fix(mindspace): edit_file 落盘、Finish 聊天 merge 与回归守卫

- finish-sync 支持 edit_file 覆盖 public HTML
- Finish 同步 merge 本地流式消息，剥离 agent 内部前缀
- 新增 verify:mindspace-publish-guards 与 AGENTS.md 跨工具说明
- 发版脚本接入回归门禁；103 runtime 发布含备份回退

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

chat-skills.mjs

@@ -13,6 +13,12 @@ const WEB_NEWS_INTENT_PATTERNS = [
   /(?:what(?:'s| is)?\s+the\s+latest|what(?:'s| is)?\s+trending)/i,
 ];
 
+const PAGE_GENERATION_INTENT_PATTERNS = [
+  /(?:生成|做|制作|创建|设计|写|出)(?:一个|一份|个)?(?:H5|h5|HTML|html|网页|页面|活动页|宣传页|落地页|分享页)/u,
+  /(?:帮我|给我).*(?:H5|h5|HTML|html|网页|页面|活动页|宣传页|落地页|分享页)/u,
+  /(?:publish|create|generate|make|build|design).*(?:html|web\s?page|landing\s?page|h5)/i,
+];
+
 export const CHAT_SKILL_DEFINITIONS = [
   {
     id: 'web-search',
@@ -103,7 +109,11 @@ export function buildChatSkillPrompt(promptKey, skillName) {
     case 'analyze':
       return '请深入分析以下内容，给出结构化解读：背景、关键发现、风险或机会、以及建议下一步：';
     case 'generate-page':
-      return `请使用 ${skillName ?? PUBLISH_SKILL_NAME} 技能：在我的专属 MindSpace 发布目录生成静态 HTML 页面，并给出可公网访问的完整链接。`;
+      return (
+        `请使用 ${skillName ?? PUBLISH_SKILL_NAME} 技能：在我的专属 MindSpace 发布目录生成静态 HTML 页面，并给出可公网访问的完整链接。` +
+        '必须先 load_skill，再用 write_file/edit_file 写入 public/页面.html；完成后直接返回 Markdown 可点击公网链接 `[页面标题](URL)`。' +
+        '禁止只给本地路径（如 hello/index.html），禁止询问是否还要发布，除非写文件工具实际失败。'
+      );
     default:
       return '';
   }
@@ -124,6 +134,12 @@ export function filterChatSkills(options, ctx) {
 export function buildAutoChatSkillPrefix(text, grantedSkills = []) {
   const trimmed = String(text ?? '').trim();
   if (!trimmed) return '';
+  if (
+    grantedSkills.includes(PUBLISH_SKILL_NAME) &&
+    PAGE_GENERATION_INTENT_PATTERNS.some((pattern) => pattern.test(trimmed))
+  ) {
+    return buildChatSkillPrompt('generate-page', PUBLISH_SKILL_NAME);
+  }
   if (!grantedSkills.includes('web')) return '';
   if (WEB_NEWS_INTENT_PATTERNS.some((pattern) => pattern.test(trimmed))) {
     return buildWebNewsSkillPrompt('web');
@@ -131,3 +147,21 @@ export function buildAutoChatSkillPrefix(text, grantedSkills = []) {
   if (!WEB_INTENT_PATTERNS.some((pattern) => pattern.test(trimmed))) return '';
   return buildChatSkillPrompt('web', 'web');
 }
+
+export function stripKnownChatSkillPrompt(text) {
+  let next = String(text ?? '').trimStart();
+  const candidates = [];
+  for (const definition of CHAT_SKILL_DEFINITIONS) {
+    if (!definition.promptKey) continue;
+    candidates.push(buildChatSkillPrompt(definition.promptKey, definition.skillName));
+  }
+  candidates.push(buildWebNewsSkillPrompt('web'));
+  candidates.sort((a, b) => b.length - a.length);
+  for (const prompt of candidates) {
+    if (prompt && next.startsWith(prompt)) {
+      next = next.slice(prompt.length);
+      break;
+    }
+  }
+  return next.trim();
+}