Dabil
## Overview Implement MiniaudioAudioSystem as the first real audio backend. --- ## Tasks ### Backend * [ ] Add miniaudio dependency * [ ] Create MiniaudioAudioSystem * [ ] Initialization * [ ] Shutdown ### Sound Effects * [ ] playSound support * [ ] Volume support * [ ] Multiple sound playback ### Music * [ ] playMusic support * [ ] Loop support * [ ] Stop support ### Fallback * [ ] Graceful backend failure handling * [ ] NullAudioSystem fallback --- ## Acceptance Criteria * Sounds play successfully. * Music playback works. * Backend failure does not crash TUI.