feat(usage): 记录并展示失败请求(用户端+管理端)

- 记录失败请求并在用户端/管理端展示;分类下拉改用统一 Select 组件
- 模型过滤改后端 ILIKE 模糊匹配;新增「Key 名称」列(含已删除标记)与按 Key 过滤;时间列移至末列
- 用户可见「已删除 key 失败请求」:OpsErrorLogFilter 加 MatchDeletedKeyOwner,用户侧归属
  放宽为 (user_id OR deleted_key_owner_user_id),让 key 原所有者能看到删除 key 后继续请求
  导致的认证失败记录(他人仍 NotFound,不泄露存在性)
- 迁移 148:ops_error_logs 用户+时间索引

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/views/admin/SettingsView.vue

@@ -4398,6 +4398,35 @@
               </div>
             </div>
           </div>
+
+        <!-- Usage Records Settings -->
+        <div class="card">
+          <div class="border-b border-gray-100 px-6 py-4 dark:border-dark-700">
+            <h2 class="text-lg font-semibold text-gray-900 dark:text-white">
+              {{ t('admin.settings.usageRecords.title') }}
+            </h2>
+            <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
+              {{ t('admin.settings.usageRecords.description') }}
+            </p>
+          </div>
+          <div class="space-y-4 p-6">
+            <!-- User error requests visibility -->
+            <div class="flex items-center justify-between">
+              <div>
+                <label class="text-sm font-medium text-gray-700 dark:text-gray-300">
+                  {{ t('admin.settings.user_error_view.label') }}
+                </label>
+                <p class="text-xs text-gray-500 dark:text-gray-400">
+                  {{ t('admin.settings.user_error_view.description') }}
+                </p>
+              </div>
+              <label class="toggle">
+                <input v-model="form.allow_user_view_error_requests" type="checkbox" />
+                <span class="toggle-slider"></span>
+              </label>
+            </div>
+          </div>
+        </div>
         </div>
         <!-- /Tab: Gateway — Claude Code, Scheduling -->
 
@@ -7190,6 +7219,8 @@ const form = reactive<SettingsForm>({
   available_channels_enabled: false,
   // Affiliate (邀请返利) feature switch
   affiliate_enabled: false,
+  // Allow user view error requests
+  allow_user_view_error_requests: false,
 });
 
 const authSourceDefaults = reactive<AuthSourceDefaultsState>(
@@ -8331,6 +8362,7 @@ async function saveSettings() {
       available_channels_enabled: form.available_channels_enabled,
       // Affiliate (邀请返利) feature switch
       affiliate_enabled: form.affiliate_enabled,
+      allow_user_view_error_requests: form.allow_user_view_error_requests,
     };
 
     // 仅当 openai_fast_policy_settings 已成功从后端加载时才回写，

frontend/src/views/admin/UsageView.vue

@@ -100,17 +100,36 @@
           </div>
         </template>
       </UsageFilters>
-      <UsageTable
-        :data="usageLogs"
-        :loading="loading"
-        :columns="visibleColumns"
-        :server-side-sort="true"
-        :default-sort-key="'created_at'"
-        :default-sort-order="'desc'"
-        @sort="handleSort"
-        @userClick="handleUserClick"
-      />
-      <Pagination v-if="pagination.total > 0" :page="pagination.page" :total="pagination.total" :page-size="pagination.page_size" @update:page="handlePageChange" @update:pageSize="handlePageSizeChange" />
+      <div class="mb-4 flex gap-2 border-b border-gray-200 dark:border-dark-700">
+        <button class="tab" :class="{ 'tab-active': activeTab === 'usage' }" @click="activeTab = 'usage'">
+          {{ t('usage.tabs.usage') }}
+        </button>
+        <button class="tab" :class="{ 'tab-active': activeTab === 'errors' }" @click="switchToErrorsTab">
+          {{ t('usage.tabs.errors') }}
+        </button>
+      </div>
+      <div v-show="activeTab === 'usage'">
+        <UsageTable
+          :data="usageLogs"
+          :loading="loading"
+          :columns="visibleColumns"
+          :server-side-sort="true"
+          :default-sort-key="'created_at'"
+          :default-sort-order="'desc'"
+          @sort="handleSort"
+          @userClick="handleUserClick"
+        />
+        <Pagination v-if="pagination.total > 0" :page="pagination.page" :total="pagination.total" :page-size="pagination.page_size" @update:page="handlePageChange" @update:pageSize="handlePageSizeChange" />
+      </div>
+      <div v-show="activeTab === 'errors'">
+        <OpsErrorLogTable
+          :rows="errRows" :total="errTotal" :loading="errLoading"
+          :page="errPage" :page-size="errPageSize"
+          @openErrorDetail="openError"
+          @update:page="onErrPage"
+          @update:pageSize="onErrPageSize" />
+        <OpsErrorDetailModal v-model:show="showErrorModal" :error-id="selectedErrorId" :error-type="'request'" />
+      </div>
     </div>
   </AppLayout>
   <UsageExportProgress :show="exportProgress.show" :progress="exportProgress.progress" :current="exportProgress.current" :total="exportProgress.total" :estimated-time="exportProgress.estimatedTime" @cancel="cancelExport" />
@@ -144,6 +163,10 @@ import UsageStatsCards from '@/components/admin/usage/UsageStatsCards.vue'; impo
 import UsageTable from '@/components/admin/usage/UsageTable.vue'; import UsageExportProgress from '@/components/admin/usage/UsageExportProgress.vue'
 import UsageCleanupDialog from '@/components/admin/usage/UsageCleanupDialog.vue'
 import UserBalanceHistoryModal from '@/components/admin/user/UserBalanceHistoryModal.vue'
+import OpsErrorLogTable from '@/views/admin/ops/components/OpsErrorLogTable.vue'
+import OpsErrorDetailModal from '@/views/admin/ops/components/OpsErrorDetailModal.vue'
+import { listErrorLogs } from '@/api/admin/ops'
+import type { OpsErrorLog } from '@/api/admin/ops'
 import ModelDistributionChart from '@/components/charts/ModelDistributionChart.vue'; import GroupDistributionChart from '@/components/charts/GroupDistributionChart.vue'; import TokenUsageTrend from '@/components/charts/TokenUsageTrend.vue'
 import EndpointDistributionChart from '@/components/charts/EndpointDistributionChart.vue'
 import Icon from '@/components/icons/Icon.vue'
@@ -432,6 +455,12 @@ const applyFilters = () => {
   loadStats()
   loadModelStats(modelDistributionSource.value, true)
   loadChartData()
+  errPage.value = 1
+  if (activeTab.value === 'errors') {
+    loadAdminErrors()
+  } else {
+    errRows.value = []
+  }
 }
 const refreshData = () => {
   invalidateModelStatsCache()
@@ -439,6 +468,7 @@ const refreshData = () => {
   loadStats(true)
   loadModelStats(modelDistributionSource.value, true)
   loadChartData()
+  if (activeTab.value === 'errors') loadAdminErrors()
 }
 const resetFilters = () => {
   const range = getLast24HoursRangeDates()
@@ -592,6 +622,47 @@ const loadSavedColumns = () => {
   }
 }
 
+// Error tab state
+const activeTab = ref<'usage' | 'errors'>('usage')
+const errRows = ref<OpsErrorLog[]>([])
+const errLoading = ref(false)
+const errPage = ref(1)
+const errPageSize = ref(20)
+const errTotal = ref(0)
+const showErrorModal = ref(false)
+const selectedErrorId = ref<number | null>(null)
+
+// 注意：'YYYY-MM-DDT00:00:00' 无时区后缀，按本地时区解析后再转 UTC——与页面其它日期处理语义一致，刻意如此，勿改成 'T00:00:00Z'
+const toRFC3339 = (d: string | undefined, endOfDay = false): string | undefined =>
+  d ? new Date(d + (endOfDay ? 'T23:59:59.999' : 'T00:00:00')).toISOString() : undefined
+
+const loadAdminErrors = async () => {
+  errLoading.value = true
+  try {
+    const resp = await listErrorLogs({
+      page: errPage.value,
+      page_size: errPageSize.value,
+      view: 'all',
+      start_time: toRFC3339(filters.value.start_date),
+      end_time: toRFC3339(filters.value.end_date, true),
+      user_id: filters.value.user_id ?? undefined,
+      api_key_id: filters.value.api_key_id ?? undefined,
+    })
+    errRows.value = resp.items
+    errTotal.value = resp.total
+  } catch (error) {
+    console.error('Failed to load admin errors:', error)
+    appStore.showError(t('usage.errors.failedToLoad'))
+  } finally {
+    errLoading.value = false
+  }
+}
+
+const onErrPage = (p: number) => { errPage.value = p; loadAdminErrors() }
+const onErrPageSize = (s: number) => { errPageSize.value = s; errPage.value = 1; loadAdminErrors() }
+const openError = (id: number) => { selectedErrorId.value = id; showErrorModal.value = true }
+const switchToErrorsTab = () => { activeTab.value = 'errors'; if (errRows.value.length === 0) loadAdminErrors() }
+
 const showColumnDropdown = ref(false)
 const columnDropdownRef = ref<HTMLElement | null>(null)