xiaohei 15a70e4ecf feat: database layer - PostgreSQL schema + memory fallback ...

- drizzle-orm + postgres dependencies
- Full schema: 12 tables covering all modules
- Graceful fallback: no DATABASE_URL → memory mode
- drizzle-kit config for migrations
- Memory store as generic CRUD layer
- dev.ts auto-initializes DB on startup

2026-04-12 19:05:03 +08:00

188 KiB

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