feat(player): add ASR/YOLO overlays, zoom, and text rendering

- Add TTF text rendering for subtitles and YOLO labels
- Implement ASR subtitle display with background
- Add YOLO bbox rendering with class labels
- Add zoom in/out (+/-) and reset (Backquote)
- Add frame/time info display
- Fix YOLO metadata parsing for actual file format
- Add Shift+Arrow for 1-second seek

Cargo.toml

@@ -20,7 +20,7 @@ tao = "0.30"
 wry = "0.54"
 
 # Video/Audio
-sdl2 = "0.38"
+sdl2 = { version = "0.38", features = ["ttf"] }
 ffmpeg-sidecar = "2.4"
 
 # Error handling