refactor: 清理未使用依赖并更新配置示例

- 添加数据库连接配置示例以支持本地PostgreSQL环境
- 移除项目中不再使用的 dayjs 依赖及其相关锁定信息
- 移除未使用的 dayjs 依赖项

.env.example

@@ -0,0 +1 @@
+DATABASE_URL=postgres://postgres:postgres@localhost:5432/postgres

bun.lock

@@ -11,7 +11,6 @@
         "@tanstack/react-router-devtools": "^1.150.0",
         "@tanstack/react-router-ssr-query": "^1.150.0",
         "@tanstack/react-start": "^1.150.0",
-        "dayjs": "^1.11.19",
         "drizzle-orm": "^1.0.0-beta.9-e89174b",
         "drizzle-zod": "^1.0.0-beta.9-e89174b",
         "postgres": "^3.4.8",
@@ -581,8 +580,6 @@
 
     "csstype": ["csstype@3.2.3", "", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
 
-    "dayjs": ["dayjs@1.11.19", "", {}, "sha512-t5EcLVS6QPBNqM2z8fakk/NKel+Xzshgt8FFKAn+qwlD1pzZWxh0nVCrvFK7ZDb6XucZeF9z8C7CBWTRIVApAw=="],
-
     "db0": ["db0@0.3.4", "", { "peerDependencies": { "@electric-sql/pglite": "*", "@libsql/client": "*", "better-sqlite3": "*", "drizzle-orm": "*", "mysql2": "*", "sqlite3": "*" }, "optionalPeers": ["@electric-sql/pglite", "@libsql/client", "better-sqlite3", "drizzle-orm", "mysql2", "sqlite3"] }, "sha512-RiXXi4WaNzPTHEOu8UPQKMooIbqOEyqA1t7Z6MsdxSCeb8iUC9ko3LcmsLmeUt2SM5bctfArZKkRQggKZz7JNw=="],
 
     "debug": ["debug@4.4.3", "", { "dependencies": { "ms": "^2.1.3" } }, "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA=="],

package.json

@@ -17,7 +17,6 @@
     "@tanstack/react-router-devtools": "^1.150.0",
     "@tanstack/react-router-ssr-query": "^1.150.0",
     "@tanstack/react-start": "^1.150.0",
-    "dayjs": "^1.11.19",
     "drizzle-orm": "^1.0.0-beta.9-e89174b",
     "drizzle-zod": "^1.0.0-beta.9-e89174b",
     "postgres": "^3.4.8",