fix: add stream diagnostics and project-ID fallback for video playback

- Stream endpoint now accepts both content ID and project ID,
  falling back to project lookup when content ID is not found
- Added /contents/:id/stream-debug diagnostic endpoint that checks
  file existence in both private and public MinIO buckets
- Stream endpoint now verifies raw file exists before generating
  presigned URL, returning a clear error if file is missing
- Added comprehensive logging throughout the stream pipeline
- VideoPlayer now logs stream URL, API responses, and playback errors
  to browser console for easier debugging
- Bumped CACHEBUST for frontend (19), API (11), and ffmpeg-worker (13)

Co-authored-by: Cursor <cursoragent@cursor.com>

docker-compose.yml

@@ -20,7 +20,7 @@ services:
       context: .
       dockerfile: Dockerfile
       args:
-        CACHEBUST: "18"
+        CACHEBUST: "19"
         VITE_USE_MOCK_DATA: "false"
         VITE_CONTENT_ORIGIN: ${FRONTEND_URL}
         VITE_INDEEHUB_API_URL: /api
@@ -47,7 +47,7 @@ services:
       context: ./backend
       dockerfile: Dockerfile
       args:
-        CACHEBUST: "10"
+        CACHEBUST: "11"
     restart: unless-stopped
     environment:
       # ── Core ─────────────────────────────────────────────
@@ -179,7 +179,7 @@ services:
       context: ./backend
       dockerfile: Dockerfile.ffmpeg
       args:
-        CACHEBUST: "12"
+        CACHEBUST: "13"
     restart: unless-stopped
     environment:
       ENVIRONMENT: production