gstack/test/fixtures/eng-legacy-contract-am.json

{
  "observationSha256": "1fbba18c11a5b46ef64cb72e39f8b74f3b9b7953274fe58eed2a93f0dd594135",
  "reportSha256": "370461dbf4820f9811843682539845b8043cb8d72b610868473241a02577283c",
  "calls": [
    {
      "sessionId": "26447393-d025-40f1-a80a-e6a34fcddf1a",
      "toolUseId": "toolu_01NjPQmJ7CTTEgsvqYRCT3Bs",
      "questions": [
        {
          "question": "D1 \u2014 Reduce the class inventory before building?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor plan review, Step 0 scope challenge.\nELI10: The plan adds five new classes (AuthBroker, SessionMint, AuthCache, TokenStore, RequestPolicy), and three of them are ways of holding the same cached tokens the existing adapter already holds. Every extra class is a place for bugs to hide and a thing the next engineer must learn. The question is whether the two real services can use the existing cache adapter directly through a narrow interface.\nStakes if we pick wrong: over-reduce and you re-add a class mid-build; under-reduce and you maintain three caches and 12 files for a change whose goal is not yet written down.\nRecommendation: A because the AuthCache facade adds no rule or serialization (PLAN.md:11-13) and TokenStore has no stated responsibility.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: a possible re-add later versus three overlapping abstractions now.",
          "header": "D1 scope",
          "multiSelect": false,
          "options": [
            {
              "label": "A) Reduce to 2-3 classes (recommended)",
              "description": "\u2705 Same service-facing boundary with zero new runtime code to test or debug (human: saves ~2 days / CC: saves ~20min). \u2705 Removes the double/triple-caching memory and consistency question entirely. \u274c If TokenStore had a real hidden purpose it returns later as an unplanned change."
            },
            {
              "label": "B) Proceed with 5 classes",
              "description": "\u2705 No re-planning; keeps whatever design intent the author had for TokenStore and RequestPolicy. \u2705 Forces a one-sentence responsibility per class into the plan, useful either way. \u274c 12 files and three cache-shaped types before the goal of the refactor is stated."
            },
            {
              "label": "C) Hold \u2014 state the goal first",
              "description": "\u2705 The plan has no problem statement; writing it may settle D1 on its own. \u2705 Cheapest possible step before any code (human: ~30min / CC: ~5min). \u274c Delays every other decision until the goal is written."
            }
          ]
        }
      ],
      "answered": true,
      "failed": false,
      "answers": {
        "D1 \u2014 Reduce the class inventory before building?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor plan review, Step 0 scope challenge.\nELI10: The plan adds five new classes (AuthBroker, SessionMint, AuthCache, TokenStore, RequestPolicy), and three of them are ways of holding the same cached tokens the existing adapter already holds. Every extra class is a place for bugs to hide and a thing the next engineer must learn. The question is whether the two real services can use the existing cache adapter directly through a narrow interface.\nStakes if we pick wrong: over-reduce and you re-add a class mid-build; under-reduce and you maintain three caches and 12 files for a change whose goal is not yet written down.\nRecommendation: A because the AuthCache facade adds no rule or serialization (PLAN.md:11-13) and TokenStore has no stated responsibility.\nNote: options differ in kind, not coverage \u2014 no completeness score.\nNet: a possible re-add later versus three overlapping abstractions now.": "A) Reduce to 2-3 classes (recommended)"
      },
      "unansweredQuestionIndices": [],
      "answeredAt": "2026-09-10T09:44:08.579Z"
    },
    {
      "sessionId": "26447393-d025-40f1-a80a-e6a34fcddf1a",
      "toolUseId": "toolu_01Qs552AuhXqYDwihpYWqTaG",
      "questions": [
        {
          "question": "D2 \u2014 Module-level AuthCache singleton \u2192 constructor injection with a single writer?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor, Architecture finding A1 (PLAN.md:19-20: \"share a global mutable AuthCache instance via module-level export. Both services mutate it\").\nELI10: Right now both services grab the same global cache object from a module import and both write to it. Nobody can tell who owns a write, and tests share state through that global. Building the cache once at app startup and handing it to each service makes the dependency visible and gives every test its own instance. With D1 answered, the injected thing is the existing adapter behind a narrow interface.\nStakes if we pick wrong: flaky or order-dependent tests, and a production bundle with two \"singletons\" where an invalidation clears the wrong one.\nRecommendation: A because it is the standard Layer 1 fix (composition root + DI) and costs minutes with CC; it maps to your explicit-over-clever preference.\nCompleteness: A=9/10, B=6/10, C=2/10\nNet: explicit dependencies now versus hidden coupling you debug later.",
          "header": "D2 DI",
          "multiSelect": false,
          "options": [
            {
              "label": "A) Composition-root injection, single writer (recommended)",
              "description": "\u2705 Test files construct their own fake cache; no cross-file state, parallel workers safe (human: ~1 day / CC: ~15min). \u2705 SessionMint is the only session writer and AuthBroker gets a read-only port, enforced by types not convention. \u274c Touches the bootstrap file and both service constructors."
            },
            {
              "label": "B) Keep module export, add serializing proxy",
              "description": "\u2705 Smaller diff; interleaved writes on one key get serialized (human: ~0.5 day / CC: ~10min). \u2705 No bootstrap changes. \u274c Still a hidden global; test isolation and duplicate-bundle problems remain."
            },
            {
              "label": "C) Do nothing",
              "description": "\u2705 Zero effort. \u2705 Matches the plan as written. \u274c Both A1 failure scenarios stay live and the plan's own test coverage cannot isolate state."
            }
          ]
        }
      ],
      "answered": true,
      "failed": false,
      "answers": {
        "D2 \u2014 Module-level AuthCache singleton \u2192 constructor injection with a single writer?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor, Architecture finding A1 (PLAN.md:19-20: \"share a global mutable AuthCache instance via module-level export. Both services mutate it\").\nELI10: Right now both services grab the same global cache object from a module import and both write to it. Nobody can tell who owns a write, and tests share state through that global. Building the cache once at app startup and handing it to each service makes the dependency visible and gives every test its own instance. With D1 answered, the injected thing is the existing adapter behind a narrow interface.\nStakes if we pick wrong: flaky or order-dependent tests, and a production bundle with two \"singletons\" where an invalidation clears the wrong one.\nRecommendation: A because it is the standard Layer 1 fix (composition root + DI) and costs minutes with CC; it maps to your explicit-over-clever preference.\nCompleteness: A=9/10, B=6/10, C=2/10\nNet: explicit dependencies now versus hidden coupling you debug later.": "A) Composition-root injection, single writer (recommended)"
      },
      "unansweredQuestionIndices": [],
      "answeredAt": "2026-09-10T09:44:39.717Z"
    },
    {
      "sessionId": "26447393-d025-40f1-a80a-e6a34fcddf1a",
      "toolUseId": "toolu_01BohFzt1fQdwGkAf2KTWQfm",
      "questions": [
        {
          "question": "D5 \u2014 Split validateAndDispatch() and stop swallowing errors?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor, Code quality finding C1 (PLAN.md:23-24: \"60 lines with three nested try/catch blocks; each catch swallows a different error class\").\nELI10: The function catches three kinds of errors and quietly keeps going. In an auth path, a swallowed error is an authorization decision made by accident: an IDP 503 can fall through to dispatch with partial claims. Splitting validation from dispatch and returning typed errors makes every outcome named, logged, and testable.\nStakes if we pick wrong: requests proceed on partial claims, or fail with no log line. This is the second critical gap.\nRecommendation: A because explicit over clever is your stated preference and each branch gets its own test; B logs a bug you keep.\nCompleteness: A=9/10, B=5/10, C=1/10\nNet: a real refactor with tests versus logging a bug you keep.",
          "header": "D5 errors",
          "multiSelect": false,
          "options": [
            {
              "label": "A) Split + typed AuthError taxonomy + rethrow unknown (recommended)",
              "description": "\u2705 Every error path becomes a named, tested outcome (IdpUnavailable, TokenInvalid, PolicyDenied, Unknown) (human: ~1 day / CC: ~20min). \u2705 60 lines with 3 nested try/catch become two ~20-line functions with one boundary try. \u274c Callers that relied on silent continuation will surface; that is the point, but it is work."
            },
            {
              "label": "B) Keep structure, add a log line per catch",
              "description": "\u2705 Trivial diff (human: ~1h / CC: ~3min). \u2705 Failures become visible in logs. \u274c Behavior is still wrong and still untestable per branch."
            },
            {
              "label": "C) Leave as-is",
              "description": "\u2705 Zero effort. \u2705 No behavior change for existing callers. \u274c Critical gap stays open: silent allow on IDP failure."
            }
          ]
        }
      ],
      "answered": true,
      "failed": false,
      "answers": {
        "D5 \u2014 Split validateAndDispatch() and stop swallowing errors?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor, Code quality finding C1 (PLAN.md:23-24: \"60 lines with three nested try/catch blocks; each catch swallows a different error class\").\nELI10: The function catches three kinds of errors and quietly keeps going. In an auth path, a swallowed error is an authorization decision made by accident: an IDP 503 can fall through to dispatch with partial claims. Splitting validation from dispatch and returning typed errors makes every outcome named, logged, and testable.\nStakes if we pick wrong: requests proceed on partial claims, or fail with no log line. This is the second critical gap.\nRecommendation: A because explicit over clever is your stated preference and each branch gets its own test; B logs a bug you keep.\nCompleteness: A=9/10, B=5/10, C=1/10\nNet: a real refactor with tests versus logging a bug you keep.": "A) Split + typed AuthError taxonomy + rethrow unknown (recommended)"
      },
      "unansweredQuestionIndices": [],
      "answeredAt": "2026-09-10T09:45:43.007Z"
    },
    {
      "sessionId": "26447393-d025-40f1-a80a-e6a34fcddf1a",
      "toolUseId": "toolu_016459fhN82mqXuCRYoktSvN",
      "questions": [
        {
          "question": "D9 \u2014 Parallelize IDP calls with per-call timeouts, shared abort, and JWKS/discovery caching?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor, Performance finding P1 (PLAN.md:31-32: \"5 sequential API calls to the IDP; they could be parallelized via Promise.all trivially\").\nELI10: Running the five calls at once is faster, but Promise.all on its own still hangs the whole validation if one call hangs, and a failure leaves the other four in flight burning IDP quota. Two of the five (discovery document, JWKS) almost never change and should be cached, so the real win is making fewer calls, not just faster ones.\nStakes if we pick wrong: validation hangs on one slow IDP call, or a cold cache after deploy hits IDP rate limits with 5\u00d7 the calls.\nRecommendation: A because \"trivially Promise.all\" is the incomplete version; timeouts and caching are minutes with CC and remove two failure modes.\nCompleteness: A=9/10, B=6/10, C=2/10\nNet: a cache with one edge case (kid miss) versus unbounded latency and IDP quota burn.",
          "header": "D9 perf",
          "multiSelect": false,
          "options": [
            {
              "label": "A) Promise.all + per-call timeout + shared abort + JWKS/discovery cache (recommended)",
              "description": "\u2705 Cold validation drops from 5 calls to 2-3; warm cache hit is 0 IDP calls (human: ~1 day / CC: ~15min). \u2705 Worst-case latency is bounded; a failure aborts siblings instead of leaking them. \u274c JWKS cache needs kid-miss refresh logic and its own test (R5 covers it)."
            },
            {
              "label": "B) Promise.all only, as the plan says",
              "description": "\u2705 Immediate latency win with a minimal diff (human: ~1h / CC: ~3min). \u2705 No new cache to reason about. \u274c One hung call still hangs validation; 5\u00d7 IDP load on every cold validation."
            },
            {
              "label": "C) Keep sequential",
              "description": "\u2705 No change; lowest IDP concurrency. \u2705 Simplest failure semantics. \u274c 5\u00d7 serial latency on every cold validation."
            }
          ]
        }
      ],
      "answered": true,
      "failed": false,
      "answers": {
        "D9 \u2014 Parallelize IDP calls with per-call timeouts, shared abort, and JWKS/discovery caching?\nProject/branch/task: main \u2014 Multi-tenant Auth Refactor, Performance finding P1 (PLAN.md:31-32: \"5 sequential API calls to the IDP; they could be parallelized via Promise.all trivially\").\nELI10: Running the five calls at once is faster, but Promise.all on its own still hangs the whole validation if one call hangs, and a failure leaves the other four in flight burning IDP quota. Two of the five (discovery document, JWKS) almost never change and should be cached, so the real win is making fewer calls, not just faster ones.\nStakes if we pick wrong: validation hangs on one slow IDP call, or a cold cache after deploy hits IDP rate limits with 5\u00d7 the calls.\nRecommendation: A because \"trivially Promise.all\" is the incomplete version; timeouts and caching are minutes with CC and remove two failure modes.\nCompleteness: A=9/10, B=6/10, C=2/10\nNet: a cache with one edge case (kid miss) versus unbounded latency and IDP quota burn.": "A) Promise.all + per-call timeout + shared abort + JWKS/discovery cache (recommended)"
      },
      "unansweredQuestionIndices": [],
      "answeredAt": "2026-09-10T09:47:14.009Z"
    }
  ],
  "declaration": "### REGRESSION (mandatory, authorized by the coverage-audit regression rule \u2014 no question asked)\n\n`legacyAuthFlow()` is existing behavior being rewritten (PLAN.md:27-28) with the plan\nexplicitly disclaiming compatibility coverage (PLAN.md:14-16). This is a regression by\ndefinition. **CRITICAL requirement added to the plan:**\n\n- `auth/legacyAuthFlow.characterization.test.ts` \u2014 record current outputs for: valid\n  token, expired token, revoked token, wrong audience, wrong issuer, suspended tenant,\n  missing tenant header, IDP 5xx, IDP timeout, malformed JWT. Assert the new path\n  (behind the flag) produces identical decisions and equivalent error surfaces. These\n  tests are written BEFORE any rewrite (T1) and stay green through cut-over.\n\n",
  "tasks": "## Implementation Tasks\nSynthesized from this review's findings. Each task derives from a specific\nfinding above. Run with Claude Code or Codex; checkbox as you ship.\n\n- [ ] **T1 (P1, human: ~1 day / CC: ~20min)** \u2014 auth/ \u2014 Write characterization tests for `legacyAuthFlow()` before any rewrite\n  - Surfaced by: Test review \u2014 REGRESSION rule; PLAN.md:27-28 \"no regression test for the prior behavior is planned\"\n  - Files: `auth/legacyAuthFlow.characterization.test.ts`\n  - Verify: suite green on current main; re-run after each later task\n",
  "review": "## GSTACK REVIEW REPORT\n\n| Review | Trigger | Why | Runs | Status | Findings |\n|--------|---------|-----|------|--------|----------|\n| CEO Review | `/plan-ceo-review` | Scope & strategy | 0 | \u2014 | \u2014 |\n",
  "compact": "### REGRESSION (mandatory, authorized by the coverage-audit regression rule \u2014 no question asked)\n\n`legacyAuthFlow()` is existing behavior being rewritten (PLAN.md:27-28) with the plan\nexplicitly disclaiming compatibility coverage (PLAN.md:14-16). This is a regression by\ndefinition. **CRITICAL requirement added to the plan:**\n\n- `auth/legacyAuthFlow.characterization.test.ts` \u2014 record current outputs for: valid\n  token, expired token, revoked token, wrong audience, wrong issuer, suspended tenant,\n  missing tenant header, IDP 5xx, IDP timeout, malformed JWT. Assert the new path\n  (behind the flag) produces identical decisions and equivalent error surfaces. These\n  tests are written BEFORE any rewrite (T1) and stay green through cut-over.\n\n\n## Implementation Tasks\nSynthesized from this review's findings. Each task derives from a specific\nfinding above. Run with Claude Code or Codex; checkbox as you ship.\n\n- [ ] **T1 (P1, human: ~1 day / CC: ~20min)** \u2014 auth/ \u2014 Write characterization tests for `legacyAuthFlow()` before any rewrite\n  - Surfaced by: Test review \u2014 REGRESSION rule; PLAN.md:27-28 \"no regression test for the prior behavior is planned\"\n  - Files: `auth/legacyAuthFlow.characterization.test.ts`\n  - Verify: suite green on current main; re-run after each later task\n\n## GSTACK REVIEW REPORT\n\n| Review | Trigger | Why | Runs | Status | Findings |\n|--------|---------|-----|------|--------|----------|\n| CEO Review | `/plan-ceo-review` | Scope & strategy | 0 | \u2014 | \u2014 |\n"
}