feat: 添加管理员模型配置页面与 config.yaml 模型管理 API

新增 /api/admin/models 路由（读写 config.yaml models 段、连接测试、写前备份），以及工作区「模型配置」管理页与侧栏入口。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-web/src/core/model-management/api.ts

@@ -0,0 +1,107 @@
+import { apiFetch } from "@/core/api";
+import { getBackendBaseURL } from "@/core/config";
+
+export interface ManagedModel {
+  name: string;
+  display_name: string | null;
+  description: string | null;
+  use: string;
+  model: string;
+  base_url: string | null;
+  request_timeout: number | null;
+  max_retries: number | null;
+  max_tokens: number | null;
+  temperature: number | null;
+  stream_usage: boolean | null;
+  supports_thinking: boolean;
+  supports_reasoning_effort: boolean;
+  supports_vision: boolean;
+  when_thinking_enabled: Record<string, unknown> | null;
+  when_thinking_disabled: Record<string, unknown> | null;
+  thinking: Record<string, unknown> | null;
+  use_responses_api: boolean | null;
+  output_version: string | null;
+  extra_settings: Record<string, unknown>;
+  api_key_configured: boolean;
+  api_key_source: string | null;
+  source: "config.yaml";
+}
+
+export interface ManagedModelsResponse {
+  models: ManagedModel[];
+  config_path: string;
+  updated_at: string | null;
+}
+
+export interface ModelSavePayload {
+  name: string;
+  display_name?: string | null;
+  description?: string | null;
+  use: string;
+  model: string;
+  api_key?: string;
+  clear_api_key?: boolean;
+  base_url?: string | null;
+  request_timeout?: number | null;
+  max_retries?: number | null;
+  max_tokens?: number | null;
+  temperature?: number | null;
+  stream_usage?: boolean | null;
+  supports_thinking: boolean;
+  supports_reasoning_effort: boolean;
+  supports_vision: boolean;
+  when_thinking_enabled?: Record<string, unknown> | null;
+  when_thinking_disabled?: Record<string, unknown> | null;
+  thinking?: Record<string, unknown> | null;
+  use_responses_api?: boolean | null;
+  output_version?: string | null;
+  extra_settings: Record<string, unknown>;
+}
+
+export interface ModelConnectionTestResult {
+  success: boolean;
+  latency_ms: number;
+  message: string;
+  preview?: string | null;
+}
+
+async function readError(response: Response, fallback: string): Promise<never> {
+  const payload = await response.json().catch(() => null) as { detail?: string } | null;
+  throw new Error(payload?.detail || fallback);
+}
+
+export async function loadManagedModels(): Promise<ManagedModelsResponse> {
+  const response = await apiFetch(`${getBackendBaseURL()}/api/admin/models`);
+  if (!response.ok) return readError(response, "加载模型配置失败");
+  return response.json() as Promise<ManagedModelsResponse>;
+}
+
+export async function createManagedModel(payload: ModelSavePayload): Promise<ManagedModel> {
+  const response = await apiFetch(`${getBackendBaseURL()}/api/admin/models`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(payload),
+  });
+  if (!response.ok) return readError(response, "创建模型失败");
+  return response.json() as Promise<ManagedModel>;
+}
+
+export async function updateManagedModel(name: string, payload: ModelSavePayload): Promise<ManagedModel> {
+  const response = await apiFetch(`${getBackendBaseURL()}/api/admin/models/${encodeURIComponent(name)}`, {
+    method: "PUT",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(payload),
+  });
+  if (!response.ok) return readError(response, "保存模型配置失败");
+  return response.json() as Promise<ManagedModel>;
+}
+
+export async function testManagedModel(model: ModelSavePayload): Promise<ModelConnectionTestResult> {
+  const response = await apiFetch(`${getBackendBaseURL()}/api/admin/models/test`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ model }),
+  });
+  if (!response.ok) return readError(response, "模型连接测试失败");
+  return response.json() as Promise<ModelConnectionTestResult>;
+}

frontend-web/src/core/model-management/hooks.ts

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+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+
+import {
+  createManagedModel,
+  loadManagedModels,
+  testManagedModel,
+  updateManagedModel,
+  type ModelSavePayload,
+} from "./api";
+
+export const MANAGED_MODELS_QUERY_KEY = ["admin", "model-config"] as const;
+
+export function useManagedModels() {
+  return useQuery({
+    queryKey: MANAGED_MODELS_QUERY_KEY,
+    queryFn: loadManagedModels,
+    staleTime: 10_000,
+    refetchOnWindowFocus: false,
+  });
+}
+
+export function useSaveManagedModel() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({ name, payload, isNew }: { name: string; payload: ModelSavePayload; isNew: boolean }) =>
+      isNew ? createManagedModel(payload) : updateManagedModel(name, payload),
+    onSuccess: async () => {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: MANAGED_MODELS_QUERY_KEY }),
+        queryClient.invalidateQueries({ queryKey: ["models"] }),
+      ]);
+    },
+  });
+}
+
+export function useTestManagedModel() {
+  return useMutation({ mutationFn: testManagedModel });
+}

frontend-web/src/core/model-management/index.ts

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+export * from "./api";
+export * from "./hooks";