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>

api/src/rehearsalhub/schemas/__init__.py

@@ -0,0 +1,35 @@
+from rehearsalhub.schemas.annotation import (
+    AnnotationCreate,
+    AnnotationRead,
+    AnnotationUpdate,
+    RangeAnalysisRead,
+    ReactionCreate,
+    ReactionRead,
+)
+from rehearsalhub.schemas.audio_version import AudioVersionCreate, AudioVersionRead
+from rehearsalhub.schemas.auth import LoginRequest, RegisterRequest, TokenResponse
+from rehearsalhub.schemas.band import BandCreate, BandRead, BandReadWithMembers, BandMemberRead
+from rehearsalhub.schemas.member import MemberRead
+from rehearsalhub.schemas.song import SongCreate, SongRead, SongUpdate
+
+__all__ = [
+    "LoginRequest",
+    "RegisterRequest",
+    "TokenResponse",
+    "MemberRead",
+    "BandCreate",
+    "BandRead",
+    "BandReadWithMembers",
+    "BandMemberRead",
+    "SongCreate",
+    "SongRead",
+    "SongUpdate",
+    "AudioVersionCreate",
+    "AudioVersionRead",
+    "AnnotationCreate",
+    "AnnotationUpdate",
+    "AnnotationRead",
+    "RangeAnalysisRead",
+    "ReactionCreate",
+    "ReactionRead",
+]