feat(wechat): add news morning draft admin UI and API routes

Expose preview/push controls for daily-news WeChat draft publishing with
inline HTML body mode in the Wechat admin page.

src/api/client.ts

@@ -55,6 +55,10 @@ import type {
   WechatDeliveryLog,
   WechatDigestSubscription,
   WechatScheduleLlmConfig,
+  WechatNewsMorningDraftConfig,
+  WechatNewsMorningDraftPreview,
+  WechatNewsMorningDraftRun,
+  WechatNewsMorningDraftTemplate,
   WechatIntentRouterAdminConfig,
   WechatIntentRouterConfigState,
   WechatIntentRouterRuntimeState,
@@ -458,6 +462,50 @@ export async function updateWechatScheduleLlmConfig(
   });
 }
 
+export async function getWechatNewsMorningDraftConfig(): Promise<{
+  config: WechatNewsMorningDraftConfig;
+  template: WechatNewsMorningDraftTemplate;
+}> {
+  return portalFetch('/admin-api/wechat/news-morning-draft/config');
+}
+
+export async function patchWechatNewsMorningDraftConfig(
+  patch: Partial<Omit<WechatNewsMorningDraftConfig, 'updatedAt' | 'updatedBy' | 'templateVersion'>>,
+): Promise<WechatNewsMorningDraftConfig> {
+  const result = await portalFetch<{ config: WechatNewsMorningDraftConfig }>(
+    '/admin-api/wechat/news-morning-draft/config',
+    {
+      method: 'PATCH',
+      body: JSON.stringify(patch),
+    },
+  );
+  return result.config;
+}
+
+export async function previewWechatNewsMorningDraft(): Promise<WechatNewsMorningDraftPreview> {
+  return portalFetch<WechatNewsMorningDraftPreview>('/admin-api/wechat/news-morning-draft/preview');
+}
+
+export async function pushWechatNewsMorningDraft(options?: { dryRun?: boolean }): Promise<{
+  ok?: boolean;
+  dryRun?: boolean;
+  draftMediaId?: string;
+  preview?: WechatNewsMorningDraftPreview;
+  run?: WechatNewsMorningDraftRun;
+}> {
+  return portalFetch('/admin-api/wechat/news-morning-draft/push', {
+    method: 'POST',
+    body: JSON.stringify(options ?? {}),
+  });
+}
+
+export async function listWechatNewsMorningDraftRuns(limit = 20): Promise<WechatNewsMorningDraftRun[]> {
+  const result = await portalFetch<{ runs: WechatNewsMorningDraftRun[] }>(
+    `/admin-api/wechat/news-morning-draft/runs?limit=${encodeURIComponent(String(limit))}`,
+  );
+  return result.runs ?? [];
+}
+
 export async function getWechatIntentRouterConfig(): Promise<WechatIntentRouterAdminConfig> {
   const result = await portalFetch<WechatIntentRouterConfigState>('/admin-api/wechat/intent-router/config');
   return result.config;