feat: 模型库能力默认模型UI + 前台Auto默认模型 + AGNES直连修复 + 意图识别增强

frontend/src/api/index.ts

@@ -616,6 +616,12 @@ export const adminAPI = {
 
   setDefaultModel: (id: string) => put<any>(`/admin/models/${id}/set-default`),
 
+  // 按能力默认模型（Auto 自动模式使用）
+  getCapabilities: () => get<any[]>('/admin/models/capabilities'),
+  getCapabilityDefaults: () => get<any>('/admin/models/capability-defaults'),
+  setCapabilityDefault: (capability: string, modelId: string | null) =>
+    put<any>('/admin/models/capability-defaults', { capability, model_id: modelId }),
+
   // Phase 2: Enhanced model management
 
   testModelConnection: (id: string) => post<any>(`/admin/models/${id}/test-connection`),