docs: comprehensive documentation updates for v2.0.0

- Update README.md with Docker quickstart and new features (label management, hacker theme)
- Add detailed Docker deployment section to DEPLOYMENT.md:
  - docker-compose usage
  - Environment configuration
  - Data persistence and backup
  - Container health checks
  - Troubleshooting steps
  - Production deployment guidance
- Create comprehensive CLAUDE_DESCRIPTION.md:
  - Project overview and version info
  - Recent changes in v2.0.0
  - Technical stack details
  - Core features and file structure
  - State management explanation
  - Data flow diagrams
  - API endpoints reference
  - Development workflow
  - Customization points
  - Performance and security notes

next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.