feat(video-streaming): add ApiStatusIndicator, PerformanceDashboard, VideoDebugger, and VideoErrorBoundary components

- Implemented ApiStatusIndicator to monitor video API connection status with health check functionality.
- Created PerformanceDashboard for monitoring video streaming performance metrics in development mode.
- Developed VideoDebugger for diagnosing video streaming issues with direct access to test video URLs.
- Added VideoErrorBoundary to handle errors in video streaming components with user-friendly messages and recovery options.
- Introduced utility functions for performance monitoring and thumbnail caching to optimize video streaming operations.
- Added comprehensive tests for video streaming API connectivity and functionality.

src/features/video-streaming/components/VideoCard.tsx

@@ -66,7 +66,7 @@ export const VideoCard: React.FC<VideoCardProps> = ({
         </div>
 
         {/* Streamable Indicator */}
-        {video.is_streamable && (
+        {video.is_streamable ? (
           <div className="absolute bottom-2 left-2">
             <div className="bg-green-500 text-white text-xs px-2 py-1 rounded flex items-center">
               <svg className="w-3 h-3 mr-1" fill="currentColor" viewBox="0 0 20 20">
@@ -75,6 +75,15 @@ export const VideoCard: React.FC<VideoCardProps> = ({
               Streamable
             </div>
           </div>
+        ) : (
+          <div className="absolute bottom-2 left-2">
+            <div className="bg-yellow-500 text-white text-xs px-2 py-1 rounded flex items-center">
+              <svg className="w-3 h-3 mr-1" fill="currentColor" viewBox="0 0 20 20">
+                <path fillRule="evenodd" d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z" clipRule="evenodd" />
+              </svg>
+              Processing
+            </div>
+          </div>
         )}
 
         {/* Conversion Needed Indicator */}