feat(wechat): add admin-pluggable LLM intent router separate from H5.

Give WeChat MP its own chat.general→page.generate LLM refinement layer with memindadm toggles, shadow mode, and canary openids so service account routing stays independent of the H5 chatIntentRouter.

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

ops/src/api/admin.ts

@@ -738,6 +738,48 @@ export async function resumeWechatDigest(id: string) {
   });
 }
 
+export type WechatIntentRouterAdminConfig = {
+  enabled: boolean;
+  shadowMode: boolean;
+  modelProviderKeyId: string | null;
+  model: string | null;
+  minConfidence: number;
+  timeoutMs: number;
+  canaryOpenids: string[];
+  updatedAt?: number | null;
+  updatedBy?: string | null;
+};
+
+export type WechatIntentRouterConfigState = {
+  config: WechatIntentRouterAdminConfig;
+};
+
+export type WechatIntentRouterRuntimeState = {
+  source: string;
+  updatedAt: number | null;
+  updatedBy: string | null;
+  fingerprint?: string;
+  overrides: Record<string, string>;
+  config: WechatIntentRouterAdminConfig;
+};
+
+export async function fetchWechatIntentRouterConfig() {
+  return adminFetch<WechatIntentRouterConfigState>('/admin-api/wechat/intent-router/config');
+}
+
+export async function patchWechatIntentRouterConfig(
+  patch: Partial<Omit<WechatIntentRouterAdminConfig, 'updatedAt' | 'updatedBy'>>,
+) {
+  return adminFetch<WechatIntentRouterConfigState>('/admin-api/wechat/intent-router/config', {
+    method: 'PATCH',
+    body: JSON.stringify(patch),
+  });
+}
+
+export async function fetchWechatIntentRouterRuntime() {
+  return adminFetch<WechatIntentRouterRuntimeState>('/admin-api/wechat/intent-router/runtime');
+}
+
 // ─── Agent Code Run ───────────────────────────────────────────────────────────
 
 export type AgentCodeRunConfigShape = {