feat: 迁移数据库至 SQLite 并新增项目文档

- 将 Postgres 数据库替换为 SQLite
- 并同步添加 README 文档以优化项目初始化流程

package.json

@@ -8,6 +8,7 @@
     "build:tauri": "tauri build",
     "build:vite": "vite build",
     "db:generate": "drizzle-kit generate",
+    "db:init": "bun run scripts/init-db.ts",
     "db:migrate": "drizzle-kit migrate",
     "db:push": "drizzle-kit push",
     "db:studio": "drizzle-kit studio",
@@ -31,15 +32,12 @@
     "@tauri-apps/api": "^2.9.1",
     "drizzle-orm": "^0.45.1",
     "drizzle-zod": "^0.8.3",
-    "postgres": "^3.4.8",
     "react": "^19.2.3",
     "react-dom": "^19.2.3",
     "zod": "^4.3.5"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.3.11",
-    "@effect/platform": "^0.94.1",
-    "@effect/schema": "^0.75.5",
     "@tailwindcss/vite": "^4.1.18",
     "@tanstack/devtools-vite": "^0.4.1",
     "@tanstack/react-devtools": "^0.9.2",