feat(平台): 补齐服务端持久化和AI拆解契约

apps/web/lib/api.ts

@@ -8,7 +8,8 @@ async function checkApi(): Promise<boolean> {
   if (probePromise) return probePromise;
   probePromise = (async () => {
     try {
-      const res = await fetch(`${API_BASE}/products`, { method: 'HEAD', signal: AbortSignal.timeout(300) });
+      // 探测一个不依赖数据库的端点（/config/ai 总是返回 200，只要 NestJS 起来了）
+      const res = await fetch(`${API_BASE}/config/ai`, { method: 'GET', signal: AbortSignal.timeout(1500) });
       apiAvailable = res.ok;
     } catch {
       apiAvailable = false;
@@ -37,7 +38,29 @@ export const api = {
   get: <T>(path: string) => request<T>(path),
   post: <T>(path: string, data: unknown) =>
     request<T>(path, { method: 'POST', body: JSON.stringify(data) }),
+  put: <T>(path: string, data: unknown) =>
+    request<T>(path, { method: 'PUT', body: JSON.stringify(data) }),
   patch: <T>(path: string, data: unknown) =>
     request<T>(path, { method: 'PATCH', body: JSON.stringify(data) }),
   delete: <T>(path: string) => request<T>(path, { method: 'DELETE' }),
+  postRaw: async <T>(path: string, data: unknown, timeoutMs = 120000): Promise<T> => {
+    // 调用 AI 类长耗时接口时使用，跳过 checkApi 短路（确保走真实请求）
+    const controller = new AbortController();
+    const tid = setTimeout(() => controller.abort(), timeoutMs);
+    try {
+      const res = await fetch(`${API_BASE}${path}`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(data),
+        signal: controller.signal,
+      });
+      if (!res.ok) {
+        const err = await res.json().catch(() => ({}));
+        throw new Error(err.message || `请求失败: ${res.status}`);
+      }
+      return res.json();
+    } finally {
+      clearTimeout(tid);
+    }
+  },
 };