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mercadodevida/specs/F-004-config-flags/TASKS.md
rikrdo 4851692031 feat(F-004): typed fail-fast config and feature flag module 
- loadConfig: pure over env object, accumulates all problems, names var names only
- DATABASE_URL now required at startup; PORT/HOST/LOG_LEVEL/NODE_ENV/REDIS_URL defaulted
- flags module behind FeatureFlagProvider; unknown flags OFF; runtime setEnabled (no redeploy)
- buildApp decorates app.flags; server.ts fail-fast before app boot
- tests caught and fixed flag-store case-normalization bug before gates
- zero new dependencies; all gates approved; verify.sh green
2026-08-14 22:29:18 +02:00

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TASKS — F-004 Typed config and feature flags

  • TASK-001 src/infrastructure/config/config.ts: AppConfig, ConfigError, loadConfig (pure over env object)
  • TASK-002 src/infrastructure/config/tests/config.test.ts: required/optional/invalid cases
  • TASK-003 src/modules/flags/domain/feature-flag-store.ts: FeatureFlagProvider + InMemoryFeatureFlagStore + createFlagStore
  • TASK-004 src/modules/flags/index.ts: public API
  • TASK-005 src/modules/flags/tests/feature-flag-store.test.ts: guard + runtime mutation
  • TASK-006 src/app/build-app.ts: optional flags dep
  • TASK-007 src/infrastructure/http/server.ts: loadConfig, typed listen, ConfigError exit
  • TASK-008 run lint + boundaries + typecheck + build + test + verify.sh