{
  "feature_id": "F-004",
  "agent": "leader",
  "verdict": "APPROVED",
  "summary": "F-004 closed. Typed fail-fast config and a boundary-clean feature flag module behind an interface. Deployment ≠ activation proven at runtime. All gates APPROVED, verify.sh exit 0, zero new dependencies.",
  "gates": {
    "reviewer": "APPROVED (reviewer.json)",
    "security": "APPROVED (security.json)",
    "qa": "APPROVED (qa.json)",
    "verify_sh": "exit 0"
  },
  "deliverables": [
    "src/infrastructure/config/config.ts (pure loader, accumulated problems, name-only errors)",
    "src/modules/flags (FeatureFlagProvider + InMemoryFeatureFlagStore, fail-safe OFF default)",
    "buildApp flags dep decorated as app.flags; server.ts fail-fast startup",
    "15 new tests incl. runtime flip without redeploy and secret non-leakage",
    "README Configuration section + .env.example FLAG_* example"
  ],
  "process_notes": [
    "Tests caught a real bug during build (flag store case normalization); fixed before gates with regression test retained. Exactly the loop we want."
  ],
  "next_feature_hint": "F-005 identity now has all dependencies done (F-002, F-003) plus config/flags ready -> recommended next",
  "evidence": [
    "work/artifacts/F-004/architect.md",
    "work/artifacts/F-004/implementer.md",
    "work/artifacts/F-004/reviewer.json",
    "work/artifacts/F-004/security.json",
    "work/artifacts/F-004/qa.json",
    "work/artifacts/F-004/documenter.md",
    "./scripts/verify.sh exit 0 at close"
  ],
  "timestamp": "2026-08-14T20:30:00Z"
}