fix: fail closed when WeChat page.generate has no HTML artifact

Prevent text-only planning replies from marking WeChat delivery done when
static-page-publish never confirmed a public HTML file.

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

wechat-mp.test.mjs

@@ -3288,8 +3288,8 @@ test('wechat mp service forwards H5 agent text when page generation produced no
   assert.equal(fs.existsSync(htmlPath), false);
   const sendCall = wechatCalls.find(([url]) => String(url).includes('/cgi-bin/message/custom/send'));
   const payload = JSON.parse(sendCall[2]);
-  assert.match(payload.text.content, /🌴 泰国简易攻略/);
-  assert.doesNotMatch(payload.text.content, /没有按 H5 里的页面技能真正生成成功/);
+  assert.doesNotMatch(payload.text.content, /🌴 泰国简易攻略/);
+  assert.match(payload.text.content, /没有按服务号页面技能真正生成成功/);
   assert.doesNotMatch(payload.text.content, /https:\/\/m\.tkmind\.cn\/MindSpace\/.+\/public\/thailand-guide\.html/);
 });
 
@@ -3631,7 +3631,8 @@ test('wechat mp service recreates dedicated session when tool_calls error arrive
   assert.equal(started, true);
   const sendCall = wechatCalls.find(([url]) => String(url).includes('/cgi-bin/message/custom/send'));
   const payload = JSON.parse(sendCall[2]);
-  assert.match(payload.text.content, /已恢复，可以继续对话/);
+  assert.doesNotMatch(payload.text.content, /已恢复，可以继续对话/);
+  assert.match(payload.text.content, /没有按服务号页面技能真正生成成功/);
   assert.doesNotMatch(payload.text.content, /Bad request/);
   assert.doesNotMatch(payload.text.content, /tool_calls/);
 });
@@ -3965,8 +3966,8 @@ test('wechat mp service retries poisoned publish claims before forwarding H5 ret
   const sendCall = wechatCalls.find(([url]) => String(url).includes('/cgi-bin/message/custom/send'));
   const payload = JSON.parse(sendCall[2]);
   assert.doesNotMatch(payload.text.content, /页面都已经成功发布了|主题页面已发布/);
-  assert.match(payload.text.content, /🌴 夏日主题页面/);
-  assert.doesNotMatch(payload.text.content, /没有按 H5 里的页面技能真正生成成功/);
+  assert.doesNotMatch(payload.text.content, /🌴 夏日主题页面/);
+  assert.match(payload.text.content, /没有按服务号页面技能真正生成成功/);
   assert.doesNotMatch(payload.text.content, /summer-breeze-journal\.html/);
 });
 

wechat/handlers/page-generate.mjs

@@ -69,5 +69,11 @@ export function resolvePageGenerateOutcome({
     };
   }
 
-  return { action: 'send', artifacts: sendable };
+  // Fail closed: page.generate must deliver a verified public HTML artifact.
+  // Text-only planning replies ("我先搜索…") must not mark WeChat delivery done.
+  return {
+    action: 'fail',
+    failureText: buildPagePublishFailureText(),
+    reason: 'missing_page_artifact',
+  };
 }

wechat/wechat-channel.test.mjs

@@ -218,3 +218,29 @@ test('resolvePageGenerateOutcome sends when share preview meta is present', () =
   assert.equal(outcome.action, 'send');
   assert.equal(outcome.artifacts.length, 1);
 });
+
+test('resolvePageGenerateOutcome fails closed on planning text without html artifact', () => {
+  const outcome = resolvePageGenerateOutcome({
+    reply: {
+      text: '找到了之前的新闻页面。让我先读取最新的页面格式作为参考，同时并行搜索今日新闻和天气。',
+    },
+    confirmedArtifacts: [],
+    verifiedArtifacts: [],
+  });
+  assert.equal(outcome.action, 'fail');
+  assert.equal(outcome.reason, 'missing_page_artifact');
+  assert.match(outcome.failureText, /没有按服务号页面技能真正生成成功|static-page-publish/);
+});
+
+test('resolvePageGenerateOutcome fails closed when reply links an old page but no artifact confirmed', () => {
+  const outcome = resolvePageGenerateOutcome({
+    reply: {
+      text: '[每日新闻](https://m.tkmind.cn/MindSpace/u/public/daily-news-0728.html)',
+    },
+    confirmedArtifacts: [],
+    verifiedArtifacts: [],
+    replyHasPublicLinks: true,
+  });
+  assert.equal(outcome.action, 'fail');
+  assert.equal(outcome.reason, 'missing_page_artifact');
+});