feat: add complete frontend with React, Tailwind 4K, and Docker setup

- Vite + React 18 + TypeScript scaffolding
- Tailwind CSS configured for 4K dark theme (24px base)
- Three full-screen rotating views: Network Topology (D3.js),
  Kanban Board (Odoo tasks), Calendar (Odoo events)
- Hooks for data fetching, WebSocket, and view rotation
- Header with live clock and connection status
- Framer Motion fade transitions between views
- Docker Compose with backend (host network for nmap) and
  frontend (nginx proxy to backend API/WS)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/.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?