diff --git a/.env.example b/.env.example
index 9c6f52b..435f18d 100644
--- a/.env.example
+++ b/.env.example
@@ -167,10 +167,11 @@ VITE_TKMIND_WORKING_DIR=/Users/john/PycharmProjects/tkmind
 # 历史列表每次展示/加载条数（默认 25，与 desktop 一致）
 # VITE_SESSION_PAGE_SIZE=25
 
-# Plaza 发现广场（本机为主，105 已停用）
-# PLAZA_AUTO_APPROVE=true
+# Plaza 发现广场（独立域名 plaza.tkmind.cn；Portal 前端链接见 VITE_PLAZA_BASE）
+# PLAZA_PUBLIC_BASE=https://plaza.tkmind.cn
+# 本地 dev 脚本会自动注入 VITE_PLAZA_BASE=http://127.0.0.1:3001；勿把该值留进生产构建用的 .env
 # VITE_PLAZA_BASE=http://127.0.0.1:3001
-# 文档：docs/plaza-local.md  |  本地：http://127.0.0.1:3001/plaza
+# 文档：docs/plaza-local.md  |  本地：http://127.0.0.1:3001/plaza  |  生产：https://plaza.tkmind.cn/plaza
 
 # MindSpace（默认启用；子功能需按需开启）
 # MINDSPACE_ENABLED=false
diff --git a/AGENTS.md b/AGENTS.md
index c319690..1a4a92c 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -24,6 +24,7 @@ bash scripts/check-release-ready.sh
 | 主题 | 文档 |
 |------|------|
 | MindSpace 公开页 `edit_file` 落盘 + 聊天 Finish 不丢消息 | [docs/regression-guards/mindspace-publish-and-chat-finish.md](docs/regression-guards/mindspace-publish-and-chat-finish.md) |
+| MindSpace remote 页面 sync + storage 缺失缩略图 fallback | [docs/regression-guards/mindspace-remote-page-sync-and-thumbnail.md](docs/regression-guards/mindspace-remote-page-sync-and-thumbnail.md) |
 
 索引：[docs/regression-guards/README.md](docs/regression-guards/README.md)
 
@@ -32,6 +33,7 @@ bash scripts/check-release-ready.sh
 ```bash
 npm run verify:mindspace-publish-guards
 npm run verify:mindspace-publish-guards:full
+npm run verify:mindspace-page-sync-guards
 ```
 
 发版脚本（`scripts/release-portal-runtime-prod.sh`）在未 `--skip-tests` 时也会执行相关 verify。
@@ -43,6 +45,8 @@ npm run verify:mindspace-publish-guards:full
 - `conversation-display.mjs` + `src/utils/message.ts` - 用户消息不得展示 routing/skill 内部前缀
 - `src/hooks/useTKMindChat.ts` - `syncSessionMessages` merge + 重试
 - `server.mjs` - session snapshot 需 `hint_mc` 且 `hint_ua` 才走缓存
+- `mindspace-pages.mjs` - storage 缺失时 HTML 页回退读 workspace `relative_path`
+- `mindspace-page-sync-service.mjs` + `server.mjs` - remote 模式也必须 sync public HTML
 
 代码内搜索 `REGRESSION GUARD` 可定位所有内联说明。
 
@@ -52,6 +56,11 @@ npm run verify:mindspace-publish-guards:full
 - `chat-finish-sync.test.mjs`
 - `conversation-display.test.mjs`
 
+### MindSpace page sync + thumbnail
+
+- `mindspace-page-sync-service.test.mjs`
+- `mindspace-pages.test.mjs`
+
 ## Cursor 专用规则（其它工具请读上文文档）
 
 Cursor 额外加载：`.cursor/rules/mindspace-publish-chat-finish-guards.mdc`  
diff --git a/docs/plaza-local.md b/docs/plaza-local.md
index 57e81e8..fd2002e 100644
--- a/docs/plaza-local.md
+++ b/docs/plaza-local.md
@@ -104,6 +104,30 @@ pnpm setup:plaza-tunnel
 | `H5_PORT` | 8081 | Portal / API 端口 |
 | `PLAZA_LOCAL_HOST` | plaza.tkmind.cn | 本地域名 |
 | `PLAZA_PUBLIC_BASE` | https://plaza.tkmind.cn | 公开 URL 前缀 |
+| `VITE_PLAZA_BASE` | （见下） | Portal 前端「逛 Plaza」链接；**编译期**写入 dist |
+
+### Portal「逛 Plaza」链接（MindSpace / 发布成功页）
+
+Plaza 是独立域名 `plaza.tkmind.cn`，与 Portal `m.tkmind.cn` 不同。前端通过 `src/utils/publicUrl.ts` → `public-site-bases.mjs` 解析：
+
+| 环境 | 期望链接 |
+|------|----------|
+| 本机 `127.0.0.1` / `localhost` | `http://127.0.0.1:3001/plaza` |
+| 生产 `m.tkmind.cn` | `https://plaza.tkmind.cn/plaza` |
+
+**为何生产曾出现 127？** `VITE_*` 在 `vite build` 时写入 bundle。若本机 `.env` 含 `VITE_PLAZA_BASE=http://127.0.0.1:3001`，未覆盖就直接打生产包，会把 127 带进 `m.tkmind.cn`。
+
+**彻底修复（三层）：**
+
+1. **运行时守卫**：在 `m.tkmind.cn` 等公网 host 上，即使 bundle 内是 loopback，也强制用 `https://plaza.tkmind.cn`（见 `public-site-bases.mjs`）。
+2. **构建默认值**：`scripts/build-portal-runtime.mjs` 在未显式设置时注入 `VITE_PLAZA_BASE=https://plaza.tkmind.cn`。
+3. **勿在生产构建用本地 .env**：发 Portal runtime 前确认 `npm run build` / `build-portal-runtime.mjs` 未读取带 127 的 `VITE_PLAZA_BASE`。
+
+验证：
+
+```bash
+node --test public-site-bases.test.mjs
+```
 
 ## 已弃用
 
diff --git a/docs/regression-guards/README.md b/docs/regression-guards/README.md
index 2be27e2..5f156eb 100644
--- a/docs/regression-guards/README.md
+++ b/docs/regression-guards/README.md
@@ -7,6 +7,7 @@
 | 文档 | 保护内容 |
 |------|----------|
 | [mindspace-publish-and-chat-finish.md](./mindspace-publish-and-chat-finish.md) | ① `edit_file` 覆盖 `public/*.html` ② Finish 后聊天不清空、不暴露 agent 内部前缀 |
+| [mindspace-remote-page-sync-and-thumbnail.md](./mindspace-remote-page-sync-and-thumbnail.md) | ① remote 模式 public HTML 入库 sync ② storage 缺失时缩略图/读页回退 workspace HTML |
 
 ## 自动化
 
diff --git a/docs/regression-guards/mindspace-remote-page-sync-and-thumbnail.md b/docs/regression-guards/mindspace-remote-page-sync-and-thumbnail.md
new file mode 100644
index 0000000..2320b81
--- /dev/null
+++ b/docs/regression-guards/mindspace-remote-page-sync-and-thumbnail.md
@@ -0,0 +1,100 @@
+# MindSpace Remote 页面同步与缩略图回归守卫
+
+日期：2026-07-05
+
+## 事故症状
+
+1. **缩略图 500**：`GET /api/mindspace/v1/pages/:pageId/thumbnail` 返回 500；日志/storage 为 `ENOENT`，但 `MindSpace/<userId>/public/*.html` 仍存在。
+2. **页面列表缺新生成页**：103 生产 `MINDSPACE_SERVER_ADAPTER=remote` 时，Agent 新生成的 `public/*.html` 不出现在「最近页面 / 全部页面」。
+3. **误判**：容易把缺页当成「MindSpace 路径解析错误」或「改回 local adapter 就能修缩略图」——两者根因不同。
+
+## 根因
+
+### 缩略图 500
+
+- `h5_page_records` / `h5_asset_versions.storage_key` 指向 `data/mindspace/users/.../*.md`。
+- 磁盘上该 storage 文件可能已丢失或未写入（历史 sync、清理、quota、迁移）。
+- 页面 snapshot 仍保留 `relative_path: public/index.html`，工作区 HTML 是真实内容来源。
+- `loadPageThumbnailContext` / `getPage` 若**只读 storage**，会在 remote 8082 上直接抛错 → Portal 返回 500。
+
+### Remote 下缺页
+
+- Portal `GET /mindspace/v1/pages` 会调用 `syncUserGeneratedPages()`，将 `public/*.html` 入库。
+- 曾存在 `if (adapterKind === 'remote') return;`，导致 **8082 独立部署后 sync 永不执行**。
+- 测试环境多为 `local`，sync 正常 → 生产/测试行为不一致。
+
+## 必须保留的行为
+
+### 1. Workspace HTML fallback（读内容）
+
+在 `mindspace-pages.mjs` 中，读取页面 content / 缩略图 HTML 时：
+
+1. 优先读 `storage_key` 对应文件；
+2. 若 `ENOENT` 且 `page_type === 'html'` 且 snapshot 有 `relative_path` → 回退读 `resolvePublishDir(h5Root, userId)` 下对应 HTML；
+3. `getPage` 与 `renderThumbnail` **共用** `readPageContentWithWorkspaceFallback`，禁止只修一处。
+
+### 2. Remote 也执行 page sync
+
+1. 抽出 `mindspace-page-sync-service.mjs` → `pageSyncService.syncUserGeneratedPages(userId)`；
+2. 写入 `mindspace-server-adapter-contract.mjs`：`pageSyncService` binding；
+3. **Local**：8082 / Portal 内直接跑 `syncGeneratedPagesFromPublicAssets`；
+4. **Remote**：Portal 通过 RPC 调 8082 的 `pageSyncService.syncUserGeneratedPages`；
+5. **`server.mjs` 禁止**在 remote 模式 early-return 跳过 sync。
+
+触发点（保持不变）：
+
+- `GET /mindspace/v1/pages` 列表前
+- 聊天 Finish 后（`onAfterFinish`）
+
+### 3. 103 拓扑约束
+
+- Portal：`8081`，`MINDSPACE_SERVER_ADAPTER=remote`
+- MindSpace Service：`8082`，跑 **local adapter**（含 pageSyncService + storage + h5Root）
+- 用户 HTML：`/Users/john/Project/Memind/MindSpace/<userId>/public/`
+- Storage：`data/mindspace/users/<userId>/...`
+
+**禁止**用「改回 Portal local adapter」作为生产长期方案；只可用于本地对比验证。
+
+## 排查入口
+
+```bash
+# 1. 页面 DB 记录 vs storage vs workspace
+mysql ... # h5_page_records + h5_page_versions.source_snapshot_json + h5_asset_versions.storage_key
+
+# 2. storage 是否存在
+ls -la data/mindspace/users/<userId>/pages/<assetId>/versions/
+
+# 3. workspace HTML 是否存在
+ls -la MindSpace/<userId>/public/
+
+# 4. 8082 健康与 adapter
+curl -s http://127.0.0.1:8082/health
+
+# 5. 缩略图 RPC（需登录态；或直接在 8082 侧调 pageService.renderThumbnail）
+curl -I 'https://m.tkmind.cn/api/mindspace/v1/pages/<pageId>/thumbnail'
+```
+
+## 改相关文件前必跑
+
+```bash
+npm run verify:mindspace-page-sync-guards
+node --test mindspace-page-sync-service.test.mjs mindspace-pages.test.mjs
+```
+
+## Checklist（发 103 前）
+
+- [ ] `mindspace-pages.mjs` 含 workspace fallback
+- [ ] `pageSyncService` 在 contract + local runtime + remote proxy 中齐全
+- [ ] `server.mjs` 无 remote sync skip
+- [ ] **8082 与 Portal 均发布**（8082 承载 renderThumbnail + sync）
+- [ ] 用真实 pageId 验证 thumbnail 200 + 列表含新页
+
+## 相关单测
+
+- `mindspace-page-sync-service.test.mjs`
+- `mindspace-pages.test.mjs`（storage 缺失时 thumbnail / getPage fallback）
+- `mindspace-page-sync.test.mjs`（public dir → DB）
+
+## 代码内标记
+
+搜索 `REGRESSION GUARD: mindspace-page-sync-thumbnail` 定位内联说明。
diff --git a/mindspace-local-runtime-services.mjs b/mindspace-local-runtime-services.mjs
index ef9fa03..6e97efc 100644
--- a/mindspace-local-runtime-services.mjs
+++ b/mindspace-local-runtime-services.mjs
@@ -6,6 +6,7 @@ import { createAgentJobService } from './mindspace-agent-jobs.mjs';
 import { createAssetAgentService } from './mindspace-asset-agent.mjs';
 import { createPageLiveEditService } from './mindspace-page-live-edit.mjs';
 import { createPageService } from './mindspace-pages.mjs';
+import { createPageSyncService } from './mindspace-page-sync-service.mjs';
 import { createPublicationService } from './mindspace-publications.mjs';
 import { createMindSpaceLocalRuntime } from './mindspace-runtime-config.mjs';
 
@@ -19,6 +20,7 @@ export function createMindSpaceLocalRuntimeServices({
   conversationPackageBackfill,
   conversationPackagePublicHtmlHydrator,
   logger = console,
+  syncWorkspaceAssets = null,
 } = {}) {
   let conversationPackageRegistry = null;
   const runtime = createMindSpaceLocalRuntime({
@@ -51,6 +53,14 @@ export function createMindSpaceLocalRuntimeServices({
     storageRoot: runtime.storageRoot,
     conversationPackageRegistry,
   });
+  const pageSyncService = createPageSyncService({
+    pool,
+    pageService,
+    assetService,
+    h5Root,
+    syncWorkspaceAssets,
+    logger,
+  });
   const publicationService = createPublicationService(pool, {
     h5Root,
     storageRoot: runtime.storageRoot,
@@ -80,6 +90,7 @@ export function createMindSpaceLocalRuntimeServices({
     conversationPackageRegistry,
     assetService,
     pageService,
+    pageSyncService,
     publicationService,
     cleanupService,
     agentJobService,
diff --git a/mindspace-local-runtime-services.test.mjs b/mindspace-local-runtime-services.test.mjs
index 7043309..b807dfb 100644
--- a/mindspace-local-runtime-services.test.mjs
+++ b/mindspace-local-runtime-services.test.mjs
@@ -30,6 +30,7 @@ test('createMindSpaceLocalRuntimeServices assembles local runtime-backed service
   assert.ok(services.conversationPackageRegistry);
   assert.ok(services.assetService);
   assert.ok(services.pageService);
+  assert.ok(services.pageSyncService);
   assert.ok(services.publicationService);
   assert.ok(services.cleanupService);
   assert.ok(services.agentJobService);
diff --git a/mindspace-local-server-adapter.mjs b/mindspace-local-server-adapter.mjs
index da8a237..34cd2e8 100644
--- a/mindspace-local-server-adapter.mjs
+++ b/mindspace-local-server-adapter.mjs
@@ -13,8 +13,10 @@ export function createMindSpaceLocalServerAdapter({
   registerPublicHtmlArtifactsForConversation,
   logger = console,
   setIntervalFn = setInterval,
+  syncWorkspaceAssetsEnabled = true,
 } = {}) {
-  const services = createMindSpaceLocalRuntimeServices({
+  let services;
+  services = createMindSpaceLocalRuntimeServices({
     pool,
     h5Root,
     env,
@@ -36,6 +38,10 @@ export function createMindSpaceLocalServerAdapter({
       registerPublicHtmlArtifactsForConversation,
     }),
     logger,
+    syncWorkspaceAssets: syncWorkspaceAssetsEnabled
+      ? (targetUserId, options) =>
+          services?.assetService?.syncWorkspaceAssets?.(targetUserId, options)
+      : null,
   });
 
   return {
diff --git a/mindspace-page-sync-service.mjs b/mindspace-page-sync-service.mjs
new file mode 100644
index 0000000..3f3b6b3
--- /dev/null
+++ b/mindspace-page-sync-service.mjs
@@ -0,0 +1,44 @@
+import { syncGeneratedPagesFromPublicAssets } from './mindspace-page-sync.mjs';
+import { resolvePublishDir } from './user-publish.mjs';
+
+export function createPageSyncService({
+  pool,
+  pageService,
+  assetService,
+  h5Root,
+  syncWorkspaceAssets = null,
+  logger = console,
+} = {}) {
+  const syncInFlight = new Map();
+
+  async function syncUserGeneratedPages(userId) {
+    if (!pool || !pageService || !userId) {
+      return { created: 0, skipped: 0, updated: 0 };
+    }
+
+    let inFlight = syncInFlight.get(userId);
+    if (!inFlight) {
+      inFlight = syncGeneratedPagesFromPublicAssets({
+        pool,
+        pageService,
+        assetService,
+        userId,
+        publishDir: h5Root ? resolvePublishDir(h5Root, { id: userId }) : null,
+        syncWorkspaceAssets,
+      })
+        .catch((error) => {
+          logger.warn?.('[MindSpace] page sync failed:', error?.message ?? error);
+          return { created: 0, skipped: 0, updated: 0 };
+        })
+        .finally(() => {
+          if (syncInFlight.get(userId) === inFlight) {
+            syncInFlight.delete(userId);
+          }
+        });
+      syncInFlight.set(userId, inFlight);
+    }
+    return inFlight;
+  }
+
+  return { syncUserGeneratedPages };
+}
diff --git a/mindspace-page-sync-service.test.mjs b/mindspace-page-sync-service.test.mjs
new file mode 100644
index 0000000..96c7c75
--- /dev/null
+++ b/mindspace-page-sync-service.test.mjs
@@ -0,0 +1,88 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+import test from 'node:test';
+import { createPageSyncService } from './mindspace-page-sync-service.mjs';
+import { PUBLISH_ROOT_DIR } from './user-publish.mjs';
+
+test('syncUserGeneratedPages registers html files from publish public dir', async () => {
+  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), 'mindspace-page-sync-service-'));
+  const h5Root = tmp;
+  const userId = 'user-1';
+  const publishDir = path.join(h5Root, PUBLISH_ROOT_DIR, userId);
+  const html =
+    '<!doctype html><html><head><title>Sync Demo</title></head><body><h1>Hi</h1></body></html>';
+  await fs.mkdir(path.join(publishDir, 'public'), { recursive: true });
+  await fs.writeFile(path.join(publishDir, 'public/index.html'), html);
+
+  const calls = [];
+  const pageService = {
+    createFromChat: async (_userId, input, source) => {
+      calls.push({ input, source });
+      return { id: 'page-1' };
+    },
+    updatePage: async () => assert.fail('should create, not update'),
+  };
+  const pool = {
+    query: async (sql) => {
+      if (String(sql).includes('FROM h5_page_records')) return [[]];
+      return [[]];
+    },
+  };
+
+  const pageSyncService = createPageSyncService({
+    pool,
+    pageService,
+    assetService: null,
+    h5Root,
+  });
+  const result = await pageSyncService.syncUserGeneratedPages(userId);
+
+  assert.equal(result.created, 1);
+  assert.equal(calls.length, 1);
+  assert.equal(calls[0].input.title, 'Sync Demo');
+  assert.equal(calls[0].source.snapshot.relative_path, 'public/index.html');
+});
+
+test('syncUserGeneratedPages deduplicates concurrent sync for the same user', async () => {
+  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), 'mindspace-page-sync-dedupe-'));
+  const h5Root = tmp;
+  const userId = 'user-1';
+  const publishDir = path.join(h5Root, PUBLISH_ROOT_DIR, userId);
+  await fs.mkdir(path.join(publishDir, 'public'), { recursive: true });
+  await fs.writeFile(
+    path.join(publishDir, 'public/index.html'),
+    '<html><head><title>Dedupe</title></head><body>Hi</body></html>',
+  );
+
+  let active = 0;
+  let maxActive = 0;
+  const pageService = {
+    createFromChat: async () => {
+      active += 1;
+      maxActive = Math.max(maxActive, active);
+      await new Promise((resolve) => setTimeout(resolve, 20));
+      active -= 1;
+      return { id: 'page-1' };
+    },
+  };
+  const pool = {
+    query: async (sql) => {
+      if (String(sql).includes('FROM h5_page_records')) return [[]];
+      return [[]];
+    },
+  };
+  const pageSyncService = createPageSyncService({
+    pool,
+    pageService,
+    h5Root,
+  });
+
+  await Promise.all([
+    pageSyncService.syncUserGeneratedPages(userId),
+    pageSyncService.syncUserGeneratedPages(userId),
+  ]);
+
+  assert.equal(maxActive, 1);
+});
diff --git a/mindspace-pages.mjs b/mindspace-pages.mjs
index 4d26ebd..3c2fc53 100644
--- a/mindspace-pages.mjs
+++ b/mindspace-pages.mjs
@@ -309,6 +309,45 @@ export function createPageService(pool, options = {}) {
     throw lastError ?? Object.assign(new Error('存储文件不存在'), { code: 'storage_not_found' });
   };
 
+  // REGRESSION GUARD: mindspace-page-sync-thumbnail — storage ENOENT 时回退读 workspace HTML
+  const readPageContentWithWorkspaceFallback = async ({
+    userId,
+    storageKey,
+    sourceSnapshotJson,
+    pageType,
+  }) => {
+    let snapshot = {};
+    try {
+      snapshot = parseJsonColumn(sourceSnapshotJson);
+    } catch {
+      snapshot = {};
+    }
+    const workspaceHtmlRelativePath =
+      pageType === 'html' ? snapshot.relative_path ?? null : null;
+    const workspacePublishDir = workspaceHtmlRelativePath
+      ? await resolveWorkspacePublishDir(userId)
+      : null;
+
+    try {
+      const storagePath = await resolveReadableStoragePath(storageKey);
+      return await fs.readFile(storagePath, 'utf8');
+    } catch (error) {
+      const storageMissing = error?.code === 'ENOENT' || error?.code === 'storage_not_found';
+      if (!storageMissing || !workspacePublishDir || !workspaceHtmlRelativePath) {
+        throw error;
+      }
+      const workspaceHtmlPath = path.join(workspacePublishDir, workspaceHtmlRelativePath);
+      try {
+        return await fs.readFile(workspaceHtmlPath, 'utf8');
+      } catch (workspaceError) {
+        if (workspaceError?.code === 'ENOENT') {
+          throw error;
+        }
+        throw workspaceError;
+      }
+    }
+  };
+
   const writeVersionContent = async (userId, assetId, versionId, content) => {
     const storageKey = path.posix.join(
       'users',
@@ -668,7 +707,7 @@ export function createPageService(pool, options = {}) {
 
   async function getPage(userId, pageId) {
     const [rows] = await pool.query(
-      `SELECT p.*, c.category_code, pv.version_no, av.storage_key
+      `SELECT p.*, c.category_code, pv.version_no, av.storage_key, pv.source_snapshot_json
        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
@@ -679,8 +718,12 @@ export function createPageService(pool, options = {}) {
     );
     const row = rows[0];
     if (!row) throw pageError('页面不存在', 'page_not_found');
-    const storagePath = await resolveReadableStoragePath(row.storage_key);
-    const content = await fs.readFile(storagePath, 'utf8');
+    const content = await readPageContentWithWorkspaceFallback({
+      userId,
+      storageKey: row.storage_key,
+      sourceSnapshotJson: row.source_snapshot_json,
+      pageType: row.page_type,
+    });
     return pageResponse({ ...row, content });
   }
 
@@ -1265,8 +1308,12 @@ export function createPageService(pool, options = {}) {
     if (row.page_type !== 'html') {
       throw pageError('该页面不支持缩略图', 'thumbnail_not_supported');
     }
-    const storagePath = await resolveReadableStoragePath(row.storage_key);
-    const content = await fs.readFile(storagePath, 'utf8');
+    const content = await readPageContentWithWorkspaceFallback({
+      userId,
+      storageKey: row.storage_key,
+      sourceSnapshotJson: row.source_snapshot_json,
+      pageType: row.page_type,
+    });
     let snapshot = {};
     try {
       snapshot = parseJsonColumn(row.source_snapshot_json);
diff --git a/mindspace-pages.test.mjs b/mindspace-pages.test.mjs
index 1d64f20..603316d 100644
--- a/mindspace-pages.test.mjs
+++ b/mindspace-pages.test.mjs
@@ -1,6 +1,10 @@
 import assert from 'node:assert/strict';
+import fs from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
 import test from 'node:test';
-import { pageInternals, normalizeWorkspaceRelativePath } from './mindspace-pages.mjs';
+import { createPageService, pageInternals, normalizeWorkspaceRelativePath } from './mindspace-pages.mjs';
+import { PUBLISH_ROOT_DIR } from './user-publish.mjs';
 
 test('parseJsonColumn accepts mysql json objects and strings', () => {
   const objectValue = { relative_path: 'public/demo.html', auto_synced: true };
@@ -208,3 +212,86 @@ test('registerPageArtifactForConversation skips missing registry or session safe
     null,
   );
 });
+
+test('renderThumbnail falls back to workspace html when storage asset is missing', async () => {
+  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), 'mindspace-thumb-'));
+  const storageRoot = path.join(tmp, 'storage');
+  const h5Root = tmp;
+  const userId = 'user-1';
+  const pageId = 'page-1';
+  const publishDir = path.join(h5Root, PUBLISH_ROOT_DIR, userId);
+  const html =
+    '<!doctype html><html><head><title>Demo</title></head><body><h1>Hi</h1></body></html>';
+  await fs.mkdir(path.join(publishDir, 'public'), { recursive: true });
+  await fs.writeFile(path.join(publishDir, 'public/index.html'), html);
+
+  const pool = {
+    query: async (sql) => {
+      if (String(sql).includes('FROM h5_page_records')) {
+        return [[{
+          title: 'Demo',
+          summary: '',
+          page_type: 'html',
+          version_no: 1,
+          storage_key: `users/${userId}/pages/missing/versions/v1.md`,
+          source_snapshot_json: { relative_path: 'public/index.html' },
+        }]];
+      }
+      if (String(sql).includes('FROM h5_users')) {
+        return [[{ username: 'demo' }]];
+      }
+      return [[]];
+    },
+  };
+
+  const pageService = createPageService(pool, { storageRoot, h5Root });
+  const svg = await pageService.renderThumbnail(userId, pageId);
+  assert.match(svg, /<svg/i);
+  assert.match(svg, /Demo/);
+});
+
+test('getPage falls back to workspace html when storage asset is missing', async () => {
+  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), 'mindspace-get-page-'));
+  const storageRoot = path.join(tmp, 'storage');
+  const h5Root = tmp;
+  const userId = 'user-1';
+  const pageId = 'page-1';
+  const publishDir = path.join(h5Root, PUBLISH_ROOT_DIR, userId);
+  const html =
+    '<!doctype html><html><head><title>Page Demo</title></head><body><h1>Body</h1></body></html>';
+  await fs.mkdir(path.join(publishDir, 'public'), { recursive: true });
+  await fs.writeFile(path.join(publishDir, 'public/index.html'), html);
+
+  const pool = {
+    query: async (sql) => {
+      if (String(sql).includes('FROM h5_page_records')) {
+        return [[{
+          id: pageId,
+          user_id: userId,
+          title: 'Page Demo',
+          summary: '',
+          page_type: 'html',
+          template_id: 'static-html',
+          current_version_id: 'version-1',
+          status: 'draft',
+          visibility: 'private',
+          category_code: 'draft',
+          version_no: 1,
+          storage_key: `users/${userId}/pages/missing/versions/v1.md`,
+          source_snapshot_json: { relative_path: 'public/index.html' },
+          created_at: 1,
+          updated_at: 1,
+        }]];
+      }
+      if (String(sql).includes('FROM h5_users')) {
+        return [[{ username: 'demo' }]];
+      }
+      return [[]];
+    },
+  };
+
+  const pageService = createPageService(pool, { storageRoot, h5Root });
+  const page = await pageService.getPage(userId, pageId);
+  assert.equal(page.title, 'Page Demo');
+  assert.match(page.content, /<h1>Body<\/h1>/);
+});
diff --git a/mindspace-server-adapter-contract.mjs b/mindspace-server-adapter-contract.mjs
index da8e2bd..d3783ff 100644
--- a/mindspace-server-adapter-contract.mjs
+++ b/mindspace-server-adapter-contract.mjs
@@ -44,6 +44,7 @@ export const MINDSPACE_SERVER_ADAPTER_BINDINGS = Object.freeze({
     'updatePage',
     'uploadThumbnail',
   ]),
+  pageSyncService: Object.freeze(['syncUserGeneratedPages']),
   pageLiveEditService: Object.freeze(['applyAgentPatch', 'bindSession', 'getRevisionSnapshot']),
   assetAgentService: Object.freeze(['applyAgentDelete']),
   publicationService: Object.freeze([
diff --git a/package.json b/package.json
index bcf1295..1008ee8 100644
--- a/package.json
+++ b/package.json
@@ -51,12 +51,13 @@
     "smoke:memory-v2-qdrant": "node scripts/smoke-memory-v2-qdrant.mjs",
     "smoke:memory-v2-external": "node scripts/smoke-memory-v2-external.mjs",
     "mock:memory-v2-services": "node scripts/mock-memory-v2-services.mjs",
-    "test": "node --test auth.test.mjs asr-proxy.test.mjs billing.test.mjs billing-recharge.test.mjs wechat-pay.test.mjs wechat-oauth.test.mjs wechat-mp.test.mjs schedule-intent.test.mjs schedule-reminder-worker.test.mjs capabilities.test.mjs policies.test.mjs chat-skills.test.mjs chat-intent-router.test.mjs chat-finish-sync.test.mjs conversation-display.test.mjs user-publish.test.mjs user-memory-profile.test.mjs skills-registry.test.mjs agent-run-gateway.test.mjs agent-run-routes.test.mjs admin-routes.test.mjs direct-chat-service.test.mjs tool-gateway.test.mjs mindspace.test.mjs mindspace-scan.test.mjs mindspace-assets.test.mjs mindspace-local-runtime-services.test.mjs mindspace-local-server-adapter.test.mjs mindspace-public-asset-token.test.mjs mindspace-remote-server-adapter.test.mjs mindspace-server-adapter.test.mjs mindspace-pages.test.mjs mindspace-html-download-links.test.mjs mindspace-page-purge.test.mjs mindspace-public-delivery.test.mjs mindspace-public-page-context.test.mjs mindspace-public-route.test.mjs mindspace-publications.test.mjs mindspace-public-links.test.mjs mindspace-chat-save.test.mjs mindspace-chat-docx-package.test.mjs mindspace-public-finish-sync.test.mjs mindspace-chat-context.test.mjs mindspace-canonical-url.test.mjs mindspace-conversation-package.test.mjs mindspace-conversation-package-backfill.test.mjs mindspace-conversation-package-public-html.test.mjs mindspace-conversation-package-verify.test.mjs mindspace-conversation-package-registry.test.mjs mindspace-conversation-package-routes.test.mjs mindspace-conversation-package-store.test.mjs mindspace-conversation-schema.test.mjs mindspace-runtime-config.test.mjs mindspace-service.test.mjs mindspace-storage-adapter.test.mjs mindspace-content-scan.test.mjs mindspace-html-localize.test.mjs mindspace-visual-editor.test.mjs mindspace-cleanup.test.mjs mindspace-thumbnails.test.mjs mindspace-workspace-thumbnails.test.mjs mindspace-workspace-sync.test.mjs mindspace-asset-preview.test.mjs mindspace-agent-jobs.test.mjs mindspace-agent-runner.test.mjs mindspace-sandbox-mcp.test.mjs message-stream.test.mjs mindspace-service/mindspace-rpc-server.test.mjs plaza-posts.test.mjs plaza-interactions.test.mjs plaza-algorithm.test.mjs plaza-seo.test.mjs plaza-ops.test.mjs user-auth.test.mjs llm-providers.test.mjs admin-guard.test.mjs user-feedback.test.mjs memory-v2.test.mjs memory-v2-admin-config.test.mjs memory-v2-adapter-scaffold.test.mjs memory-v2-backend-contract.test.mjs memory-v2-health.test.mjs memory-v2-runtime.test.mjs memory-v2-plugin-backends.test.mjs memory-v2-pgvector.test.mjs memory-v2-pgvector-schema.test.mjs memory-v2-pgvector-backfill.test.mjs memory-v2-pgvector-smoke.test.mjs memory-v2-qdrant.test.mjs memory-v2-weaviate.test.mjs memory-v2-mem0.test.mjs memory-v2-letta.test.mjs memory-v2-external-adapters.test.mjs scripts/embed-memory-v2-local-hash.test.mjs scripts/check-memory-v2-app-canary.test.mjs scripts/check-memory-v2-config-gaps.test.mjs scripts/check-memory-v2-contracts.test.mjs scripts/check-memory-v2-health.test.mjs scripts/check-memory-v2-session-flow.test.mjs scripts/check-memory-v2-stack.test.mjs scripts/setup-memory-v2-pgvector-schema.test.mjs scripts/backfill-memory-v2-pgvector.test.mjs scripts/scaffold-memory-v2-backend.test.mjs scripts/smoke-memory-v2-pgvector.test.mjs scripts/smoke-memory-v2-qdrant.test.mjs scripts/smoke-memory-v2-external.test.mjs scripts/mock-memory-v2-services.test.mjs",
+    "test": "node --test auth.test.mjs asr-proxy.test.mjs billing.test.mjs billing-recharge.test.mjs wechat-pay.test.mjs wechat-oauth.test.mjs wechat-mp.test.mjs schedule-intent.test.mjs schedule-reminder-worker.test.mjs capabilities.test.mjs policies.test.mjs chat-skills.test.mjs chat-intent-router.test.mjs chat-finish-sync.test.mjs conversation-display.test.mjs user-publish.test.mjs user-memory-profile.test.mjs skills-registry.test.mjs agent-run-gateway.test.mjs agent-run-routes.test.mjs admin-routes.test.mjs direct-chat-service.test.mjs tool-gateway.test.mjs mindspace.test.mjs mindspace-scan.test.mjs mindspace-assets.test.mjs mindspace-local-runtime-services.test.mjs mindspace-local-server-adapter.test.mjs mindspace-public-asset-token.test.mjs mindspace-remote-server-adapter.test.mjs mindspace-server-adapter.test.mjs mindspace-pages.test.mjs mindspace-page-sync-service.test.mjs public-site-bases.test.mjs mindspace-html-download-links.test.mjs mindspace-page-purge.test.mjs mindspace-public-delivery.test.mjs mindspace-public-page-context.test.mjs mindspace-public-route.test.mjs mindspace-publications.test.mjs mindspace-public-links.test.mjs mindspace-chat-save.test.mjs mindspace-chat-docx-package.test.mjs mindspace-public-finish-sync.test.mjs mindspace-chat-context.test.mjs mindspace-canonical-url.test.mjs mindspace-conversation-package.test.mjs mindspace-conversation-package-backfill.test.mjs mindspace-conversation-package-public-html.test.mjs mindspace-conversation-package-verify.test.mjs mindspace-conversation-package-registry.test.mjs mindspace-conversation-package-routes.test.mjs mindspace-conversation-package-store.test.mjs mindspace-conversation-schema.test.mjs mindspace-runtime-config.test.mjs mindspace-service.test.mjs mindspace-storage-adapter.test.mjs mindspace-content-scan.test.mjs mindspace-html-localize.test.mjs mindspace-visual-editor.test.mjs mindspace-cleanup.test.mjs mindspace-thumbnails.test.mjs mindspace-workspace-thumbnails.test.mjs mindspace-workspace-sync.test.mjs mindspace-asset-preview.test.mjs mindspace-agent-jobs.test.mjs mindspace-agent-runner.test.mjs mindspace-sandbox-mcp.test.mjs message-stream.test.mjs mindspace-service/mindspace-rpc-server.test.mjs plaza-posts.test.mjs plaza-interactions.test.mjs plaza-algorithm.test.mjs plaza-seo.test.mjs plaza-ops.test.mjs user-auth.test.mjs llm-providers.test.mjs admin-guard.test.mjs user-feedback.test.mjs memory-v2.test.mjs memory-v2-admin-config.test.mjs memory-v2-adapter-scaffold.test.mjs memory-v2-backend-contract.test.mjs memory-v2-health.test.mjs memory-v2-runtime.test.mjs memory-v2-plugin-backends.test.mjs memory-v2-pgvector.test.mjs memory-v2-pgvector-schema.test.mjs memory-v2-pgvector-backfill.test.mjs memory-v2-pgvector-smoke.test.mjs memory-v2-qdrant.test.mjs memory-v2-weaviate.test.mjs memory-v2-mem0.test.mjs memory-v2-letta.test.mjs memory-v2-external-adapters.test.mjs scripts/embed-memory-v2-local-hash.test.mjs scripts/check-memory-v2-app-canary.test.mjs scripts/check-memory-v2-config-gaps.test.mjs scripts/check-memory-v2-contracts.test.mjs scripts/check-memory-v2-health.test.mjs scripts/check-memory-v2-session-flow.test.mjs scripts/check-memory-v2-stack.test.mjs scripts/setup-memory-v2-pgvector-schema.test.mjs scripts/backfill-memory-v2-pgvector.test.mjs scripts/scaffold-memory-v2-backend.test.mjs scripts/smoke-memory-v2-pgvector.test.mjs scripts/smoke-memory-v2-qdrant.test.mjs scripts/smoke-memory-v2-external.test.mjs scripts/mock-memory-v2-services.test.mjs",
     "test:mindspace-service": "node --test mindspace-service/mindspace-rpc-server.test.mjs",
     "verify:chat-finish-sync": "node scripts/verify-chat-finish-sync.mjs",
     "verify:public-finish-sync-runtime": "node scripts/verify-public-finish-sync-runtime.mjs",
     "verify:mindspace-publish-guards": "node scripts/verify-mindspace-publish-guards.mjs",
     "verify:mindspace-publish-guards:full": "node scripts/verify-mindspace-publish-guards.mjs --with-runtime",
+    "verify:mindspace-page-sync-guards": "node scripts/verify-mindspace-page-sync-guards.mjs",
     "verify:wechat-channel-isolation": "node scripts/check-wechat-channel-isolation.mjs",
     "test:mindspace-e2e": "node scripts/mindspace-e2e.mjs",
     "test:mindspace-pages-e2e": "node scripts/mindspace-pages-e2e.mjs",
diff --git a/public-site-bases.test.mjs b/public-site-bases.test.mjs
new file mode 100644
index 0000000..ccea7a9
--- /dev/null
+++ b/public-site-bases.test.mjs
@@ -0,0 +1,64 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  DEFAULT_PLAZA_PUBLIC_BASE,
+  DEFAULT_LOCAL_PLAZA_PUBLIC_BASE,
+  resolvePlazaHomePath,
+  resolvePlazaPostPath,
+  resolvePlazaPublicBase,
+} from './src/utils/public-site-bases.mjs';
+
+test('resolvePlazaPublicBase uses local default on localhost without configured base', () => {
+  assert.equal(
+    resolvePlazaPublicBase({ hostname: '127.0.0.1', dev: false }),
+    DEFAULT_LOCAL_PLAZA_PUBLIC_BASE,
+  );
+});
+
+test('resolvePlazaPublicBase uses plaza.tkmind.cn on production host without configured base', () => {
+  assert.equal(
+    resolvePlazaPublicBase({ hostname: 'm.tkmind.cn', dev: false }),
+    DEFAULT_PLAZA_PUBLIC_BASE,
+  );
+});
+
+test('resolvePlazaPublicBase ignores loopback configured base on production host', () => {
+  assert.equal(
+    resolvePlazaPublicBase({
+      configuredBase: 'http://127.0.0.1:3001',
+      hostname: 'm.tkmind.cn',
+      dev: false,
+    }),
+    DEFAULT_PLAZA_PUBLIC_BASE,
+  );
+});
+
+test('resolvePlazaPublicBase keeps loopback configured base on local host', () => {
+  assert.equal(
+    resolvePlazaPublicBase({
+      configuredBase: 'http://127.0.0.1:3001',
+      hostname: '127.0.0.1',
+      dev: false,
+    }),
+    'http://127.0.0.1:3001',
+  );
+});
+
+test('resolvePlazaPublicBase respects explicit production configured base', () => {
+  assert.equal(
+    resolvePlazaPublicBase({
+      configuredBase: 'https://plaza.tkmind.cn',
+      hostname: 'm.tkmind.cn',
+      dev: false,
+    }),
+    'https://plaza.tkmind.cn',
+  );
+});
+
+test('resolvePlazaHomePath and resolvePlazaPostPath append plaza routes', () => {
+  assert.equal(resolvePlazaHomePath('https://plaza.tkmind.cn'), 'https://plaza.tkmind.cn/plaza');
+  assert.equal(
+    resolvePlazaPostPath('https://plaza.tkmind.cn', 'post-1'),
+    'https://plaza.tkmind.cn/plaza/p/post-1',
+  );
+});
diff --git a/scripts/build-portal-runtime.mjs b/scripts/build-portal-runtime.mjs
index 571cb1c..9ec2680 100755
--- a/scripts/build-portal-runtime.mjs
+++ b/scripts/build-portal-runtime.mjs
@@ -81,7 +81,18 @@ async function writeFile(targetPath, content) {
 async function buildFrontend() {
   if (skipBuild) return;
   console.log('==> 构建 Portal 前端 dist');
-  await run('npm', ['run', 'build']);
+  const buildEnv = {
+    ...process.env,
+    VITE_PLAZA_BASE:
+      process.env.VITE_PLAZA_BASE ??
+      process.env.PLAZA_PUBLIC_BASE ??
+      'https://plaza.tkmind.cn',
+    VITE_MINDSPACE_BASE:
+      process.env.VITE_MINDSPACE_BASE ??
+      process.env.H5_PUBLIC_BASE_URL ??
+      'https://m.tkmind.cn',
+  };
+  await run('npm', ['run', 'build'], { env: buildEnv });
 }
 
 async function bundleServer() {
@@ -397,6 +408,11 @@ async function writeMetadata() {
       '  TKMIND_API_TARGETS / TKMIND_API_TARGET / TKMIND_API_TARGET_1',
       '  H5_USERS_ROOT / MINDSPACE_STORAGE_ROOT / MEMIND_SHARED_PUBLISH_ROOT',
       '',
+      'Frontend compile-time public URLs (baked into dist at build):',
+      '  VITE_PLAZA_BASE defaults to https://plaza.tkmind.cn in build-portal-runtime.mjs',
+      '  VITE_MINDSPACE_BASE defaults to H5_PUBLIC_BASE_URL or https://m.tkmind.cn',
+      '  Do not build production dist with VITE_PLAZA_BASE=http://127.0.0.1:* in .env',
+      '',
       'Deployment and operations transport:',
       '  H5 public domain: m.tkmind.cn',
       '  Current public path: m.tkmind.cn -> 105 nginx -> 103 Portal :8081',
diff --git a/scripts/verify-mindspace-page-sync-guards.mjs b/scripts/verify-mindspace-page-sync-guards.mjs
new file mode 100644
index 0000000..36f65f1
--- /dev/null
+++ b/scripts/verify-mindspace-page-sync-guards.mjs
@@ -0,0 +1,68 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+const root = path.resolve(new URL('..', import.meta.url).pathname);
+
+function read(relativePath) {
+  return fs.readFileSync(path.join(root, relativePath), 'utf8');
+}
+
+function assertIncludes(label, source, snippet) {
+  if (!source.includes(snippet)) {
+    throw new Error(`${label} is missing required guard snippet:\n${snippet}`);
+  }
+}
+
+const serverSource = read('server.mjs');
+const pagesSource = read('mindspace-pages.mjs');
+const contractSource = read('mindspace-server-adapter-contract.mjs');
+
+assertIncludes(
+  'server.mjs syncUserGeneratedPages',
+  serverSource,
+  'await mindSpacePageSync.syncUserGeneratedPages(userId);',
+);
+if (serverSource.includes("mindSpaceServerRuntime.adapterKind === 'remote'")) {
+  throw new Error(
+    'server.mjs must not skip page sync in remote mode; use pageSyncService RPC instead',
+  );
+}
+
+assertIncludes(
+  'mindspace-server-adapter-contract.mjs',
+  contractSource,
+  "pageSyncService: Object.freeze(['syncUserGeneratedPages'])",
+);
+
+assertIncludes(
+  'mindspace-pages.mjs',
+  pagesSource,
+  'readPageContentWithWorkspaceFallback',
+);
+assertIncludes(
+  'mindspace-pages.mjs workspace fallback',
+  pagesSource,
+  "snapshot.relative_path ?? null",
+);
+
+const publicSiteBasesSource = read('src/utils/public-site-bases.mjs');
+const publicUrlSource = read('src/utils/publicUrl.ts');
+const buildRuntimeSource = read('scripts/build-portal-runtime.mjs');
+
+assertIncludes(
+  'public-site-bases.mjs loopback guard',
+  publicSiteBasesSource,
+  'isLoopbackPublicBase',
+);
+assertIncludes(
+  'publicUrl.ts uses public-site-bases',
+  publicUrlSource,
+  "from './public-site-bases.mjs'",
+);
+assertIncludes(
+  'build-portal-runtime.mjs production plaza default',
+  buildRuntimeSource,
+  'https://plaza.tkmind.cn',
+);
+
+console.log('mindspace page sync + thumbnail regression guards ok');
diff --git a/server.mjs b/server.mjs
index 8ab61d4..2f38dbd 100644
--- a/server.mjs
+++ b/server.mjs
@@ -122,7 +122,6 @@ import {
   normalizePublicHtmlRelativePath,
   syncPublicHtmlAfterFinish,
 } from './mindspace-public-finish-sync.mjs';
-import { syncGeneratedPagesFromPublicAssets } from './mindspace-page-sync.mjs';
 import { extractCoverSignals, generateHtmlThumbnail } from './mindspace-thumbnails.mjs';
 import {
   extractSharePreviewMeta,
@@ -299,6 +298,7 @@ let mindSpaceAudit = null;
 let mindSpaceServiceFacade = null;
 let mindSpaceConversationPackageRegistry = null;
 let mindSpacePages = null;
+let mindSpacePageSync = null;
 let mindSpacePageLiveEdit = null;
 let mindSpaceAssetAgent = null;
 let mindSpacePageEditSession = null;
@@ -363,6 +363,7 @@ async function bootstrapUserAuth() {
       resolveUserIdForAgentSession,
       resolveSessionSnapshot: (sessionId) => sessionSnapshotService?.get?.(sessionId),
       registerPublicHtmlArtifactsForConversation,
+      syncWorkspaceAssetsEnabled: WORKSPACE_MAINTENANCE_ENABLED,
       remote: mindSpaceServerRuntime.remote,
       logger: console,
     }),
@@ -372,6 +373,7 @@ async function bootstrapUserAuth() {
     mindSpaceConversationPackageRegistry = mindSpaceRuntimeAdapter.conversationPackageRegistry;
     mindSpaceAssets = mindSpaceRuntimeAdapter.assetService;
     mindSpacePages = mindSpaceRuntimeAdapter.pageService;
+    mindSpacePageSync = mindSpaceRuntimeAdapter.pageSyncService;
     mindSpacePageLiveEdit = mindSpaceRuntimeAdapter.pageLiveEditService;
     mindSpaceAssetAgent = mindSpaceRuntimeAdapter.assetAgentService;
     mindSpacePublications = mindSpaceRuntimeAdapter.publicationService;
@@ -2942,36 +2944,10 @@ async function resolveExistingSavedPage(userId, { sessionId, messageId, relative
 
 const SAVE_TARGET_CATEGORIES = new Set(['draft', 'oa', 'public']);
 
-const pageSyncInFlight = new Map();
-
+// REGRESSION GUARD: mindspace-page-sync-thumbnail — remote 也经 pageSyncService RPC 同步 public HTML
 async function syncUserGeneratedPages(userId) {
-  if (!mindSpacePages || !authPool || !userId) return;
-  if (mindSpaceServerRuntime.adapterKind === 'remote') return;
-
-  let inFlight = pageSyncInFlight.get(userId);
-  if (!inFlight) {
-    inFlight = syncGeneratedPagesFromPublicAssets({
-      pool: authPool,
-      pageService: mindSpacePages,
-      assetService: mindSpaceAssets,
-      userId,
-      publishDir: resolveMindSpaceUserPublishDir(__dirname, { id: userId }),
-      syncWorkspaceAssets:
-        mindSpaceAssets && WORKSPACE_MAINTENANCE_ENABLED
-          ? (targetUserId, options) => mindSpaceAssets.syncWorkspaceAssets(targetUserId, options)
-          : null,
-    })
-      .catch((error) => {
-        console.warn('[MindSpace] page sync failed:', error?.message ?? error);
-      })
-      .finally(() => {
-        if (pageSyncInFlight.get(userId) === inFlight) {
-          pageSyncInFlight.delete(userId);
-        }
-      });
-    pageSyncInFlight.set(userId, inFlight);
-  }
-  await inFlight;
+  if (!mindSpacePageSync || !userId) return;
+  await mindSpacePageSync.syncUserGeneratedPages(userId);
 }
 
 async function resolveChatSaveBundle(user, h5Root, input = {}) {
diff --git a/src/utils/public-site-bases.mjs b/src/utils/public-site-bases.mjs
new file mode 100644
index 0000000..08af4aa
--- /dev/null
+++ b/src/utils/public-site-bases.mjs
@@ -0,0 +1,43 @@
+export const DEFAULT_PLAZA_PUBLIC_BASE = 'https://plaza.tkmind.cn';
+export const DEFAULT_LOCAL_PLAZA_PUBLIC_BASE = 'http://127.0.0.1:3001';
+
+export function isLocalSiteHost(hostname) {
+  const host = String(hostname ?? '').trim().toLowerCase();
+  return !host || host === 'localhost' || host === '127.0.0.1' || host.endsWith('.localhost');
+}
+
+export function isLoopbackPublicBase(base) {
+  const value = String(base ?? '').trim();
+  if (!value) return false;
+  return (
+    /^https?:\/\/127\.0\.0\.1(?::\d+)?(?:\/|$)/i.test(value) ||
+    /^https?:\/\/localhost(?::\d+)?(?:\/|$)/i.test(value)
+  );
+}
+
+export function resolvePlazaPublicBase({
+  configuredBase = '',
+  dev = false,
+  hostname = '',
+} = {}) {
+  const configured = String(configuredBase ?? '').trim().replace(/\/$/, '');
+  const localHost = isLocalSiteHost(hostname);
+  if (configured) {
+    if (!localHost && !dev && isLoopbackPublicBase(configured)) {
+      return DEFAULT_PLAZA_PUBLIC_BASE;
+    }
+    return configured;
+  }
+  if (dev || localHost) {
+    return DEFAULT_LOCAL_PLAZA_PUBLIC_BASE;
+  }
+  return DEFAULT_PLAZA_PUBLIC_BASE;
+}
+
+export function resolvePlazaHomePath(base) {
+  return `${String(base ?? '').replace(/\/$/, '')}/plaza`;
+}
+
+export function resolvePlazaPostPath(base, postId) {
+  return `${String(base ?? '').replace(/\/$/, '')}/plaza/p/${encodeURIComponent(postId)}`;
+}
diff --git a/src/utils/publicUrl.ts b/src/utils/publicUrl.ts
index 2629501..f13ed22 100644
--- a/src/utils/publicUrl.ts
+++ b/src/utils/publicUrl.ts
@@ -1,3 +1,9 @@
+import {
+  resolvePlazaHomePath,
+  resolvePlazaPostPath,
+  resolvePlazaPublicBase,
+} from './public-site-bases.mjs';
+
 export function resolvePublicPageUrl(publicUrl: string): string {
   const value = String(publicUrl ?? '').trim();
   if (!value) return value;
@@ -7,26 +13,20 @@ export function resolvePublicPageUrl(publicUrl: string): string {
   return `${window.location.origin}/${value.replace(/^\/+/, '')}`;
 }
 
+function resolvedPlazaBase(): string {
+  return resolvePlazaPublicBase({
+    configuredBase: import.meta.env.VITE_PLAZA_BASE,
+    dev: import.meta.env.DEV,
+    hostname: typeof window !== 'undefined' ? window.location.hostname : '',
+  });
+}
+
 export function resolvePlazaPostUrl(postId: string): string {
-  const configured = String(import.meta.env.VITE_PLAZA_BASE ?? '').trim();
-  if (configured) {
-    return `${configured.replace(/\/$/, '')}/plaza/p/${encodeURIComponent(postId)}`;
-  }
-  if (import.meta.env.DEV) {
-    return `http://127.0.0.1:3001/plaza/p/${encodeURIComponent(postId)}`;
-  }
-  return `${window.location.origin}/plaza/p/${encodeURIComponent(postId)}`;
+  return resolvePlazaPostPath(resolvedPlazaBase(), postId);
 }
 
 export function resolvePlazaHomeUrl(): string {
-  const configured = String(import.meta.env.VITE_PLAZA_BASE ?? '').trim();
-  if (configured) {
-    return `${configured.replace(/\/$/, '')}/plaza`;
-  }
-  if (import.meta.env.DEV) {
-    return 'http://127.0.0.1:3001/plaza';
-  }
-  return `${window.location.origin}/plaza`;
+  return resolvePlazaHomePath(resolvedPlazaBase());
 }
 
 export function resolveMindSpaceHomeUrl(): string {