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-html-download-links.mjs

@@ -34,6 +34,57 @@ export function resolveWorkspaceRelativeFilePath(htmlRelativePath, relativeRef)
   return path.posix.join(htmlDir, ref).replace(/\\/g, '/');
 }
 
+export function resolveSiblingDocxPath(htmlRelativePath) {
+  const htmlPath = String(htmlRelativePath ?? '').replace(/^\/+/, '');
+  if (!htmlPath.toLowerCase().endsWith('.html')) return null;
+  return htmlPath.replace(/\.html$/i, '.docx');
+}
+
+function resolveExistingSiblingDocxPath(htmlRelativePath, publishDir) {
+  const sibling = resolveSiblingDocxPath(htmlRelativePath);
+  if (!sibling || !publishDir) return null;
+  return workspaceFileExists(publishDir, sibling) ? sibling : null;
+}
+
+export function inferWorkspaceHtmlRelativePath({
+  snapshotRelativePath = null,
+  pageTitle = null,
+  htmlContent = null,
+  publishDir = null,
+} = {}) {
+  const fromSnapshot = String(snapshotRelativePath ?? '').trim();
+  if (fromSnapshot) {
+    const normalized = fromSnapshot.replace(/^\/+/, '');
+    if (normalized.toLowerCase().startsWith('public/')) return normalized;
+    if (normalized.toLowerCase().endsWith('.html')) return `public/${path.posix.basename(normalized)}`;
+    return normalized;
+  }
+
+  const publicDir = publishDir ? path.join(publishDir, 'public') : null;
+  if (!publicDir || !fs.existsSync(publicDir) || !htmlContent) {
+    return 'public/index.html';
+  }
+
+  const normalizedContent = String(htmlContent);
+  const title = String(pageTitle ?? '').trim();
+  for (const name of fs.readdirSync(publicDir)) {
+    if (!name.toLowerCase().endsWith('.html')) continue;
+    const absolutePath = path.join(publicDir, name);
+    try {
+      const diskContent = fs.readFileSync(absolutePath, 'utf8');
+      if (diskContent === normalizedContent) return `public/${name}`;
+      if (title) {
+        const titleMatch = diskContent.match(/<title[^>]*>([^<]+)<\/title>/i);
+        if (titleMatch?.[1]?.trim() === title) return `public/${name}`;
+      }
+    } catch {
+      // ignore unreadable files
+    }
+  }
+
+  return 'public/index.html';
+}
+
 export function buildWorkspaceDownloadLinkIndex(assets = []) {
   const byBasename = new Map();
   const byPath = new Map();
@@ -45,6 +96,8 @@ export function buildWorkspaceDownloadLinkIndex(assets = []) {
     byBasename.set(path.posix.basename(filename), id);
     if (filename.startsWith('public/')) {
       byPath.set(filename.slice('public/'.length), id);
+    } else if (!filename.includes('/')) {
+      byPath.set(`public/${filename}`, id);
     }
   }
   return { byBasename, byPath };
@@ -80,6 +133,20 @@ function workspaceFileExists(publishDir, workspaceRelativePath) {
   }
 }
 
+function collectDownloadWorkspaceCandidates(htmlRelativePath, relativeRef, publishDir) {
+  const workspacePath = resolveWorkspaceRelativeFilePath(htmlRelativePath, relativeRef);
+  const candidates = new Set([
+    workspacePath,
+    path.posix.join('public', path.posix.basename(workspacePath)),
+  ]);
+  const siblingDocx = resolveSiblingDocxPath(htmlRelativePath);
+  if (siblingDocx) {
+    candidates.add(siblingDocx);
+    candidates.add(path.posix.join('public', path.posix.basename(siblingDocx)));
+  }
+  return [...candidates];
+}
+
 export function resolveDownloadTargetUrl({
   relativeRef,
   htmlRelativePath = 'public/index.html',
@@ -90,27 +157,28 @@ export function resolveDownloadTargetUrl({
   preferAssetDownload = true,
 }) {
   const { suffix } = splitReferenceParts(relativeRef);
-  const workspacePath = resolveWorkspaceRelativeFilePath(htmlRelativePath, relativeRef);
-  const assetId = lookupAssetIdForWorkspacePath(linkIndex, workspacePath);
-  const publicCandidates = [
-    workspacePath,
-    path.posix.join('public', path.posix.basename(workspacePath)),
-  ];
+  const candidates = collectDownloadWorkspaceCandidates(htmlRelativePath, relativeRef, publishDir);
 
-  if (preferAssetDownload && assetId) {
-    return `${buildAssetDownloadUrl(assetId)}${suffix}`;
+  for (const candidate of candidates) {
+    const assetId = lookupAssetIdForWorkspacePath(linkIndex, candidate);
+    if (preferAssetDownload && assetId) {
+      return `${buildAssetDownloadUrl(assetId)}${suffix}`;
+    }
   }
 
   if (publishDir && publishKey) {
-    for (const candidate of publicCandidates) {
+    for (const candidate of candidates) {
       if (workspaceFileExists(publishDir, candidate)) {
         return `${buildPublicWorkspaceFileUrl(publicBaseUrl, publishKey, candidate)}${suffix}`;
       }
     }
   }
 
-  if (assetId) {
-    return `${buildAssetDownloadUrl(assetId)}${suffix}`;
+  for (const candidate of candidates) {
+    const assetId = lookupAssetIdForWorkspacePath(linkIndex, candidate);
+    if (assetId) {
+      return `${buildAssetDownloadUrl(assetId)}${suffix}`;
+    }
   }
 
   return null;
@@ -150,6 +218,8 @@ export async function prepareHtmlDownloadLinks(pool, userId, html, options = {})
 export const downloadLinkInternals = {
   isRelativeDownloadReference,
   resolveWorkspaceRelativeFilePath,
+  resolveSiblingDocxPath,
+  inferWorkspaceHtmlRelativePath,
   buildWorkspaceDownloadLinkIndex,
   lookupAssetIdForWorkspacePath,
   resolveDownloadTargetUrl,