gbanyan c71c1c3a62 docs(01-02): complete backend API plan ...

- Created 01-02-SUMMARY.md with execution details
- Updated STATE.md: Phase 1 complete (2/2 plans)
- Performance metrics: 2 plans, 5 min total, 2.5 min avg
- All success criteria met, no deviations

2026-02-13 12:12:53 +08:00

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01-database-schema-backend-api

docs(01-02): complete backend API plan

2026-02-13 12:12:53 +08:00