AnimatedTexture is deprecated and broken in Godot 4.4. Strip all animated
GIF infrastructure (frame cycling, focus handler, settings UI, frame delay
parsing). GIFs are now always converted to a static first-frame PNG cached
to disk. Banner stitching disk cache and format detection fallback retained.
- Add settings menu with 'Animate GIF covers' toggle (default: off)
- When enabled: extract all GIF frames via ffmpeg, build AnimatedTexture
- When disabled: extract first frame only (static ImageTexture)
- AnimatedTexture starts paused — unpauses only when card has focus
- Focus-based pausing via gui_focus_changed signal (walks up to GameCard)
- Parse GIF89a frame delays for accurate animation speed
- Cache invalidation when setting changes (no restart needed)
- Cache AnimatedTextures in memory to avoid re-extraction
- Bump to v0.1.13
