feat(auth): 添加认证模块和图片批注功能（项目初始化）

- 实现用户登录、登出、密码修改等认证功能
- 添加会话管理和权限控制中间件
- 创建图片批注组件和相关API路由
- 实现批注的增删改查功能
- 添加Docker和Git忽略配置文件
- 创建系统架构文档和开发约定说明
- 集成认证模块到前端应用路由中

api/server.ts

@@ -0,0 +1,37 @@
+/**
+ * local server entry file, for local development
+ */
+import app from './app.js';
+import { closeDatabase } from './database.js';
+
+/**
+ * start server with port
+ */
+const PORT = process.env.PORT || 3001;
+
+const server = app.listen(PORT, () => {
+  console.log(`Server ready on port ${PORT}`);
+});
+
+/**
+ * close server
+ */
+process.on('SIGTERM', () => {
+  console.log('SIGTERM signal received');
+  server.close(async () => {
+    await closeDatabase();
+    console.log('Server closed');
+    process.exit(0);
+  });
+});
+
+process.on('SIGINT', () => {
+  console.log('SIGINT signal received');
+  server.close(async () => {
+    await closeDatabase();
+    console.log('Server closed');
+    process.exit(0);
+  });
+});
+
+export default app;