feat: add Coolify deployment config (Docker Compose + ServeStatic)

- Add multi-stage Dockerfile (node:22-alpine, pnpm, Chromium for Playwright)
- Add docker-compose.coolify.yml with api, worker, redis services
- Add @nestjs/serve-static for serving Vite frontend from NestJS
- Add .dockerignore

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

apps/api/package.json

@@ -26,6 +26,7 @@
     "@nestjs/core": "^10.4.0",
     "@nestjs/platform-express": "^10.4.0",
     "@nestjs/schedule": "^4.1.0",
+    "@nestjs/serve-static": "^5.0.4",
     "@nestjs/swagger": "^8.1.0",
     "@nestjs/throttler": "^6.3.0",
     "@opentelemetry/api": "^1.9.0",