Initial commit: Music Hub collaboration platform

Full-stack music production collaboration tool with:
- SvelteKit frontend with Design System (CSS vars, 8 shared components)
- Hono API with auth, projects, tracks, versions, comments
- PostgreSQL + Drizzle ORM (8 tables, roles, permissions)
- S3-compatible storage with presigned upload URLs
- wavesurfer.js audio player with waveform visualization
- A/B version comparison with synchronized playback
- Timestamped comments with threading and resolve workflow
- Magic Link authentication with Resend email integration
- Background audio processing (ffmpeg transcode + waveform peaks)
- Role-based access control (Owner, Engineers, Artist, Label, Management, Viewer)
- Toast notifications, skeleton loading, responsive layout
- Docker deployment setup (API + Web + Postgres)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,27 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    ports:
+      - "5433:5432"
+    environment:
+      POSTGRES_USER: musichub
+      POSTGRES_PASSWORD: musichub
+      POSTGRES_DB: musichub
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+
+  minio:
+    image: minio/minio
+    command: server /data --console-address ":9001"
+    ports:
+      - "9000:9000"
+      - "9001:9001"
+    environment:
+      MINIO_ROOT_USER: minioadmin
+      MINIO_ROOT_PASSWORD: minioadmin
+    volumes:
+      - miniodata:/data
+
+volumes:
+  pgdata:
+  miniodata: