feat(platform): share vehicle service verdict logic

vehicle-data-platform/apps/web/src/pages/VehicleDetail.tsx

@@ -7,6 +7,7 @@ import { PageHeader } from '../components/PageHeader';
 import { SourceStatusTags } from '../components/SourceStatusTags';
 import { StatusTag } from '../components/StatusTag';
 import { isLikelyVIN } from '../domain/vehicleLookup';
+import { summarizeVehicleService } from '../domain/vehicleService';
 
 type VehicleQuery = {
   keyword: string;
@@ -69,13 +70,6 @@ type VehicleServiceAction = {
   onClick: () => void;
 };
 
-type VehicleServiceConclusion = {
-  status: string;
-  color: 'green' | 'orange' | 'red';
-  risk: string;
-  nextStep: string;
-};
-
 async function copyVehicleServiceURL() {
   try {
     await navigator.clipboard.writeText(`${window.location.origin}${window.location.pathname}${window.location.hash}`);
@@ -237,62 +231,14 @@ export function VehicleDetail({
     onQueryChange?.(nextQuery.keyword, nextQuery.protocol);
     load(nextQuery);
   };
-  const serviceConclusion = useMemo<VehicleServiceConclusion>(() => {
-    if (!hasResolvedVIN) {
-      return {
-        status: '不可服务',
-        color: 'red',
-        risk: '身份未归并到 VIN',
-        nextStep: '先维护车辆身份绑定，再使用实时、历史和里程服务。'
-      };
-    }
-    if (sourceCount <= 0) {
-      return {
-        status: '不可服务',
-        color: 'red',
-        risk: '没有任何来源证据',
-        nextStep: '优先确认平台转发、端口、订阅和绑定配置。'
-      };
-    }
-    if (onlineSourceCount <= 0) {
-      return {
-        status: '不可服务',
-        color: 'red',
-        risk: '全部来源离线',
-        nextStep: '先恢复至少一个实时来源，再判断车辆状态。'
-      };
-    }
-    if (qualityCount > 0) {
-      return {
-        status: '降级可服务',
-        color: 'orange',
-        risk: `${qualityCount} 项质量问题影响可信度`,
-        nextStep: '先处理质量问题，再将该车用于 BI、告警或对外查询。'
-      };
-    }
-    if (missingProtocols.length > 0) {
-      return {
-        status: '降级可服务',
-        color: 'orange',
-        risk: `缺少 ${missingProtocols.join('、')} 来源`,
-        nextStep: '车辆仍可查询，但需要补齐缺失来源后再做跨来源校验。'
-      };
-    }
-    if (isFiniteNumber(consistencyMileageDelta) && consistencyMileageDelta > 1) {
-      return {
-        status: '降级可服务',
-        color: 'orange',
-        risk: `跨来源里程差异 ${formatCompactNumber(consistencyMileageDelta, ' km')}`,
-        nextStep: '核对各来源总里程口径，确认统计使用的主来源。'
-      };
-    }
-    return {
-      status: '可服务',
-      color: 'green',
-      risk: '身份、来源和核心实时证据可用',
-      nextStep: '可进入实时、历史、RAW 和里程查询继续分析。'
-    };
-  }, [consistencyMileageDelta, hasResolvedVIN, missingProtocols, onlineSourceCount, qualityCount, sourceCount]);
+  const serviceConclusion = useMemo(() => summarizeVehicleService({
+    resolved: hasResolvedVIN,
+    sourceCount,
+    onlineSourceCount,
+    qualityIssueCount: qualityCount,
+    missingProtocols,
+    mileageDeltaKm: consistencyMileageDelta
+  }), [consistencyMileageDelta, hasResolvedVIN, missingProtocols, onlineSourceCount, qualityCount, sourceCount]);
   const qualityFiltersForCurrentVehicle = () => ({
     keyword: resolvedVIN,
     ...(activeProtocol ? { protocol: activeProtocol } : {})