Merge pull request 'feat(webui): dedicated CAMERAS tab group with live MJPEG viewer (Issue #349)' (#352) from sl-webui/issue-349-camera-viewer into main

Move camera viewer from TELEMETRY to new CAMERAS tab group (rose color).
Reorganizes tab structure to separate media capture from system telemetry.
CameraViewer.jsx already provides comprehensive MJPEG stream support:
- Multi-camera switching (7 total: front/left/rear/right CSI, D435i RGB/depth, panoramic)
- FPS counter per camera with quality badge (FULL/GOOD/LOW/NO SIGNAL)
- Resolution and camera info display
- Detection overlays (faces, gestures, scene objects)
- Picture-in-picture support (up to 3 pinned cameras)
- Video recording (MP4/WebM) and snapshot capture
- 360° panoramic viewer with mouse drag pan
- Color-coded quality indicators based on FPS

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

ui/social-bot/src/App.jsx

@@ -112,7 +112,13 @@ const TAB_GROUPS = [
       { id: 'map',     label: 'Map',     },
       { id: 'control', label: 'Control', },
       { id: 'health',  label: 'Health',  },
-      { id: 'cameras', label: 'Cameras', },
+    ],
+  },
+  {
+    label: 'CAMERAS',
+    color: 'text-rose-600',
+    tabs: [
+      { id: 'cameras', label: 'Cameras' },
     ],
   },
   {