Add silence trimming workaround for known upstream Chatterbox multilingual model issue where generated audio contains excessive trailing silence/noise. This is a known issue in the official Chatterbox repo: - https://github.com/resemble-ai/chatterbox/issues/287 - https://github.com/resemble-ai/chatterbox/issues/264 The fix trims trailing silence using RMS energy analysis with a -40dB threshold and 100ms buffer to preserve natural speech endings. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>