Major feature release with preset system, extraction history, frame preview, and batch extraction.
- Preset system to save, browse, and apply named extraction presets
- Extraction history with one-click open folder and copy path
- Frame preview screen with scrubber and set-as-start/end controls
- Batch extraction across multiple time ranges in a single run
- Live frame count and estimated output size display
- Video metadata card showing duration, resolution, FPS, and codec
- Drag and drop video files onto the app window
- Settings persistence across sessions
- Real-time time range validation with inline error messages
- Close confirmation dialog when extraction is in progress
