1 Commits

Author	SHA1	Message	Date
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