Rename customs-tablet-frontend to public-frontend and add new features

- Rename customs-tablet-frontend/ to public-frontend/ for broader scope
- Add new pages: customs, inspection with camera integration
- Add new services: apiClient.ts, backendApi.ts, normalizers.ts
- Add CameraFrame component for real-time video streaming
- Add scan_fixer module with clock_publisher and timestamp fix utilities
- Update startup scripts to support new frontend structure
- Update arm_server configuration and service files

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

scripts/README.md

@@ -11,6 +11,9 @@ scripts/
 └── dev_start.sh          ← 本地开发用（前台运行，不启动 ROS2）
 ```
 
+`scan_fixer/` 是生产启动链路的一部分：`clock_publisher.py` 发布 `/clock`，
+`fix_scan_timestamp_v6.py` 将 `/scan` 重发为 `/scan_corrected`，供 Nav2/AMCL 使用。
+
 ## 使用场景
 
 ### 0. 初始化 Python 环境
@@ -69,7 +72,7 @@ ssh elephant@192.168.60.80 'bash -s' < scripts/start_flask.sh
 | `AGV_PROJECT_DIR` | `/home/elephant/work/smart-inspection` | 仓库根目录 |
 | `AGV_APP_DIR` | `$AGV_PROJECT_DIR/agv_app` | Flask 应用目录 |
 | `AGV_ROS2_DIR` | `/home/elephant/agv_pro_ros2` | ROS2 工作空间 |
-| `SCAN_FIXER_DIR` | `/home/elephant/work/scan_fixer` | 时间戳修正工具目录 |
+| `SCAN_FIXER_DIR` | `$AGV_PROJECT_DIR/scan_fixer` | 时间戳修正工具目录 |
 | `FIXER_SCRIPT` | `fix_scan_timestamp_v6.py` | fixer 脚本名 |
 
 ## 日志位置（AGV 上）