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>

docker-compose.yaml

@@ -0,0 +1,15 @@
+services:
+  backend:
+    build: ./backend
+    restart: always
+    network_mode: host
+    volumes:
+      - ./backend/config:/app/config
+
+  frontend:
+    build: ./frontend
+    restart: always
+    ports:
+      - "80:80"
+    extra_hosts:
+      - "backend:host-gateway"