feat: integrate FlareSolverr for Cloudflare bypass on clone sources

- Add FLARESOLVERR_URL env var to .env.example
- Update fetchSourceFurnidata to fall back to FlareSolverr on CF challenges (403/HTML)
- Add docker-compose.yml with FlareSolverr service
- Add scripts/health-check.sh for FlareSolverr readiness check
- Add health:check script to package.json
- Document FlareSolverr setup in README

package.json

@@ -24,6 +24,7 @@
 		"db:studio": "drizzle-kit studio",
 		"db:introspect": "drizzle-kit introspect",
 		"jobs:worker": "tsx scripts/jobs-worker.ts",
+		"health:check": "bash scripts/health-check.sh",
 		"prepare": "husky"
 	},
 	"lint-staged": {