fix: TypeScript strict mode errors in server and services

api/server.ts

@@ -22,7 +22,7 @@ app.use(cors({
 app.use(express.json())
 
 // Health check
-app.get('/api/health', (req, res) => {
+app.get('/api/health', (_req, res) => {
   res.json({ status: 'ok', timestamp: new Date().toISOString() })
 })
 
@@ -34,7 +34,7 @@ app.use('/api/hetzner', hetznerRouter)
 app.use('/api/wp-monitor', wpMonitorRouter)
 
 // Error handling
-app.use((err: any, req: express.Request, res: express.Response, next: express.NextFunction) => {
+app.use((err: any, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
   console.error('Server error:', err)
   res.status(500).json({ error: 'Internal server error' })
 })