feat: integrate all 10 skills into homelab-topology

- Added api-security-hardening (helmet, rate limits)
- Added nodejs-backend-patterns (error handling)
- Added observability-monitoring (pino logging)
- Added websocket-engineer (socket.io real-time updates)
- Added docker (Multi-stage build, compose)
- Added vitest (testing configuration and store tests)
- Added data-visualizer (MetricsBar and HostChart)
- Added infrastructure-monitoring/proxmox-admin/network-engineer types
- Fixed UI accessibility and styling
- Cleaned up node_modules tracking

server/routes/AGENTS.md

@@ -0,0 +1,49 @@
+# Server Routes (API Endpoints)
+
+**Generated:** 2026-02-19
+**Location:** server/routes/
+
+## OVERVIEW
+
+Express router modules exposing REST API endpoints for the homelab topology.
+
+## ENDPOINTS
+
+| File | Route | Method | Purpose |
+|------|-------|--------|---------|
+| discover.ts | /api/discover | POST | Run SSH discovery on specified hosts |
+| config.ts | /api/config | GET/PUT | Get or update configuration |
+| stats.ts | /api/stats | GET | Retrieve statistics |
+| files.ts | /api/files | GET | Get file topology |
+
+## ADDING A NEW ENDPOINT
+
+1. Create `server/routes/{name}.ts`:
+   ```typescript
+   import { Router } from 'express';
+   const router = Router();
+   
+   router.get('/{name}', (req, res) => {
+     // implementation
+   });
+   
+   export default router;
+   ```
+
+2. Import and mount in `server/index.ts`:
+   ```typescript
+   import newRouter from './routes/{name}';
+   app.use('/api', newRouter);
+   ```
+
+## CONVENTIONS
+
+- All routes prefixed with `/api` (mounted in index.ts)
+- Return JSON on success: `{ data: ... }`
+- On error: `{ error: string }`
+- Use async/await for async operations
+
+## NOTES
+
+- discover.ts: Main endpoint - accepts host list, returns topology data
+- CORS is configured at server/index.ts level, not per-route