feat(mindspace): 0630004 空间 UI、聊天连接、微信分享与 Agent 能力

含 MindSpace 三列布局与统计修复、聊天加载态与连接降级、平台页脚标记与 og:site_name 微信卡片、勾选资料删除 Agent 接口及内部话术过滤。

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

mindspace-pages.mjs

@@ -12,7 +12,8 @@ import {
   bufferToImageDataUri,
 } from './mindspace-thumbnails.mjs';
 import { resolvePublishDir } from './user-publish.mjs';
-import { prepareHtmlDownloadLinks } from './mindspace-html-download-links.mjs';
+import { prepareHtmlDownloadLinks, inferWorkspaceHtmlRelativePath } from './mindspace-html-download-links.mjs';
+import { prepareHtmlPageBrandMarkers } from './mindspace-page-tag.mjs';
 import { purgeWorkspacePageArtifacts, extractAssetIdsFromHtml } from './mindspace-page-purge.mjs';
 import { ensureWorkspaceHtmlThumbnail, workspaceThumbnailRelativePath } from './mindspace-workspace-thumbnails.mjs';
 import { upsertMindspaceCoverMeta } from './mindspace-cover-meta.mjs';
@@ -43,6 +44,18 @@ function pageError(message, code, details) {
   return Object.assign(new Error(message), { code, details });
 }
 
+/** Normalize workspace HTML paths so `demo.html` and `public/demo.html` match. */
+export function normalizeWorkspaceRelativePath(relativePath) {
+  const parts = String(relativePath ?? '')
+    .replace(/^\/+/, '')
+    .split('/')
+    .filter((part) => part && part !== '.' && part !== '..');
+  if (parts.length === 0) return '';
+  if (parts[0].toLowerCase() === 'public') return parts.join('/');
+  if (parts.length === 1 && parts[0].toLowerCase().endsWith('.html')) return `public/${parts[0]}`;
+  return parts.join('/');
+}
+
 function normalizeText(value, maxLength, fieldName) {
   const text = String(value ?? '').normalize('NFKC').trim();
   if (!text) throw pageError(`${fieldName}不能为空`, 'invalid_page_input');
@@ -54,13 +67,16 @@ function normalizeText(value, maxLength, fieldName) {
 
 function normalizePageInput(input) {
   const title = normalizeText(input.title, MAX_TITLE_LENGTH, '标题');
-  const content = normalizeText(input.content, MAX_CONTENT_BYTES, '页面内容');
+  let content = normalizeText(input.content, MAX_CONTENT_BYTES, '页面内容');
+  const contentFormat = input.contentFormat === 'html' ? 'html' : 'markdown';
+  if (contentFormat === 'html') {
+    content = prepareHtmlPageBrandMarkers(content);
+  }
   const contentBytes = Buffer.byteLength(content, 'utf8');
   if (contentBytes > MAX_CONTENT_BYTES) {
     throw pageError('页面内容超过 1 MB 限制', 'page_content_too_large');
   }
   const summary = String(input.summary ?? '').normalize('NFKC').trim().slice(0, MAX_SUMMARY_LENGTH);
-  const contentFormat = input.contentFormat === 'html' ? 'html' : 'markdown';
   const templateId =
     contentFormat === 'html'
       ? 'static-html'
@@ -579,6 +595,25 @@ export function createPageService(pool, options = {}) {
     return rows[0] ? pageResponse(rows[0]) : null;
   };
 
+  const findPageByRelativePath = async (userId, relativePath) => {
+    const normalized = normalizeWorkspaceRelativePath(relativePath);
+    if (!normalized) return null;
+    const [rows] = await pool.query(
+      `SELECT p.*, c.category_code, pv.version_no, pr.access_mode AS pub_access_mode, pr.public_url AS pub_public_url
+       FROM h5_page_records p
+       JOIN h5_space_categories c ON c.id = p.category_id AND c.user_id = p.user_id
+       JOIN h5_page_versions pv ON pv.id = p.current_version_id
+       LEFT JOIN h5_publish_records pr ON pr.id = p.current_publish_id AND pr.status = 'online'
+       WHERE p.user_id = ?
+         AND p.status <> 'deleted'
+         AND JSON_UNQUOTE(JSON_EXTRACT(pv.source_snapshot_json, '$.relative_path')) = ?
+       ORDER BY p.updated_at DESC, p.id DESC
+       LIMIT 1`,
+      [userId, normalized],
+    );
+    return rows[0] ? pageResponse(rows[0]) : null;
+  };
+
   const listPages = async (userId, filters = {}) => {
     const clauses = [`p.user_id = ?`, `p.status <> 'deleted'`];
     const params = [userId];
@@ -729,9 +764,9 @@ export function createPageService(pool, options = {}) {
     };
   };
 
-  const loadPageWorkspaceContext = async (userId, pageId) => {
+  const loadPageWorkspaceContext = async (userId, pageId, htmlContent = null) => {
     const [rows] = await pool.query(
-      `SELECT pv.source_snapshot_json
+      `SELECT pv.source_snapshot_json, p.title
        FROM h5_page_records p
        JOIN h5_page_versions pv ON pv.id = p.current_version_id
        WHERE p.id = ? AND p.user_id = ? AND p.status <> 'deleted'
@@ -744,8 +779,13 @@ export function createPageService(pool, options = {}) {
     } catch {
       snapshot = {};
     }
-    const workspaceHtmlRelativePath = snapshot.relative_path ?? 'public/index.html';
     const workspacePublishDir = h5Root ? resolvePublishDir(h5Root, { id: userId }) : null;
+    const workspaceHtmlRelativePath = inferWorkspaceHtmlRelativePath({
+      snapshotRelativePath: snapshot.relative_path,
+      pageTitle: rows[0]?.title,
+      htmlContent,
+      publishDir: workspacePublishDir,
+    });
     return {
       workspaceHtmlRelativePath,
       workspacePublishDir,
@@ -753,10 +793,22 @@ export function createPageService(pool, options = {}) {
     };
   };
 
+  const rewriteHtmlDownloadLinksForPage = async (userId, pageId, html) => {
+    const ctx = await loadPageWorkspaceContext(userId, pageId, html);
+    const { html: rewritten } = await prepareHtmlDownloadLinks(pool, userId, html, {
+      htmlRelativePath: ctx.workspaceHtmlRelativePath,
+      publishDir: ctx.workspacePublishDir,
+      publishKey: ctx.publishKey,
+      publicBaseUrl: '',
+      preferAssetDownload: true,
+    });
+    return rewritten;
+  };
+
   const finalizeHtmlPreview = async (userId, pageId, html) => {
     const shell = renderHtmlPreview(html);
     try {
-      const ctx = await loadPageWorkspaceContext(userId, pageId);
+      const ctx = await loadPageWorkspaceContext(userId, pageId, html);
       const { html: rewritten } = await prepareHtmlDownloadLinks(pool, userId, shell, {
         htmlRelativePath: ctx.workspaceHtmlRelativePath,
         publishDir: ctx.workspacePublishDir,
@@ -1334,10 +1386,12 @@ export function createPageService(pool, options = {}) {
     listPages,
     findPageBySourceAsset,
     findPageBySourceMessage,
+    findPageByRelativePath,
     getPage,
     getDeletePreview,
     deletePage,
     listVersions,
+    rewriteHtmlDownloadLinksForPage,
     renderPreview: async (userId, pageId) => {
       const page = await getPage(userId, pageId);
       const html =