Verified and documented the existing task store implementation:
- All 14 tables from plan §4 implemented in SQLite and Redis backends
- TaskStore trait enables runtime backend switching via task_store.backend
- Schema version tracking with migration detection
- Comprehensive test suite: property tests + integration tests with testcontainers
- Helm values.schema.json enforces replicas > 1 → redis requirement
- Redis memory accounting validated against representative load (20 kQPS)
Added documentation:
- docs/notes/phase3-task-store-verification.md — DoD checklist and Redis memory analysis
- notes/miroir-r3j-phase3-summary.md — Completion summary and retrospective
Definition of Done — ALL MET ✅
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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