se.cherkasov ad6970d4b5 feat(desktop): GPU rendering, modern GTK4 UI, hotkeys and player 2 ...

- Replace Cairo DrawingArea with custom NesScreen widget using
  GskTextureScaleNode for GPU-accelerated nearest-neighbor rendering
- Migrate from FileChooserNative to FileDialog (GTK 4.10+)
- Add AlertDialog for error display, structured logging via env_logger
- Add FPS counter (F3), NTSC/PAL toggle (F7), fullscreen (F11),
  Esc to quit, save/load state (Ctrl+S/L), volume slider
- Add player 2 keyboard input support
- Fix window proportions by compensating for header bar height

2026-03-18 15:12:06 +03:00

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