v1.6.1
fix: make voice/whisper an optional build tag for FFmpeg 6.x compat Default build (`make` or `go build`) no longer requires FFmpeg or whisper.cpp, fixing builds on Ubuntu 24.04 and Debian bookworm which ship FFmpeg 6.x. Voice transcription is now opt-in via the `voice` build tag (`make build-voice` or `go build -tags voice`). Closes #8 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>