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>

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "music-hub",
+  "private": true,
+  "packageManager": "bun@1.3.11",
+  "type": "module",
+  "workspaces": ["packages/*", "apps/*"],
+  "scripts": {
+    "dev": "turbo dev",
+    "build": "turbo build",
+    "db:generate": "turbo db:generate --filter=@music-hub/db",
+    "db:migrate": "turbo db:migrate --filter=@music-hub/db",
+    "db:seed": "turbo db:seed --filter=@music-hub/db"
+  },
+  "devDependencies": {
+    "@types/bun": "latest",
+    "turbo": "latest",
+    "typescript": "^5"
+  }
+}