## 2. Code Quality (decisions)\n\n### Issue 4 [P1] (confidence: 9/10) PLAN.md:11-13 — retry envelope duplicated across 5 workers\n**Decision: 4A (approved).** Extract one `withRetry(policy, handler)` wrapper\nin a shared module (e.g. `jobs/retry/withRetry`) before touching any worker,\nthen convert all 5 workers to thin call sites in this PR. The wrapper owns:\nerror classification (retryable vs terminal), attempt logging, ledger write\n(decision 2A), and hand-off to the library retry hook (decision 1A). Workers\nown only their handler body. Order: wrapper + tests first, then workers one\ncommit each (structural change, then behavioral change; never both at once).\n\n```\n  worker file (x5)                shared module (x1)\n  ┌────────────────────┐         ┌──────────────────────────────────┐\n  │ export default     │         │ withRetry(policy, handler)       │\n  │   withRetry(       │ ──────► │   try handler(job)               │\n  │     policy,        │         │   catch e:                       │\n  │     handleXJob)    │         │     classify(e) → terminal|retry │\n  └────────────────────┘         │     ledger.record(job, attempt)  │\n                                 │     terminal → throw Unrecoverable│\n                                 │     retry    → rethrow (library) │\n                                 └──────────────────────────────────┘\n                                 backoffStrategy(attempt) → delayMs (1A/3A)\n```\n\n## 3. Tests\n\nTest framework: none detectable in this repo (only PLAN.md and CLAUDE.md are\nchecked in). Coverage diagram produced; concrete test file names use the\n`*.test.ts` convention as a placeholder and must match the real repo.\n\n### REGRESSION (mandatory, CRITICAL, no approval needed)\n`processWebhookJob()` is rewritten (PLAN.md:16-17). Its prior at-most-once\nbehavior is existing behavior with no planned test. Per the regression rule\nthis test is added as a critical requirement:\n\n- **`processWebhookJob.regression.test`** — given a receiver that returns 2xx\n  then the connection drops before the response is read (or the worker crashes\n  after a 2xx), assert the receiver observes exactly one delivery with the\n  same `X-Webhook-Event-Id` on any second attempt, and the ledger shows one\n  `delivered` row. Also assert that a 4xx (≠429) response produces exactly one\n  attempt and no retry. This pins the new contract: at-least-once with a\n  stable dedupe key, never a second *distinct* event.\n\n### Coverage diagram\n\n```\nCODE PATHS                                              USER / OPERATOR FLOWS\n[+] jobs/retry/backoffStrategy                          [+] Webhook receiver\n  ├── [GAP] attempt 0..n → delay within [0, cap]          ├── [GAP] [→E2E] transient 5xx then 2xx: one event id, delivered\n  ├── [GAP] delay never exceeds maxDelayMs                ├── [GAP] [→E2E] 4xx: single attempt, marked rejected\n  ├── [GAP] jitter: two calls same attempt differ         └── [CRITICAL] [→E2E] 2xx then timeout: no duplicate event (regression)\n  └── [GAP] attempt ≥ maxAttempts → -1 / terminal\n[+] jobs/retry/withRetry                                [+] Operator\n  ├── [GAP] handler succeeds → no ledger failure row       ├── [GAP] job exhausts → lands in DLQ, alert fires once\n  ├── [GAP] retryable error → ledger row + rethrow         ├── [GAP] job older than maxAge → stops retrying, DLQ\n  ├── [GAP] terminal error → Unrecoverable, no retry       └── [GAP] replay from DLQ → new attempt chain, same event id\n  ├── [GAP] classify(): timeout / conn reset / 5xx / 429\n  ├── [GAP] classify(): 4xx ≠ 429 / validation / unknown\n  └── [GAP] ledger write fails → retry still scheduled, error logged\n[+] jobs/retry/policy\n  └── [GAP] defaults + per-worker override validation\n[+] workers/* (x5)\n  └── [GAP] each worker: handler invoked via withRetry with expected policy\n[+] webhook ledger\n  ├── [GAP] one row per attempt, monotonically increasing attempt\n  └── [GAP] concurrent duplicate job for same event id → single delivery\n\nCOVERAGE: 0/20 paths tested (0%)  |  Code paths: 0/14  |  Flows: 0/6\nQUALITY: none yet  |  GAPS: 20 (3 E2E, 1 CRITICAL regression, 0 eval)\n```\n\nLegend: ★★★ behavior + edge + error | ★★ happy path | ★ smoke | [→E2E] integration test\n\n_Test coverage decision and further sections follow._"
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