feat: 实现多端飞书登录功能

1. 飞书客户端内：静默自动登录
   - 检测飞书环境 (userAgent + ttjsBridge)
   - 调用 ttjsBridge.getAuthCode() 获取授权码
   - 自动登录到后台

2. 飞书客户端外：扫码登录
   - 后端新增三个接口：
     * POST /api/v1/auth/qrcode-login - 生成登录会话和二维码
     * GET /api/v1/auth/qrcode-login/status - 轮询登录状态
     * GET /login/qrcode/{id} - 飞书授权回调
   - 前端新增 QRCodeLogin 组件：
     * 使用 qrcode.react 生成二维码
     * 每 2 秒轮询登录状态
     * 状态：loading → pending → scanning → success/expired

3. 数据库表：feishu_login_session
   - 存储 session_id, auth_url, status, user_id
   - 状态：pending, scanning, success, expired
   - 2 分钟过期机制

4. 其他优化
   - 移除审批详情页的 header
   - 更新 PROJECT_ISSUES.md 文档

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package-lock.json

@@ -6,10 +6,12 @@
     "": {
       "dependencies": {
         "@tanstack/react-query": "^5.90.21",
+        "@types/qrcode.react": "^1.0.5",
         "antd-mobile": "^5.42.3",
         "axios": "^1.13.5",
         "dayjs": "^1.11.19",
         "postcss-pxtorem": "^6.1.0",
+        "qrcode.react": "^4.2.0",
         "react-router-dom": "^7.13.1",
         "vconsole": "^3.15.1",
         "zustand": "^5.0.11"
@@ -166,6 +168,24 @@
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       "license": "MIT"
     },
+    "node_modules/@types/qrcode.react": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/@types/qrcode.react/-/qrcode.react-1.0.5.tgz",
+      "integrity": "sha512-BghPtnlwvrvq8QkGa1H25YnN+5OIgCKFuQruncGWLGJYOzeSKiix/4+B9BtfKF2wf5ja8yfyWYA3OXju995G8w==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/react": "*"
+      }
+    },
+    "node_modules/@types/react": {
+      "version": "19.2.14",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.14.tgz",
+      "integrity": "sha512-ilcTH/UniCkMdtexkoCN0bI7pMcJDvmQFPvuPvmEaYA/NSfFTAgdUSLAoVjaRJm7+6PvcM+q1zYOwS4wTYMF9w==",
+      "license": "MIT",
+      "dependencies": {
+        "csstype": "^3.2.2"
+      }
+    },
     "node_modules/@use-gesture/core": {
       "version": "10.3.0",
       "resolved": "https://registry.npmjs.org/@use-gesture/core/-/core-10.3.0.tgz",
@@ -340,6 +360,12 @@
         "url": "https://opencollective.com/core-js"
       }
     },
+    "node_modules/csstype": {
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
+      "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
+      "license": "MIT"
+    },
     "node_modules/dayjs": {
       "version": "1.11.19",
       "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.11.19.tgz",
@@ -709,6 +735,15 @@
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       "license": "MIT"
     },
+    "node_modules/qrcode.react": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/qrcode.react/-/qrcode.react-4.2.0.tgz",
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+      "license": "ISC",
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
     "node_modules/rc-field-form": {
       "version": "1.44.0",
       "resolved": "https://registry.npmjs.org/rc-field-form/-/rc-field-form-1.44.0.tgz",