feat(video): 可配置 RTSP 打开超时并提高默认时长

- Settings 增加 video_open_timeout_sec（VIDEO_OPEN_TIMEOUT_SEC），默认 45s
- SessionManager 全部就绪等待为该值 + 5s；StreamWorker 传入单路超时
- baked pipeline 回退默认值与配置对齐；.env.example 补充说明
- or_site_config.sample.json 扩展穿透摄像头与术间绑定示例
- 同步 uv.lock

app/resources/or_site_config.sample.json

@@ -1,9 +1,6 @@
 {
   "video_rtsp_urls": {
-    "or-cam-01": "rtsp://admin:Aa183137@192.168.3.2:554/Streaming/Channels/101",
-    "or-cam-02": "rtsp://admin:Aa183137@192.168.3.3:554/Streaming/Channels/101",
-    "or-cam-03": "rtsp://admin:Aa183137@192.168.3.4:554/Streaming/Channels/101",
-    "or-cam-04": "rtsp://admin:Aa183137@192.168.3.5:554/Streaming/Channels/101"
+    "or-cam-01": "rtsp://127.0.0.1:18554/demo1"
   },
   "voice_or_room_bindings": [
     {
@@ -13,6 +10,16 @@
         "or-cam-03",
         "or-cam-04"
       ],
+      "or_room_id": "OR-ROOM1",
+      "voice_terminal_id": "desktop-2"
+    },
+    {
+      "camera_ids": [
+        "or-cam-101",
+        "or-cam-102",
+        "or-cam-103",
+        "or-cam-104"
+      ],
       "or_room_id": "OR-TEST",
       "voice_terminal_id": "desktop-1"
     }