Initial commit: RehearsalHub POC

Full-stack self-hosted band rehearsal platform:

Backend (FastAPI + SQLAlchemy 2.0 async):
- Auth with JWT (register, login, /me, settings)
- Band management with Nextcloud folder integration
- Song management with audio version tracking
- Nextcloud scan to auto-import audio files
- Band membership with link-based invite system
- Song comments
- Audio analysis worker (BPM, key, loudness, waveform)
- Nextcloud activity watcher for auto-import
- WebSocket support for real-time annotation updates
- Alembic migrations (0001–0003)
- Repository pattern, Ruff + mypy configured

Frontend (React 18 + Vite + TypeScript strict):
- Login/register page with post-login redirect
- Home page with band list and creation form
- Band page with member panel, invite link, song list, NC scan
- Song page with waveform player, annotations, comment thread
- Settings page for per-user Nextcloud credentials
- Invite acceptance page (/invite/:token)
- ESLint v9 flat config + TypeScript strict mode

Infrastructure:
- Docker Compose: PostgreSQL, Redis, API, worker, watcher, nginx
- nginx reverse proxy for static files + /api/ proxy
- make check runs all linters before docker compose build

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,56 @@
+# ── Environment & secrets ─────────────────────────────────────────────────────
+.env
+.env.*
+!.env.example
+*.pem
+*.key
+*.crt
+
+# ── Python ────────────────────────────────────────────────────────────────────
+__pycache__/
+*.py[cod]
+*.pyo
+.venv/
+venv/
+.uv/
+*.egg-info/
+dist/
+build/
+.mypy_cache/
+.ruff_cache/
+.pytest_cache/
+.coverage
+htmlcov/
+
+# ── Node / Frontend ───────────────────────────────────────────────────────────
+node_modules/
+web/dist/
+web/.vite/
+*.tsbuildinfo
+
+# ── Docker ────────────────────────────────────────────────────────────────────
+docker-compose.override.yml
+
+# ── Database & storage ────────────────────────────────────────────────────────
+*.sqlite
+*.db
+pgdata/
+redisdata/
+
+# ── OS ────────────────────────────────────────────────────────────────────────
+.DS_Store
+Thumbs.db
+
+# ── IDE ───────────────────────────────────────────────────────────────────────
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# ── Nextcloud local volumes ───────────────────────────────────────────────────
+nextcloud/data/
+nextcloud/config/
+nextcloud/apps/
+
+# ── Traefik ───────────────────────────────────────────────────────────────────
+traefik/acme.json