refactor: 全局适配 ApiFamily/EndpointKind 结构化标识体系

将新的 (ApiFamily, EndpointKind) / `family:kind` 签名体系应用到整个代码库：
- API Handlers: 所有 adapter/handler 使用新的签名格式
- Services: provider, model, usage, cache, auth 等服务层适配
- Database: ProviderEndpoint 新增 api_family/endpoint_kind 字段
- Frontend: Provider 管理、Usage 表格等组件适配
- Tests: 更新所有相关测试用例

frontend/src/features/providers/components/PriorityManagementDialog.vue

@@ -485,7 +485,7 @@ function handleDialogUpdate(value: boolean) {
 
 // 主 Tab 状态
 const activeMainTab = ref<'provider' | 'key'>('provider')
-const activeFormatTab = ref<string>('CLAUDE')
+const activeFormatTab = ref<string>('claude:chat')
 
 // 提供商排序状态
 const sortedProviders = ref<ProviderWithEndpointsSummary[]>([])

frontend/src/features/usage/components/RequestDetailDrawer.vue

@@ -525,6 +525,7 @@ import Tabs from '@/components/ui/tabs.vue'
 import TabsContent from '@/components/ui/tabs-content.vue'
 import { Copy, Check, Maximize2, Minimize2, Columns2, RefreshCw, X, Monitor, Server, MessageSquareText, Code2 } from 'lucide-vue-next'
 import { dashboardApi, type RequestDetail } from '@/api/dashboard'
+import { API_FORMAT_LABELS } from '@/api/endpoints/types'
 import { log } from '@/utils/logger'
 
 // 子组件
@@ -818,15 +819,13 @@ function formatDateTime(dateStr: string | null | undefined): string {
 
 function formatApiFormat(format: string | null | undefined): string {
   if (!format) return '-'
-  const formatMap: Record<string, string> = {
-    'CLAUDE': 'Claude',
-    'CLAUDE_CLI': 'Claude CLI',
-    'OPENAI': 'OpenAI',
-    'OPENAI_CLI': 'OpenAI CLI',
-    'GEMINI': 'Gemini',
-    'GEMINI_CLI': 'Gemini CLI',
-  }
-  return formatMap[format.toUpperCase()] || format
+  const raw = (format || '').trim()
+  return (
+    API_FORMAT_LABELS[raw] ||
+    API_FORMAT_LABELS[raw.toLowerCase()] ||
+    API_FORMAT_LABELS[raw.toUpperCase()] ||
+    raw
+  )
 }
 
 function formatNumber(num: number): string {

frontend/src/features/usage/components/UsageRecordsTable.vue

@@ -543,6 +543,7 @@ import { RefreshCcw, Search } from 'lucide-vue-next'
 import { formatTokens, formatCurrency } from '@/utils/format'
 import { formatDateTime } from '../composables'
 import { useRowClick } from '@/composables/useRowClick'
+import { API_FORMAT_LABELS } from '@/api/endpoints/types'
 import type { UsageRecord } from '../types'
 
 export interface UserOption {
@@ -689,15 +690,13 @@ onUnmounted(() => {
 
 // 格式化 API 格式显示名称
 function formatApiFormat(format: string): string {
-  const formatMap: Record<string, string> = {
-    'CLAUDE': 'Claude',
-    'CLAUDE_CLI': 'Claude CLI',
-    'OPENAI': 'OpenAI',
-    'OPENAI_CLI': 'OpenAI CLI',
-    'GEMINI': 'Gemini',
-    'GEMINI_CLI': 'Gemini CLI',
-  }
-  return formatMap[format.toUpperCase()] || format
+  const raw = (format || '').trim()
+  return (
+    API_FORMAT_LABELS[raw] ||
+    API_FORMAT_LABELS[raw.toLowerCase()] ||
+    API_FORMAT_LABELS[raw.toUpperCase()] ||
+    raw
+  )
 }
 
 // 判断是否应该显示格式转换信息
@@ -711,7 +710,7 @@ function shouldShowFormatConversion(record: UsageRecord): boolean {
     return true
   }
   // 同族格式差异（精确字符串比较，不区分大小写）
-  return record.api_format.toUpperCase() !== record.endpoint_api_format.toUpperCase()
+  return record.api_format.trim().toLowerCase() !== record.endpoint_api_format.trim().toLowerCase()
 }
 
 // 获取 API 格式的 tooltip（包含转换信息）