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>

apps/api/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "@music-hub/api",
+  "version": "0.0.1",
+  "type": "module",
+  "scripts": {
+    "dev": "bun run --hot src/index.ts",
+    "build": "bun build src/index.ts --outdir dist --target bun"
+  },
+  "dependencies": {
+    "@aws-sdk/client-s3": "^3",
+    "@aws-sdk/s3-request-presigner": "^3",
+    "@hono/zod-validator": "^0.5",
+    "@music-hub/db": "workspace:*",
+    "@music-hub/shared": "workspace:*",
+    "drizzle-orm": "^0.44",
+    "hono": "^4",
+    "resend": "^6.10.0"
+  }
+}