fix(scheduling): only suggest replacements for rented/operated vehicles

Filter enriched vehicles to only include rent_status = '租赁' or '自营'.
Inventory candidates already filtered by truck_rent_status = 0 (在库).

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

src/server/routes/scheduling/suggestions.ts

@@ -179,6 +179,11 @@ app.get('/', async (c) => {
 
       const plate = row.plate_number as string;
       const info = vehicleInfoMap.get(plate);
+
+      // Only include vehicles that are actively rented/operated (租赁 or 自营)
+      const rentStatus = info?.rent_status || '';
+      if (rentStatus !== '租赁' && rentStatus !== '自营') continue;
+
       const loc = locationMap.get(plate);
       const truckType = truckTypeMap.get(plate);