feat: 添加里程管理 API 路由（monitoring/targets/trend）

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

src/server/index.ts

@@ -4,6 +4,7 @@ import { Hono } from 'hono';
 import { cors } from 'hono/cors';
 import dotenv from 'dotenv';
 import vehiclesRouter from './routes/vehicles.js';
+import mileageRouter from './routes/mileage.js';
 
 dotenv.config();
 
@@ -11,6 +12,7 @@ const app = new Hono();
 
 app.use('/api/*', cors());
 app.route('/api/vehicles', vehiclesRouter);
+app.route('/api/mileage', mileageRouter);
 
 app.get('/api/health', (c) => c.json({ status: 'ok', time: new Date().toISOString() }));