fix(wechat): recognize news page intents and harden scheduled task delivery

Expand page.generate rules for post-page verbs and link-missing retries,
recover HTML artifacts when shadow LLM agrees, and stop marking scheduled
tasks failed when WeChat notification hits rate limits.

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

wechat-mp.mjs

@@ -2469,6 +2469,12 @@ export function createWechatMpService({
       intent.msgType === 'text' || intent.msgType === 'voice' ? intent.agentText : '';
     const isPageDataRequest = isWechatPageDataTask(resetCandidate);
     const htmlArtifactDeliveryExpected = shouldDeliverWechatHtmlArtifacts(wechatIntent, intent);
+    const allowHtmlArtifactRecovery =
+      htmlArtifactDeliveryExpected
+      || (
+        wechatIntent?.llmShadow?.kind === 'page.generate'
+        && wechatIntent?.llmShadow?.wouldChangeKind === true
+      );
     const sessionPageContinuation =
       isWechatSessionPageContinuation(wechatIntent, resetCandidate);
     const imagePolicy = resolveWechatImageGenerationPolicy({
@@ -2596,7 +2602,7 @@ export function createWechatMpService({
           userId: user.userId,
           sessionId,
           onPageGenerated,
-          allowRecentArtifacts: htmlArtifactDeliveryExpected,
+          allowRecentArtifacts: allowHtmlArtifactRecovery,
           htmlDeliveryAuthority,
         });
         confirmedArtifacts = resolvedConfirmedArtifacts;
@@ -2916,7 +2922,7 @@ export function createWechatMpService({
           userId: user.userId,
           sessionId,
           onPageGenerated,
-          allowRecentArtifacts: htmlArtifactDeliveryExpected,
+          allowRecentArtifacts: allowHtmlArtifactRecovery,
           htmlDeliveryAuthority,
         });
         const linkExistsForRequest =