Remove stray X-flip in minimap display shader that mirrored the map
horizontally (West on right instead of East). Fix arrow rotation
fallback path (missing negation) and add character-facing-relative
arrow in rotateWithCamera mode.
Compact key ring: 24px slots in 8-column grid, only show rows with
items, hide when empty. Add Show Key Ring toggle in Settings with
persistence.
- Tighten celestial glow falloff and edge fade to eliminate visible quad boundary
- Add opacity support to minimap display shader, synced with UI opacity setting
- Fix audio double/triple-scaling by removing redundant master volume multiplications
- Rename "Original Soundtrack" toggle to "Enable WoWee Music"
- Add About tab with developer info and GitHub link