handlePresignVoiceSample generates voice samples on demand via pocket-tts,
which requires WAV→MP3 transcoding via ffmpeg. The backend was using
distroless/static (no ffmpeg) so all pocket-tts preview requests returned 500.
Switch backend stage to Alpine + ffmpeg, matching the runner image.
- backend/: Go API server and runner binaries with PocketBase + MinIO storage
- ui-v2/: SvelteKit frontend rewrite
- docker-compose-new.yml: compose file for the v2 stack
- .gitea/workflows/release-v2.yaml: CI/CD for backend, runner, and ui-v2 Docker Hub images
- scripts/pb-init.sh: migrate from wget to curl, add superuser bootstrap for fresh installs
- .env.example: document DOCKER_BUILDKIT=1 for Colima users