Add React/TypeScript web interface with Chakra UI and SignalR integration

Implement web frontend using Vite + React + TypeScript with:
- Chakra UI component library for theming and styling
- SignalR bridge (lunaBridge) for real-time server communication
- Chat components (ChatPanel, ChatInput, ChatMessage)
- Layout components (AppLayout, Sidebar, StatusBar, SystemPanel)
- Custom useChat hook for conversation state management
- Dark/light theme support via ColorModeProvider
- Mock conversation data for development

WebInterface/.gitignore

@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?