fix(scheduling): use current year mileage for consistent data display

- Add currentYearMileage to SchedulingVehicleInfo (backend + frontend)
- Compute completionRate as currentYearMileage/yearTarget (year-based)
  instead of using overall completion_rate from DB
- Display "本年已跑" instead of "累计" in detail modal
- Fix reason text to show year completion rate

Before: 累计 4.6万, 考核 3.0万, 完成率 12.1% (mismatched periods)
After:  本年已跑 8.3万, 考核 3.0万, 完成率 275% (consistent year-based)

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

src/server/routes/scheduling/algorithm.ts

@@ -35,13 +35,16 @@ export function classifyVehicle(
 import type { SchedulingVehicleInfo } from './types.js';
 
 export function toVehicleInfo(v: EnrichedVehicle): SchedulingVehicleInfo {
+  // Use current year completion rate instead of overall
+  const yearCompletionRate = v.yearTarget > 0 ? v.currentYearMileage / v.yearTarget : 0;
   return {
     plateNumber: v.plateNumber,
     targetId: v.targetId,
     targetName: v.targetName,
     vehicleType: v.vehicleType,
     totalMileage: v.totalMileage,
-    completionRate: v.completionRate,
+    currentYearMileage: v.currentYearMileage,
+    completionRate: yearCompletionRate,
     yearTarget: v.yearTarget,
     region: v.region,
     province: v.province,
@@ -152,7 +155,8 @@ export function generateSuggestions(
       })
       .slice(0, 5);
 
-    const reason = `${vehicle.customer}日均里程 ${Math.round(vehicle.customerAvgDaily)} KM（高里程），该车已达标（完成率 ${Math.round(vehicle.completionRate * 100)}%），建议换上里程缺口大的车辆以加速达标。`;
+    const yearRate = vehicle.yearTarget > 0 ? Math.round((vehicle.currentYearMileage / vehicle.yearTarget) * 100) : 0;
+    const reason = `${vehicle.customer}日均里程 ${Math.round(vehicle.customerAvgDaily)} KM（高里程），该车本年完成率 ${yearRate}%，建议换上里程缺口大的车辆以加速达标。`;
 
     suggestions.push({
       id: `qualified-${vehicle.plateNumber}`,