fix(db): handle None from supabase-py maybe_single().execute()

feat: youtube stats endpoint + nav link

feat(backend): POST /jobs/youtube + GET /jobs/youtube/{id}

chore: drop R2 env vars from examples, use STORAGE_*

feat(backend): add SupabaseStorage adapter (replaces R2 dependency)

feat(backend): demucs two-stem -> mp3 adapter

feat(backend): youtube karaoke pipeline orchestrator

feat(backend): supabase song + job repo

feat(backend): R2 storage wrapper

feat(backend): yt-dlp metadata + audio download wrappers

feat(backend): youtube URL parsing

deps: add yt-dlp, boto3, supabase, python-slugify

feat(infra): supabase schema + r2 config for youtube karaoke

Add pitch/tempo shifting on download

Set baseline stats to 100 visits and 5 downloads

Add Indian tala and time signature detection alongside Western BPM

Add admin dashboard with download history and persistent storage

Fix page scroll overflow, add credits, and add HF Space deployment

Fix before-clip playback by persisting original in output dir

Add before/after clip preview and SEO landing pages

feat(stems): add multi-stem downloads with Playwright e2e coverage

feat(trim): add upload trim range with preview and backend segment processing

feat(rebrand): rename to Opus; broaden SEO for vocal remover, karaoke maker & background music

fix(backend): use asyncio.to_thread for stats IO, guard malformed JSON, isolate test side-effects

feat(backend): add file-based stats counter with /stats and /stats/visit endpoints

feat: add needed scripts

chore: remove faq

chore: pre-deployment cleanup and fixes

fix: threadpool executor for cleanup, shutdown hook, stronger download tests

feat: GET /download/{job_id} endpoint and APScheduler file cleanup

fix: replace assert with RuntimeError guard, truncate stderr before decode

feat: demucs processing worker with asyncio queue and MPS acceleration

fix: cleanup on enqueue failure, MP3 magic byte validation, stronger upload tests

feat: POST /upload endpoint with MP3 validation and size limit

fix: init asyncio queue inside startup event, add QueueFull guard

feat: job store and GET /status/{job_id} endpoint

fix: anchor paths to __file__, add Field validation, trigger lifespan in tests

feat: backend scaffold with health endpoint and pytest setup