diff --git a/scripts/backfill-plaza-cover-urls.mjs b/scripts/backfill-plaza-cover-urls.mjs
index fdaabda..117e4ed 100644
--- a/scripts/backfill-plaza-cover-urls.mjs
+++ b/scripts/backfill-plaza-cover-urls.mjs
@@ -3,10 +3,14 @@ import fs from 'node:fs';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { createDbPool } from '../db.mjs';
-import { resolvePlazaCoverUrl } from '../plaza-posts.mjs';
+import { resolvePlazaPublicationCoverUrl } from '../plaza-posts.mjs';
 
 const root = path.join(path.dirname(fileURLToPath(import.meta.url)), '..');
 const shouldWrite = process.argv.includes('--write');
+const batchPrefix = (() => {
+  const idx = process.argv.indexOf('--batch-prefix');
+  return idx >= 0 ? String(process.argv[idx + 1] ?? '').trim() : '';
+})();
 
 function loadEnvFile(filePath) {
   if (!fs.existsSync(filePath)) return;
@@ -25,12 +29,23 @@ loadEnvFile(path.join(root, '../../.env.local'));
 loadEnvFile(path.join(root, '.env'));
 
 const pool = createDbPool();
+const params = [];
+let batchFilter = '';
+if (batchPrefix) {
+  batchFilter = ' AND p.workspace_relative_path LIKE ?';
+  params.push(`public/${batchPrefix}%`);
+}
+
 const [rows] = await pool.query(
-  `SELECT pp.id, pp.title, pp.cover_url, pp.status, pr.public_url
+  `SELECT pp.id, pp.title, pp.cover_url, pp.user_slug, pp.status,
+          pr.public_url, pr.url_slug
    FROM plaza_posts pp
    JOIN h5_publish_records pr ON pr.id = pp.publication_id
+   JOIN h5_page_records p ON p.id = pr.page_id
    WHERE pp.status IN ('published', 'pending_review', 'rejected')
+   ${batchFilter}
    ORDER BY pp.published_at DESC, pp.id DESC`,
+  params,
 );
 
 const updates = rows
@@ -38,12 +53,19 @@ const updates = rows
     id: row.id,
     title: row.title,
     from: String(row.cover_url ?? ''),
-    to: resolvePlazaCoverUrl(row.cover_url, row.public_url),
+    to: resolvePlazaPublicationCoverUrl({
+      inputCoverUrl: row.cover_url,
+      publicUrl: row.public_url,
+      publicationUrlSlug: row.url_slug,
+      userSlug: row.user_slug,
+    }),
     publicUrl: String(row.public_url ?? ''),
   }))
   .filter((row) => row.to && row.from !== row.to);
 
-console.log(`${shouldWrite ? '写入模式' : 'Dry-run'}：共扫描 ${rows.length} 条帖子，命中 ${updates.length} 条待补封面。`);
+console.log(
+  `${shouldWrite ? '写入模式' : 'Dry-run'}：共扫描 ${rows.length} 条帖子，命中 ${updates.length} 条待补封面。`,
+);
 
 for (const row of updates.slice(0, 20)) {
   console.log(`- ${row.id} | ${row.title}`);
diff --git a/scripts/backfill-plaza-workspace-thumbnails.mjs b/scripts/backfill-plaza-workspace-thumbnails.mjs
new file mode 100644
index 0000000..84ee08d
--- /dev/null
+++ b/scripts/backfill-plaza-workspace-thumbnails.mjs
@@ -0,0 +1,109 @@
+#!/usr/bin/env node
+/**
+ * 强制重生成 Plaza 帖对应 workspace HTML 的缩略图（嵌入 hero 图）。
+ *
+ * Usage (103):
+ *   node scripts/backfill-plaza-workspace-thumbnails.mjs --dry-run
+ *   node scripts/backfill-plaza-workspace-thumbnails.mjs --apply
+ *   node scripts/backfill-plaza-workspace-thumbnails.mjs --apply --batch-prefix plaza-batch-
+ */
+import fs from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { createDbPool } from '../db.mjs';
+import { resolveMindSpaceUserPublishDir } from '../mindspace-runtime-config.mjs';
+import { ensureWorkspaceHtmlThumbnail } from '../mindspace-workspace-thumbnails.mjs';
+
+const root = path.join(path.dirname(fileURLToPath(import.meta.url)), '..');
+
+function loadEnvFile(filePath) {
+  if (!fs.existsSync(filePath)) return;
+  for (const line of fs.readFileSync(filePath, 'utf8').split('\n')) {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith('#')) continue;
+    const eq = trimmed.indexOf('=');
+    if (eq < 0) continue;
+    const key = trimmed.slice(0, eq).trim();
+    const value = trimmed.slice(eq + 1).trim();
+    if (!process.env[key]) process.env[key] = value;
+  }
+}
+
+loadEnvFile(path.join(root, '.env'));
+
+function parseArgs() {
+  const args = process.argv.slice(2);
+  let apply = false;
+  let batchPrefix = '';
+  for (let i = 0; i < args.length; i += 1) {
+    if (args[i] === '--apply') apply = true;
+    else if (args[i] === '--dry-run') apply = false;
+    else if (args[i] === '--batch-prefix' && args[i + 1]) batchPrefix = args[++i];
+  }
+  return { apply, batchPrefix };
+}
+
+const { apply, batchPrefix } = parseArgs();
+const h5Root = process.env.H5_ROOT ?? path.join(root, 'users');
+const pool = createDbPool();
+const params = ['published'];
+let batchFilter = '';
+if (batchPrefix) {
+  batchFilter = ' AND p.workspace_relative_path LIKE ?';
+  params.push(`public/${batchPrefix}%`);
+}
+
+const [rows] = await pool.query(
+  `SELECT pp.id AS post_id, pp.title, pp.user_id, p.workspace_relative_path
+   FROM plaza_posts pp
+   JOIN h5_publish_records pr ON pr.id = pp.publication_id
+   JOIN h5_page_records p ON p.id = pr.page_id
+   WHERE pp.status = ?
+     AND p.workspace_relative_path LIKE 'public/%.html'
+   ${batchFilter}
+   ORDER BY pp.published_at DESC, pp.id DESC`,
+  params,
+);
+
+console.log(`${apply ? '写入模式' : 'Dry-run'}：命中 ${rows.length} 条 workspace HTML 帖子。`);
+
+let ok = 0;
+let skipped = 0;
+let failed = 0;
+
+for (const row of rows) {
+  const relativePath = String(row.workspace_relative_path ?? '').trim();
+  if (!relativePath) {
+    skipped += 1;
+    continue;
+  }
+  const publishDir = resolveMindSpaceUserPublishDir(h5Root, { id: row.user_id });
+  const htmlPath = path.join(publishDir, relativePath);
+  if (!fs.existsSync(htmlPath)) {
+    console.warn(`- SKIP ${row.post_id} | ${row.title} | missing ${relativePath}`);
+    skipped += 1;
+    continue;
+  }
+  console.log(`- ${row.post_id} | ${row.title} | ${relativePath}`);
+  if (!apply) continue;
+  try {
+    await ensureWorkspaceHtmlThumbnail(publishDir, relativePath, null, {
+      title: row.title,
+      force: true,
+    });
+    ok += 1;
+  } catch (error) {
+    failed += 1;
+    console.warn(
+      `  FAIL ${row.post_id}:`,
+      error instanceof Error ? error.message : error,
+    );
+  }
+}
+
+console.log(`完成：regenerated=${ok} skipped=${skipped} failed=${failed}`);
+if (!apply) {
+  console.log('Dry-run 未写入；正式执行: node scripts/backfill-plaza-workspace-thumbnails.mjs --apply');
+}
+
+await pool.end();