feat: initial commit - Supervisor UI with Next.js 16 and Tailwind CSS 4

- Modern web interface for Supervisor process management
- Built with Next.js 16 (App Router) and Tailwind CSS 4
- Full XML-RPC client implementation for Supervisor API
- Real-time process monitoring with auto-refresh
- Process control: start, stop, restart operations
- Modern dashboard with system status and statistics
- Dark/light theme with OKLCH color system
- Docker multi-stage build with runtime env var configuration
- Gitea CI/CD workflow for automated builds
- Comprehensive documentation (README, IMPLEMENTATION, DEPLOYMENT)

Features:
- Backend proxy pattern for secure API communication
- React Query for state management and caching
- TypeScript strict mode with Zod validation
- Responsive design with mobile support
- Health check endpoint for monitoring
- Non-root user security in Docker

Environment Variables:
- SUPERVISOR_HOST, SUPERVISOR_PORT
- SUPERVISOR_USERNAME, SUPERVISOR_PASSWORD (optional)
- Configurable at build-time and runtime

🤖 Generated with Claude Code (https://claude.com/claude-code)

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

.dockerignore

@@ -0,0 +1,59 @@
+# Dependencies
+node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# Build output
+.next
+out
+dist
+build
+
+# Git
+.git
+.gitignore
+.gitattributes
+
+# IDE
+.vscode
+.idea
+*.swp
+*.swo
+*~
+
+# Environment files
+.env
+.env.local
+.env.*.local
+.env.production
+
+# Testing
+coverage
+.nyc_output
+*.test.ts
+*.test.tsx
+*.spec.ts
+*.spec.tsx
+
+# Misc
+.DS_Store
+*.pem
+.cache
+.turbo
+.vercel
+
+# Documentation
+README.md
+CHANGELOG.md
+LICENSE
+docs
+
+# CI/CD
+.github
+.gitlab-ci.yml
+.travis.yml
+
+# Claude
+.claude