Files
tiennm99 e2e3112eb5 feat(db): finalize MongoDB Atlas migration documentation
Phase 08: Complete documentation pass for MongoDB Atlas migration.

- Create docs/cost-tracking.md: Cost monitoring, upgrade triggers, monthly checklist
- Create docs/project-changelog.md: Full migration summary with phase breakdown
- Update docs/architecture.md section 8: Describe dual-write era, MongoDB store layers
- Update docs/code-standards.md: Add Persistence section for storage factory patterns
- Update docs/codebase-summary.md: Reflect MongoDB as primary, update test count (733)
- Update README.md: Storage section now describes MongoDB + dual-write during migration
- Update CLAUDE.md: Architecture section references MongoDB instead of KV/D1
- Update tests/fakes/fake-mongo.js: Document frozen surface (Phase 02-08 API)

Verified:
- All 733 tests passing
- Lint + secret-leak check pass
- npm run register:dry succeeds
- Auto-pause concern satisfied: trading (17:00), lolschedule (01:00), drift-verifier (hourly) all write to Mongo
- Roadmap verified migration NOT listed (future-only per user feedback)

Post-Phase-07 cutover: dual-write collapses, KV/D1 deleted, MongoDB becomes sole backend.
2026-04-26 09:34:25 +07:00
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