fix(aihr): validate pilot export date window

frontend/src/views/train/reviews.vue

@@ -147,6 +147,7 @@ import { Refresh } from '@element-plus/icons-vue';
 import { ElMessage } from 'element-plus';
 import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue';
 import { calibratePracticeSession, exportPracticePilotCsv, listPracticeScenarios, type PracticeScenarioResponse } from '@/api/aihr/practice';
+import { resolvePilotDateWindow } from './pilot-export';
 import {
   getPracticeAudioBlobUrl,
   getOrgSnapshot,
@@ -174,6 +175,7 @@ const metrics = reactive({ calibrationCount: 0, consistency: '--', sopUsable: '-
 const audioSources = ref<Record<string, string>>({});
 const audioLoading = ref<Record<string, boolean>>({});
 const audioErrors = ref<Record<string, string>>({});
+const pilotDateWindow = computed(() => resolvePilotDateWindow([startDate.value, endDate.value]));
 
 const reviewForm = reactive({
   reviewer: '主管',
@@ -258,8 +260,16 @@ const loadReviews = async () => {
 };
 
 const loadMetrics = async () => {
+  const dateWindow = pilotDateWindow.value;
+  if (!dateWindow) {
+    metrics.calibrationCount = 0;
+    metrics.consistency = '--';
+    metrics.sopUsable = '--';
+    metrics.ready = false;
+    return;
+  }
   try {
-    const blob = await exportPracticePilotCsv({ startDate: startDate.value, endDate: endDate.value });
+    const blob = await exportPracticePilotCsv(dateWindow);
     const csv = await blob.text();
     const value = (key: string) => csv.match(new RegExp(`(?:^|\\n)"?${key}"?,"?([^"\\n]*)`))?.[1] || '';
     metrics.calibrationCount = Number(value('calibration_sample_count')) || 0;
@@ -275,13 +285,18 @@ const loadMetrics = async () => {
 };
 
 const exportPilot = async () => {
+  const dateWindow = pilotDateWindow.value;
+  if (!dateWindow) {
+    ElMessage.warning('请选择有效的试点起止日期');
+    return;
+  }
   exporting.value = true;
   try {
-    const blob = await exportPracticePilotCsv({ startDate: startDate.value, endDate: endDate.value });
+    const blob = await exportPracticePilotCsv(dateWindow);
     const url = URL.createObjectURL(blob);
     const link = document.createElement('a');
     link.href = url;
-    link.download = `aihr-pilot-${startDate.value}-${endDate.value}.csv`;
+    link.download = `aihr-pilot-${dateWindow.startDate}-${dateWindow.endDate}.csv`;
     link.click();
     URL.revokeObjectURL(url);
     ElMessage.success('试点 CSV 已导出');