Initial commit: 风影 OA 全栈源码（API/Web/Flutter/IM）

含 Phase 1.1 IM seq 排序、断线重连、多端已读同步与微信式语音转文字 UI。
排除 node_modules、构建产物、安装包与 .env 密钥。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/common/middleware/request-id.middleware.ts

@@ -0,0 +1,15 @@
+import { randomUUID } from 'crypto';
+import { Injectable, NestMiddleware } from '@nestjs/common';
+import { NextFunction, Request, Response } from 'express';
+
+export const REQUEST_ID_HEADER = 'x-request-id';
+
+@Injectable()
+export class RequestIdMiddleware implements NestMiddleware {
+  use(req: Request, res: Response, next: NextFunction) {
+    const id = (req.headers[REQUEST_ID_HEADER] as string) || randomUUID();
+    req.headers[REQUEST_ID_HEADER] = id;
+    res.setHeader(REQUEST_ID_HEADER, id);
+    next();
+  }
+}