- Add CacheManager to handle caching for proxy and mirror handlers
- Introduce cache-related API endpoints for stats, enabling, and clearing
- Modify proxy and mirror handlers to support caching GET requests
- Remove rate limiting and simplify request handling
- Update go.mod dependencies and remove unused imports
- Add cache hit/miss headers to responses
- Enhance metrics collection for cached requests
- Modify fetch API calls in dashboard, login, and config pages
- Update routes to consistently use /admin/api/ endpoint
- Ensure uniform API route handling across frontend components
- Remove legacy static files, templates, and JavaScript
- Update main.go to serve SPA-style web application
- Modify admin route handling to support client-side routing
- Simplify configuration and metrics API endpoints
- Remove server-side template rendering in favor of static file serving
- Update Dockerfile and GitHub Actions to build web frontend
