feat(audio): scale volume by slap amplitude
Harder slaps now play louder sounds. Uses beep/effects.Volume with a logarithmic curve mapping detected amplitude to playback volume: - Light taps (~0.05g): play at ~1/8 volume - Hard slaps (~0.8g+): play at full volume Also updates deps and adds Go 1.26+ build requirement to README. Closes #32
5 files changed+100−10
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