- Replace vmsg WASM encoder with native MediaRecorder API (WebM/Opus)
to fix empty MP3 files causing OpenAI Whisper 400 errors
- Add minimum recording duration (2s) and file size (5KB) guards
- Add MinIO S3 storage integration for recipe images and audio
- Add /uploads/* API route that proxies files from MinIO with local fallback
- Save audio locally first for transcription, then upload to MinIO
(fixes ECONNREFUSED when backend tried to fetch its own public URL)
- Add docker-compose.prod.yml, nginx-prod.conf, frontend Dockerfile
- Frontend Dockerfile: no-cache headers on index.html, long cache on hashed assets
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
