feat: add provider analytics summary

frontend/src/components/GenerationTrace.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, ref, watch } from 'vue'
+import { computed, onBeforeUnmount, ref, watch } from 'vue'
 import { BoltIcon, ClockIcon } from '@heroicons/vue/24/outline'
 import { api } from '../api/client'
 import type {
@@ -29,12 +29,18 @@ const activeJob = ref<GenerationJobDetail | null>(null)
 const providerStats = ref<GenerationProviderStats | null>(null)
 const loading = ref(false)
 const error = ref('')
+let refreshTimer: ReturnType<typeof setInterval> | null = null
 
 const isDark = computed(() => props.tone === 'dark')
 const latestJob = computed(() => jobHistory.value[0] ?? null)
 const activeJobEvents = computed(() => activeJob.value?.events.slice(-10) ?? [])
 const activeProgress = computed(() => activeJob.value?.progress_percent ?? latestJob.value?.progress_percent ?? 0)
 const activeProgressLabel = computed(() => activeJob.value?.progress_label ?? latestJob.value?.progress_label ?? '暂无进度')
+const shouldAutoRefresh = computed(() => {
+  if (activeJob.value) return !activeJob.value.is_terminal
+  if (latestJob.value) return !latestJob.value.is_terminal
+  return false
+})
 const providerSuccessRate = computed(() => {
   if (!providerStats.value?.total_calls) return null
   return Math.round((providerStats.value.successful_calls / providerStats.value.total_calls) * 100)
@@ -195,6 +201,13 @@ async function refresh() {
   }
 }
 
+function stopAutoRefresh() {
+  if (refreshTimer) {
+    clearInterval(refreshTimer)
+    refreshTimer = null
+  }
+}
+
 watch(
   () => props.storyId,
   () => {
@@ -203,6 +216,19 @@ watch(
   { immediate: true },
 )
 
+watch(shouldAutoRefresh, (enabled) => {
+  stopAutoRefresh()
+  if (enabled) {
+    refreshTimer = setInterval(() => {
+      if (!loading.value) {
+        void refresh()
+      }
+    }, 2500)
+  }
+})
+
+onBeforeUnmount(stopAutoRefresh)
+
 defineExpose({ refresh })
 </script>