Release v3.2.1

fix: gate length control and UI improvements

- Fix gate length parameter handler in onParameterChanged
- Fix encoder1 push only adding slots to chain on SONG page
- Fix pot value calculations to properly reach 100%
- Update step function to return outputs when gate ends
- Use self.outputs instead of allocating new arrays each step
- Improve gate timing with proper clock period calculation

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Co-Authored-By: Claude <noreply@anthropic.com>