fix: 库存统计口径统一包含Inventory+Abnormal

inventory-stats端点只过滤status=Inventory，但/list的category=Inventory
包含Inventory+Abnormal，导致统计数和下钻列表不一致。统一为两者都包含。

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/server/routes/vehicles.ts

@@ -951,7 +951,7 @@ app.get('/list', async (c) => {
 // GET /api/vehicles/inventory-stats — grouped inventory stats for the inventory statistics section
 app.get('/inventory-stats', async (c) => {
   const vehicles = await getVehicles();
-  const inventory = vehicles.filter((v) => v.status === 'Inventory');
+  const inventory = vehicles.filter((v) => v.status === 'Inventory' || v.status === 'Abnormal');
 
   const TYPE_NAME_MAP: Record<string, string> = {
     t4_5: '4.5T普货',