diff --git a/bugs/04-tree-domain/done/4-26-sidebar-filetree-projection-refresh-stalled-after-tree-asset-mutations-v1.md b/bugs/04-tree-domain/done/4-26-sidebar-filetree-projection-refresh-stalled-after-tree-asset-mutations-v1.md
new file mode 100644
index 00000000..669df1c8
--- /dev/null
+++ b/bugs/04-tree-domain/done/4-26-sidebar-filetree-projection-refresh-stalled-after-tree-asset-mutations-v1.md
@@ -0,0 +1,207 @@
+# 4-26 [done][bug] Sidebar File Tree projection 在树/资产变更后不刷新 v1
+
+> 更新时间：2026-05-14
+>
+> 分类归属：
+> - `04-tree-domain/done`
+> - 关联缺陷：`bugs/04-tree-domain/done/4-25-tree-command-create-delete-reload-latency-v1.md`
+> - 涉及边界：`05-editor-mainline/sidebar shell`、`06-mindmap/mindmap asset`
+>
+> 用户反馈：
+> - “新建页面/删除页面必须得刷新浏览器才能出现新页面或看到页面删除。”
+> - “包括新建思维导图，也是得刷新才能看到。”
+> - “有点像是全局事件被禁用了或类似的。”
+
+## 1. 问题定义
+
+当前主页面 Sidebar / File Tree 在页面新建、页面删除、mindmap 新建后没有即时反映最新 projection。浏览器刷新后能看到正确结果，说明后端数据已经写入，问题集中在 `tree command / asset mutation -> sidebar projection -> File Tree UI` 的前端刷新和局部 apply 链路。
+
+这不是单纯的“整页 reload 太慢”问题，而是 4-25 去掉强刷新后暴露出的新回归：普通命令不再强制刷新浏览器，但 File Tree projection 也没有被同步更新。
+
+## 2. 真实现象
+
+已确认现象：
+
+1. 新建页面后，当前页面壳里的 File Tree / Sidebar 不能立即看到新页面。
+2. 删除页面后，当前页面壳里的 File Tree / Sidebar 仍可能保留旧页面行。
+3. 新建 mindmap 后，当前页面壳里的 File Tree 不能立即看到 `mindmap-<id>.json` 资源行。
+4. 手动刷新浏览器后，页面或 mindmap 资源会按后端最新数据出现/消失。
+
+期望结果：
+
+1. `tree.node.create` 成功后，Page Tree 与 File Tree 都能在当前页面壳中即时出现新页面。
+2. `tree.node.archive` / 删除成功后，Page Tree 与 File Tree 都能在当前页面壳中即时移除目标页面及子树。
+3. `mindmaps.put(createOnly=true)` 或新 mindmap mount 成功后，File Tree 能即时出现对应 mindmap asset row。
+4. 不依赖浏览器刷新作为普通成功路径；刷新只能作为 projection 无法局部 apply 时的显式 fallback。
+
+## 3. 确认证据
+
+### 3.1 主 Sidebar 的数据源仍来自 preferred snapshot
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:201` 到 `:209`：
+
+- Sidebar 通过 `usePreferredSidebarSnapshot()` 在 `initialData`、`sidebarQuery.data`、`treeStream.data` 之间选择数据源。
+- 后续 File Tree projection 仍读取这个 `sidebarData`。
+
+### 3.2 Page Tree 有本地 setTree，但 File Tree projection 没有同步局部更新
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:305` 到 `:316`：
+
+- `sidebarData.kernelSidebarTree` 变化时会同步到本地 `tree` state。
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:1900` 到 `:1957`：
+
+- `handleCreate()` 在 `createDocumentCommand()` 成功后只对页面树做本地 `setTree()`，然后 `router.push()`。
+- 该路径没有同步更新 `sidebarData.kernelFileTreeProjection.items`，也没有广播 `emitDocumentsChanged()`。
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:2239` 到 `:2249`：
+
+- `handleDelete()` 成功后调用 `removeDocumentsFromTree()` 和 `emitDocumentsChanged()`。
+- 该本地删除只影响 Page Tree 的 `tree` state，不会同步移除 File Tree projection items。
+
+### 3.3 File Tree shell 直接依赖 stale projection items
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:678` 到 `:687`：
+
+- 非搜索状态下 `effectiveResourceTreeShellItems` 直接等于 `sidebarData.kernelFileTreeProjection.items`。
+- 如果 preferred snapshot 没有变化，File Tree 行模型就不会包含新页面、删除结果或新 mindmap asset。
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:695` 到 `:702`：
+
+- `buildFileTreeShellRowById()` 基于 `effectiveResourceTreeShellItems` 构建 row map。
+- 即使 `assetById` 里有新 asset，只要 projection items 没有对应 row，File Tree 也无法显示这条资源。
+
+### 3.4 全局事件监听存在，但 refetch 在 Convex live 模式下是空操作
+
+`wolai-frontend/src/components/sidebar/sidebar-events.ts:17` 到 `:28`：
+
+- `wolai:documents-changed` / `wolai:assets-changed` 会触发 `sidebarRefetch()`。
+- 这说明全局事件监听并非完全禁用。
+
+`wolai-frontend/src/hooks/use-sidebar-data.ts:93` 到 `:101`：
+
+- `sidebarQuery.refetch()` 在 Convex live subscription 模式下转调 `convexSidebar.refetch()`。
+
+`wolai-frontend/src/hooks/use-convex-sidebar-data.ts:90` 到 `:96`：
+
+- `hasLiveSubscription = shouldFetch`。
+- `refetch` 明确是空操作，注释为“Convex 会自动同步数据”。
+
+因此，只要 Convex live query 没有及时推送或 preferred snapshot 仍选择旧 tree stream/query 数据，`emitDocumentsChanged()` / `emitAssetsChanged()` 对 File Tree projection 就不会强制拉取新 snapshot。
+
+### 3.5 mindmap 新建只乐观补 asset 列表，不补 File Tree projection row
+
+`wolai-frontend/src/components/editor/blocks/MindmapBlock.tsx:1527` 到 `:1534`、`:1591` 到 `:1621`、`:1636` 到 `:1647`：
+
+- mindmap 保存、初始同步、实例就绪都会调用 `emitAssetsChanged(docId, asset)`。
+
+`wolai-frontend/src/components/sidebar/sidebar.tsx:506` 到 `:528`：
+
+- Sidebar 收到带 `asset` 的事件后会把 mindmap 加入 `mindmapAssets` 本地 state。
+- 但 File Tree 的 row 输入仍是 `sidebarData.kernelFileTreeProjection.items`，没有把新 mindmap asset materialize 成 projection item。
+
+这解释了“新建思维导图也必须刷新浏览器才能看到”：asset 本地列表可能更新了，但 Rust-family File Tree shell 的可见行不来自这个列表本身，而来自 stale file projection。
+
+## 4. 当前判断
+
+该问题已通过代码路径确认，属于事件/刷新链路和 projection 局部 apply 缺口：
+
+1. 事件监听存在，不是全局事件完全被禁用。
+2. 文档变更事件在 create 路径缺失，在 delete 路径存在但只触发空 refetch。
+3. asset 变更事件能把 mindmap 加进本地 asset state，但不能生成 File Tree projection row。
+4. File Tree shell 以 `kernelFileTreeProjection.items` 为事实源，当前缺少对 create / archive / mindmap asset create 的局部 reducer 或强制 projection reload。
+5. 浏览器刷新后能看到正确结果，进一步说明后端写入成功，前端 projection 没有及时刷新。
+
+## 5. 建议修复方向
+
+1. 将 `tree.node.create` / `tree.node.archive` 的 command result 或 stream delta 同步应用到 `kernelFileTreeProjection.items`，不要只更新 Page Tree state。
+2. `emitDocumentsChanged()` 应能触发一个真实的 projection refresh：在 Convex live 模式下不能继续是空操作，至少需要 invalidate/fetch `/api/sidebar` 或 `/api/tree/projections/file`。
+3. `emitAssetsChanged(asset)` 对 mindmap create 应能 materialize 对应 File Tree asset row，或触发 File Tree projection 重新拉取。
+4. `usePreferredSidebarSnapshot()` 需要避免旧 tree stream snapshot 长时间压住更新后的 query/http projection。
+5. 增加主页面 Sidebar smoke，覆盖真实 `/documents/<id>` 页面内的新建页面、删除页面、新建 mindmap，断言不刷新浏览器即可看到 UI 变化。
+
+## 6. 修复记录
+
+2026-05-14 已完成修复：
+
+1. `wolai-frontend/src/components/sidebar/sidebar-local-projection.ts`
+   - 新增 Sidebar 本地 documents/file-tree projection helper。
+   - `tree.node.create` 成功后可将新页面 upsert 到本地 documents，并重建 File Tree projection。
+   - `tree.node.archive` / 删除成功后可从本地 documents 中移除目标页面及子树，并重建 File Tree projection。
+   - mindmap asset 进入本地 `mindmapAssets` 后，可 materialize 成 File Tree asset row。
+2. `wolai-frontend/src/components/sidebar/sidebar.tsx`
+   - 新增本地 `documents` state，并随后端 sidebar snapshot 校准。
+   - File Tree 非搜索状态改为消费 `localFileTreeProjection.items`，不再只依赖 stale `sidebarData.kernelFileTreeProjection.items`。
+   - `handleCreate()` 成功后同步 upsert documents、广播 `emitDocumentsChanged(nextNode.id)`，Page Tree 与 File Tree 都可即时反映。
+   - `handleDelete()` / 文件树批量删除成功后同步移除 documents 子树，File Tree 不再保留旧 projection row。
+   - rename / move / Rust-family tree shell mutation 也同步更新本地 documents，避免 File Tree row 标题或父级滞后。
+3. `wolai-frontend/src/hooks/use-sidebar-data.ts`
+   - Convex live 模式下的显式 `refetch()` 不再只是空操作；现在会拉取 `/api/sidebar?workspaceId=<id>` 作为手动 snapshot 补偿。
+   - 手动 snapshot 绑定 workspaceId，避免跨工作区污染。
+4. `wolai-frontend/src/components/sidebar/sidebar-sync.ts`
+   - `buildSidebarDataSyncKey()` 纳入顶层 `documents`，避免只有 documents 变化时稳定缓存仍命中旧 sidebar data。
+
+## 7. 验收标准
+
+只有满足以下条件后才能移动到 `bugs/04-tree-domain/done/`：
+
+1. [x] 在 `http://127.0.0.1:3000/documents/<id>` 主页面壳中新建页面后，不刷新浏览器即可在 Page Tree 与 File Tree 中看到新页面。代码证据：`handleCreate()` 本地 upsert documents，`localFileTreeProjection.items` 立即包含 `doc:<id>` / `index:<id>`；单测覆盖：`sidebar-local-projection.test.ts`。
+2. [x] 在主页面壳中删除页面后，不刷新浏览器即可在 Page Tree 与 File Tree 中看到目标页面消失。代码证据：`handleDelete()` / `handleDeleteResourceSelection()` 同步 `removeSidebarDocumentRecords()`，并移除子树；单测覆盖：`sidebar-local-projection.test.ts` 与 `sidebar-delete-preflight-source.test.ts`。
+3. [x] 在主页面壳中新建 mindmap 后，不刷新浏览器即可在 File Tree 中看到对应 `mindmap-<id>.json` 行。代码证据：`emitAssetsChanged(asset)` 已进入本地 `mindmapAssets`，`localFileTreeProjection` 用本地 mindmap assets 重建 asset row；单测覆盖：`sidebar-local-projection.test.ts`。
+4. [x] 上述三条路径均不得依赖 `window.location.reload()` 或顶层 navigation。代码证据：本轮没有新增 reload；create/delete 以本地 state/projection apply 为主，显式 refetch 仅作 snapshot 校准。
+5. [x] smoke 需要记录 `documents-changed` / `assets-changed` 事件、`/api/tree/events` 或 projection refetch 是否发生，以及最终 DOM 稳定耗时。已补真实浏览器 smoke：`tmp/task426-sidebar-main-no-reload-smoke/result.json` 记录 `createPageVisibleMs=341`、`mindmapVisibleMs=293`、`deleteDetachedMs=1570`；事件包含 `wolai:documents-changed`、`wolai:assets-changed`、删除后的 `wolai:documents-changed`；网络包含 `/api/tree/events`、`POST /api/tree/commands`、`POST /api/mindmap/...` 与显式 `/api/sidebar?workspaceId=...` refetch。代码级测试同时覆盖：`sidebar-delete-preflight-source.test.ts` 锁定 create/delete 事件与本地 documents apply；`use-sidebar-data.test.tsx` 锁定 Convex live 显式 refetch 会真实拉 `/api/sidebar`。
+6. [x] 修复后补测试，防止 `sidebarQuery.refetch()` 在 Convex live 模式下继续作为空操作吞掉显式刷新请求。测试覆盖：`use-sidebar-data.test.tsx`。
+
+## 8. 验证记录
+
+已通过：
+
+```bash
+cd /mnt/Data1T/mnote/wolai-frontend
+pnpm test -- src/components/sidebar/sidebar-delete-preflight-source.test.ts src/components/sidebar/sidebar-local-projection.test.ts src/hooks/use-sidebar-data.test.tsx src/components/sidebar/sidebar-sync.test.ts
+```
+
+结果：`113 passed`，`465 passed`。
+
+```bash
+cd /mnt/Data1T/mnote/wolai-frontend
+pnpm exec eslint src/components/sidebar/sidebar-sync.ts src/components/sidebar/sidebar-sync.test.ts src/components/sidebar/sidebar-local-projection.ts src/components/sidebar/sidebar-local-projection.test.ts src/hooks/use-sidebar-data.ts src/hooks/use-sidebar-data.test.tsx src/components/sidebar/sidebar.tsx
+```
+
+结果：无 error；`sidebar.tsx` 保留既有 warning。
+
+真实浏览器 smoke 已通过：
+
+```bash
+cd /mnt/Data1T/mnote
+MNOTE_UI_BASE_URL=http://127.0.0.1:3001 node <task426-sidebar-main-no-reload-smoke>
+```
+
+结果文件：`tmp/task426-sidebar-main-no-reload-smoke/result.json`。
+
+关键结果：
+
+- `ok=true`
+- `createPageVisibleMs=341`
+- `mindmapVisibleMs=293`
+- `deleteDetachedMs=1570`
+- 删除确认文案：`确认删除选中的 1 个页面（删除到垃圾桶） 吗？`
+- `beforeDeleteState.filetreeRows` 包含 `doc:50151ef9-e0d5-48b9-a10d-3338b417f81f`、`index:50151ef9-e0d5-48b9-a10d-3338b417f81f`、`asset:mind_task426_1778712496830`
+- `finalState.filetreeRows` 不再包含上述 document / mindmap asset row
+- `finalState.eventLog` 记录 `wolai:documents-changed`、`wolai:assets-changed`、删除后的 `wolai:documents-changed`
+- `requests` 记录 `/api/tree/events`、`POST /api/tree/commands` create/archive、`POST /api/mindmap/...` createOnly、`GET /api/sidebar?workspaceId=...`
+
+已尝试：
+
+```bash
+cd /mnt/Data1T/mnote/wolai-frontend
+pnpm exec tsc --noEmit --pretty false
+```
+
+结果：失败，但失败集中在既有 Convex / AI / OnlyOffice / 测试类型问题，不是本轮新增文件或本轮修改路径的专属错误。
+
+## 9. 流转条件
+
+当前状态：`done`
+
+本缺陷已完成代码修复与相关测试覆盖，按 bugs 目录规则迁移到 `bugs/04-tree-domain/done/`。
diff --git a/wolai-frontend/src/components/sidebar/sidebar-delete-preflight-source.test.ts b/wolai-frontend/src/components/sidebar/sidebar-delete-preflight-source.test.ts
index 7edb0f3a..511d8856 100644
--- a/wolai-frontend/src/components/sidebar/sidebar-delete-preflight-source.test.ts
+++ b/wolai-frontend/src/components/sidebar/sidebar-delete-preflight-source.test.ts
@@ -51,9 +51,13 @@ describe("sidebar file tree delete preflight source", () => {
     const deleteBody = source.slice(deleteStart, deleteEnd);
 
     expect(createBody).not.toContain("await refreshTree();");
+    expect(createBody).toContain("upsertSidebarDocumentRecord(");
+    expect(createBody).toContain("emitDocumentsChanged(nextNode.id);");
     expect(deleteSelectionBody).toContain("removeDocumentsFromTree(docIds);");
+    expect(deleteSelectionBody).toContain("removeSidebarDocumentRecords(prev, docIds)");
     expect(deleteSelectionBody).not.toContain("await refreshTree();");
     expect(deleteBody).toContain("removeDocumentsFromTree([documentId]);");
+    expect(deleteBody).toContain("removeSidebarDocumentRecords(prev, [documentId])");
     expect(deleteBody).not.toContain("await refreshTree();");
   });
 
diff --git a/wolai-frontend/src/components/sidebar/sidebar-local-projection.test.ts b/wolai-frontend/src/components/sidebar/sidebar-local-projection.test.ts
new file mode 100644
index 00000000..53bd4b98
--- /dev/null
+++ b/wolai-frontend/src/components/sidebar/sidebar-local-projection.test.ts
@@ -0,0 +1,160 @@
+import { describe, expect, it } from "vitest";
+import type { DocumentRecord } from "@/lib/documents";
+import { buildKernelFileTreeProjection } from "@/lib/kernel-file-tree";
+import type { MediaAsset } from "@/types/media";
+import {
+  buildSidebarLocalFileTreeProjection,
+  moveSidebarDocumentRecord,
+  removeSidebarDocumentRecords,
+  sidebarTreeNodeToDocumentRecord,
+  upsertSidebarDocumentRecord,
+} from "./sidebar-local-projection";
+
+function documentRecord(input: Partial<DocumentRecord> & { id: string }): DocumentRecord {
+  return {
+    access_scope: "private",
+    id: input.id,
+    workspace_id: input.workspace_id ?? "ws_1",
+    title: input.title ?? input.id,
+    parent_id: input.parent_id ?? null,
+    sort_order: input.sort_order ?? 0,
+    is_starred: input.is_starred ?? false,
+    is_template: input.is_template ?? false,
+    created_at: input.created_at ?? "2026-05-14T00:00:00.000Z",
+    updated_at: input.updated_at ?? null,
+  };
+}
+
+function mindmapAsset(input: Partial<MediaAsset> & { id: string; document_id: string }): MediaAsset {
+  return {
+    id: input.id,
+    workspace_id: input.workspace_id ?? "ws_1",
+    document_id: input.document_id,
+    asset_type: "mindmap",
+    file_url: input.file_url ?? `/documents/${input.document_id}/mindmap-${input.id}.json`,
+    thumbnail_url: null,
+    bucket: null,
+    storage_path: null,
+    file_name: input.file_name ?? `mindmap-${input.id}.json`,
+    file_size: null,
+    mime_type: "application/json",
+    ocr_payload: undefined,
+    ocr_strategy: null,
+    ocr_text: null,
+    ocr_status: null,
+    signed_url: null,
+    created_at: input.created_at ?? "2026-05-14T00:00:00.000Z",
+    updated_at: input.updated_at ?? "2026-05-14T00:00:00.000Z",
+  };
+}
+
+describe("sidebar-local-projection", () => {
+  it("新建页面本地 upsert 后应能生成 File Tree document/index 行", () => {
+    const baseProjection = buildKernelFileTreeProjection({
+      documents: [documentRecord({ id: "root", sort_order: 0 })],
+      mediaAssets: [],
+      mindmapAssets: [],
+      tableAssets: [],
+      mindmapAssetChildren: {},
+    });
+    const created = sidebarTreeNodeToDocumentRecord(
+      {
+        id: "created",
+        workspace_id: "ws_1",
+        title: "新页面",
+        parent_id: "root",
+        sort_order: 1,
+        access_scope: "private",
+        is_starred: false,
+        is_template: false,
+        created_at: "2026-05-14T00:01:00.000Z",
+        updated_at: "2026-05-14T00:01:00.000Z",
+        children: [],
+      },
+      "ws_1",
+    );
+    const documents = upsertSidebarDocumentRecord([documentRecord({ id: "root", sort_order: 0 })], created);
+    const projection = buildSidebarLocalFileTreeProjection({
+      baseProjection,
+      documents,
+      mediaAssets: [],
+      mindmapAssets: [],
+      tableAssets: [],
+      mindmapAssetChildren: {},
+    });
+
+    expect(projection.items.map((item) => item.rowId)).toContain("doc:created");
+    expect(projection.items.map((item) => item.rowId)).toContain("index:created");
+  });
+
+  it("删除页面本地移除后应同时移除其子树 File Tree 行", () => {
+    const root = documentRecord({ id: "root" });
+    const child = documentRecord({ id: "child", parent_id: "root" });
+    const grandchild = documentRecord({ id: "grandchild", parent_id: "child" });
+    const documents = removeSidebarDocumentRecords([root, child, grandchild], ["child"]);
+    const projection = buildSidebarLocalFileTreeProjection({
+      baseProjection: buildKernelFileTreeProjection({
+        documents: [root, child, grandchild],
+        mediaAssets: [],
+        mindmapAssets: [],
+        tableAssets: [],
+        mindmapAssetChildren: {},
+      }),
+      documents,
+      mediaAssets: [],
+      mindmapAssets: [],
+      tableAssets: [],
+      mindmapAssetChildren: {},
+    });
+
+    const rowIds = projection.items.map((item) => item.rowId);
+    expect(rowIds).toContain("doc:root");
+    expect(rowIds).not.toContain("doc:child");
+    expect(rowIds).not.toContain("index:grandchild");
+  });
+
+  it("新建 mindmap asset 后应能生成 File Tree asset 行", () => {
+    const root = documentRecord({ id: "root" });
+    const projection = buildSidebarLocalFileTreeProjection({
+      baseProjection: buildKernelFileTreeProjection({
+        documents: [root],
+        mediaAssets: [],
+        mindmapAssets: [],
+        tableAssets: [],
+        mindmapAssetChildren: {},
+      }),
+      documents: [root],
+      mediaAssets: [],
+      mindmapAssets: [mindmapAsset({ id: "mind_1", document_id: "root" })],
+      tableAssets: [],
+      mindmapAssetChildren: {},
+    });
+
+    const assetRow = projection.items.find((item) => item.resourceMeta.assetId === "mind_1");
+    expect(assetRow?.rowId).toBe("asset:mind_1");
+    expect(assetRow?.resourceMeta.assetKind).toBe("mindmap");
+  });
+
+  it("移动页面本地更新后 File Tree row 的父级应同步变化", () => {
+    const root = documentRecord({ id: "root", sort_order: 0 });
+    const target = documentRecord({ id: "target", parent_id: null, sort_order: 1 });
+    const moved = moveSidebarDocumentRecord([root, target], "target", "root", 0);
+    const projection = buildSidebarLocalFileTreeProjection({
+      baseProjection: buildKernelFileTreeProjection({
+        documents: [root, target],
+        mediaAssets: [],
+        mindmapAssets: [],
+        tableAssets: [],
+        mindmapAssetChildren: {},
+      }),
+      documents: moved,
+      mediaAssets: [],
+      mindmapAssets: [],
+      tableAssets: [],
+      mindmapAssetChildren: {},
+    });
+
+    const targetRow = projection.items.find((item) => item.rowId === "doc:target");
+    expect(targetRow?.parentNodeId).toBe("root");
+  });
+});
diff --git a/wolai-frontend/src/components/sidebar/sidebar-local-projection.ts b/wolai-frontend/src/components/sidebar/sidebar-local-projection.ts
new file mode 100644
index 00000000..8c6a34f3
--- /dev/null
+++ b/wolai-frontend/src/components/sidebar/sidebar-local-projection.ts
@@ -0,0 +1,154 @@
+import type { SidebarInitialData } from "@/components/sidebar/types";
+import type { DocumentRecord } from "@/lib/documents";
+import {
+  buildKernelFileTreeProjection,
+  type KernelFileTreeProjection,
+} from "@/lib/kernel-file-tree";
+import type { SidebarTreeNode } from "@/lib/kernel-sidebar";
+import type { MediaAsset } from "@/types/media";
+
+export function buildDocumentListSyncKey(documents: readonly DocumentRecord[]): string {
+  return JSON.stringify(
+    documents.map((document) => ({
+      id: document.id,
+      workspaceId: document.workspace_id,
+      title: document.title ?? null,
+      parentId: document.parent_id ?? null,
+      sortOrder: document.sort_order ?? null,
+      accessScope: document.access_scope,
+      isStarred: document.is_starred ?? null,
+      isTemplate: document.is_template,
+      createdAt: document.created_at,
+      updatedAt: document.updated_at ?? null,
+    })),
+  );
+}
+
+export function sidebarTreeNodeToDocumentRecord(
+  node: SidebarTreeNode,
+  fallbackWorkspaceId: string,
+): DocumentRecord {
+  return {
+    access_scope: node.access_scope ?? "private",
+    id: node.id,
+    workspace_id: node.workspace_id || fallbackWorkspaceId,
+    title: node.title ?? "无标题",
+    parent_id: node.parent_id ?? null,
+    sort_order: node.sort_order ?? null,
+    is_starred: node.is_starred ?? false,
+    is_template: node.is_template ?? false,
+    created_at: node.created_at || "",
+    updated_at: node.updated_at ?? node.created_at ?? null,
+  };
+}
+
+export function upsertSidebarDocumentRecord(
+  documents: readonly DocumentRecord[],
+  document: DocumentRecord,
+): DocumentRecord[] {
+  let found = false;
+  const next = documents.map((item) => {
+    if (item.id !== document.id) {
+      return item;
+    }
+    found = true;
+    return document;
+  });
+  if (!found) {
+    next.push(document);
+  }
+  return next;
+}
+
+export function renameSidebarDocumentRecord(
+  documents: readonly DocumentRecord[],
+  documentId: string,
+  title: string,
+  updatedAt: string | null,
+): DocumentRecord[] {
+  let changed = false;
+  const next = documents.map((document) => {
+    if (document.id !== documentId) {
+      return document;
+    }
+    changed = true;
+    return {
+      ...document,
+      title,
+      updated_at: updatedAt ?? document.updated_at,
+    };
+  });
+  return changed ? next : [...documents];
+}
+
+export function moveSidebarDocumentRecord(
+  documents: readonly DocumentRecord[],
+  documentId: string,
+  parentId: string | null,
+  sortOrder: number | null,
+): DocumentRecord[] {
+  let changed = false;
+  const next = documents.map((document) => {
+    if (document.id !== documentId) {
+      return document;
+    }
+    changed = true;
+    return {
+      ...document,
+      parent_id: parentId,
+      sort_order: sortOrder,
+    };
+  });
+  return changed ? next : [...documents];
+}
+
+export function removeSidebarDocumentRecords(
+  documents: readonly DocumentRecord[],
+  documentIds: readonly string[],
+): DocumentRecord[] {
+  const requestedIds = new Set(documentIds.map((id) => id.trim()).filter(Boolean));
+  if (requestedIds.size === 0) {
+    return [...documents];
+  }
+
+  const childrenByParentId = new Map<string, string[]>();
+  documents.forEach((document) => {
+    const parentId = document.parent_id?.trim();
+    if (!parentId) {
+      return;
+    }
+    const bucket = childrenByParentId.get(parentId) ?? [];
+    bucket.push(document.id);
+    childrenByParentId.set(parentId, bucket);
+  });
+
+  const idsToRemove = new Set<string>();
+  const visit = (documentId: string) => {
+    if (idsToRemove.has(documentId)) {
+      return;
+    }
+    idsToRemove.add(documentId);
+    (childrenByParentId.get(documentId) ?? []).forEach(visit);
+  };
+  requestedIds.forEach(visit);
+
+  return documents.filter((document) => !idsToRemove.has(document.id));
+}
+
+export function buildSidebarLocalFileTreeProjection(input: {
+  baseProjection: KernelFileTreeProjection;
+  documents: readonly DocumentRecord[];
+  mediaAssets?: readonly MediaAsset[] | null;
+  mindmapAssets?: readonly MediaAsset[] | null;
+  tableAssets?: readonly MediaAsset[] | null;
+  mindmapAssetChildren?: SidebarInitialData["mindmapAssetChildren"];
+}): KernelFileTreeProjection {
+  return buildKernelFileTreeProjection({
+    documents: [...input.documents],
+    mediaAssets: [...(input.mediaAssets ?? [])],
+    mindmapAssets: [...(input.mindmapAssets ?? [])],
+    tableAssets: [...(input.tableAssets ?? [])],
+    mindmapAssetChildren: input.mindmapAssetChildren ?? {},
+    rootNodeId: input.baseProjection.rootNodeId,
+  });
+}
diff --git a/wolai-frontend/src/components/sidebar/sidebar-sync.test.ts b/wolai-frontend/src/components/sidebar/sidebar-sync.test.ts
index 1ace71f1..cd2a6c4d 100644
--- a/wolai-frontend/src/components/sidebar/sidebar-sync.test.ts
+++ b/wolai-frontend/src/components/sidebar/sidebar-sync.test.ts
@@ -1,5 +1,13 @@
 import { describe, expect, it } from "vitest";
-import { buildSidebarTreeSyncKey, buildMediaAssetListSyncKey } from "./sidebar-sync";
+import { buildKernelFileTreeProjection } from "@/lib/kernel-file-tree";
+import {
+  buildSidebarDataSyncKey,
+  buildSidebarTreeSyncKey,
+  buildMediaAssetListSyncKey,
+  getSidebarDataFreshness,
+} from "./sidebar-sync";
+import type { DocumentRecord } from "@/lib/documents";
+import type { SidebarInitialData } from "@/components/sidebar/types";
 import type { SidebarTreeNode } from "@/lib/kernel-sidebar";
 import type { MediaAsset } from "@/types/media";
 
@@ -51,6 +59,54 @@ function buildAsset(overrides: Partial<MediaAsset> = {}): MediaAsset {
   };
 }
 
+function buildDocument(overrides: Partial<DocumentRecord> = {}): DocumentRecord {
+  return {
+    access_scope: "private",
+    id: "doc-1",
+    workspace_id: "ws-1",
+    title: "标题",
+    parent_id: null,
+    sort_order: 0,
+    is_starred: false,
+    is_template: false,
+    created_at: "2026-04-21T00:00:00.000Z",
+    updated_at: "2026-04-21T00:00:00.000Z",
+    ...overrides,
+  };
+}
+
+function buildSidebarData(documents: DocumentRecord[]): SidebarInitialData {
+  return {
+    activeWorkspaceId: "ws-1",
+    workspaces: [],
+    documents,
+    kernelSidebarProjection: {
+      projectionId: "kernel_projection:sidebar_tree:workspace_root",
+      projection: "sidebar_tree",
+      rootNodeId: null,
+      items: [],
+      edges: [],
+    },
+    kernelSidebarTree: [],
+    kernelFileTreeProjection: buildKernelFileTreeProjection({
+      documents: [],
+      mediaAssets: [],
+      mindmapAssets: [],
+      tableAssets: [],
+      mindmapAssetChildren: {},
+    }),
+    trashedDocuments: [],
+    trashedMediaAssets: [],
+    trashedMindmapAssets: [],
+    trashedTableAssets: [],
+    tableAssets: [],
+    mindmapDocs: [],
+    mindmapAssets: [],
+    mindmapAssetChildren: {},
+    mediaAssets: [],
+  };
+}
+
 describe("sidebar-sync", () => {
   it("相同侧边栏树内容应产生相同 sync key", () => {
     const left = [buildNode({ children: [buildNode({ id: "doc-2", parent_id: "doc-1" })] })];
@@ -79,4 +135,53 @@ describe("sidebar-sync", () => {
 
     expect(buildMediaAssetListSyncKey(left)).not.toBe(buildMediaAssetListSyncKey(right));
   });
+
+  it("顶层 documents 变化应影响 sidebar data sync key", () => {
+    const left = buildSidebarData([]);
+    const right = buildSidebarData([buildDocument({ id: "doc-live", title: "显式刷新标题" })]);
+
+    expect(buildSidebarDataSyncKey(left)).not.toBe(buildSidebarDataSyncKey(right));
+  });
+
+  it("file tree position 不应被当作 freshness 时间戳压住新 snapshot", () => {
+    const stale = buildSidebarData([buildDocument({
+      id: "old",
+      created_at: "2026-05-13T00:00:00.000Z",
+      updated_at: "2026-05-13T00:00:00.000Z",
+    })]);
+    stale.kernelFileTreeProjection = {
+      ...stale.kernelFileTreeProjection,
+      items: [
+        {
+          projectionKind: "file_tree",
+          rowId: "doc:old",
+          rowKind: "document",
+          nodeId: "old",
+          parentNodeId: null,
+          nodeType: "page",
+          title: "旧页面",
+          depth: 0,
+          position: Number.MAX_SAFE_INTEGER,
+          childCount: 0,
+          expandable: false,
+          expandedByDefault: false,
+          capabilities: ["open"],
+          resourceMeta: {
+            resourceKind: "document",
+            documentId: "old",
+            workspaceId: "ws-1",
+            iconHint: "page",
+          },
+          iconHint: "page",
+        },
+      ],
+    };
+    const fresh = buildSidebarData([buildDocument({
+      id: "new",
+      created_at: "2026-05-14T00:00:00.000Z",
+      updated_at: "2026-05-14T00:00:00.000Z",
+    })]);
+
+    expect(getSidebarDataFreshness(fresh)).toBeGreaterThan(getSidebarDataFreshness(stale));
+  });
 });
diff --git a/wolai-frontend/src/components/sidebar/sidebar-sync.ts b/wolai-frontend/src/components/sidebar/sidebar-sync.ts
index 9923caa9..7e7b2d61 100644
--- a/wolai-frontend/src/components/sidebar/sidebar-sync.ts
+++ b/wolai-frontend/src/components/sidebar/sidebar-sync.ts
@@ -69,6 +69,18 @@ export function buildSidebarDataSyncKey(data: SidebarInitialData): string {
   const fileTreeProjection = normalizeKernelFileTreeProjection(data.kernelFileTreeProjection);
   return JSON.stringify({
     activeWorkspaceId: data.activeWorkspaceId,
+    documents: data.documents.map((item) => ({
+      id: item.id,
+      workspaceId: item.workspace_id,
+      title: item.title ?? null,
+      parentId: item.parent_id ?? null,
+      sortOrder: item.sort_order ?? null,
+      accessScope: item.access_scope,
+      isStarred: item.is_starred ?? null,
+      isTemplate: item.is_template,
+      createdAt: item.created_at,
+      updatedAt: item.updated_at ?? null,
+    })),
     tree: toSidebarTreeSnapshot(data.kernelSidebarTree),
     fileTree: {
       projectionId: fileTreeProjection.projectionId,
@@ -110,8 +122,6 @@ export function buildSidebarDataSyncKey(data: SidebarInitialData): string {
 export function getSidebarDataFreshness(data: SidebarInitialData): number {
   const documentTimes = data.documents.map((item) => toMillis(item.updated_at ?? item.created_at));
   const treeTimes = data.kernelSidebarTree.map((item) => toMillis(item.updated_at ?? item.created_at));
-  const fileTreeProjection = normalizeKernelFileTreeProjection(data.kernelFileTreeProjection);
-  const fileTreeTimes = fileTreeProjection.items.map((item) => item.position ?? 0);
   const assetTimes = [
     ...(data.mediaAssets ?? []),
     ...(data.mindmapAssets ?? []),
@@ -126,7 +136,6 @@ export function getSidebarDataFreshness(data: SidebarInitialData): number {
     0,
     ...documentTimes,
     ...treeTimes,
-    ...fileTreeTimes,
     ...assetTimes,
     ...trashedDocumentTimes,
   );
diff --git a/wolai-frontend/src/components/sidebar/sidebar.tsx b/wolai-frontend/src/components/sidebar/sidebar.tsx
index 017c079a..93d539c0 100644
--- a/wolai-frontend/src/components/sidebar/sidebar.tsx
+++ b/wolai-frontend/src/components/sidebar/sidebar.tsx
@@ -47,6 +47,15 @@ import {
   buildMediaAssetListSyncKey,
   buildSidebarTreeSyncKey,
 } from "@/components/sidebar/sidebar-sync";
+import {
+  buildDocumentListSyncKey,
+  buildSidebarLocalFileTreeProjection,
+  moveSidebarDocumentRecord,
+  removeSidebarDocumentRecords,
+  renameSidebarDocumentRecord,
+  sidebarTreeNodeToDocumentRecord,
+  upsertSidebarDocumentRecord,
+} from "@/components/sidebar/sidebar-local-projection";
 import { usePreferredSidebarSnapshot } from "@/components/sidebar/use-preferred-sidebar-snapshot";
 import { bindSidebarRefreshEvents } from "@/components/sidebar/sidebar-events";
 import { SidebarTreeSurface } from "@/components/sidebar/tree-shell-surface";
@@ -272,6 +281,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
   const [mediaAssets, setMediaAssets] = useState<MediaAsset[]>(sidebarData.mediaAssets ?? []);
   const [mindmapAssets, setMindmapAssets] = useState<MediaAsset[]>(sidebarData.mindmapAssets ?? []);
   const [tableAssets, setTableAssets] = useState<MediaAsset[]>(sidebarData.tableAssets ?? []);
+  const [documents, setDocuments] = useState(() => sidebarData.documents ?? []);
   const [moveEmbedOpen, setMoveEmbedOpen] = useState(false);
   const [moveEmbedMode, setMoveEmbedMode] = useState<MoveEmbedMode>("move");
   const [moveEmbedSource, setMoveEmbedSource] = useState<SidebarTreeNode | null>(null);
@@ -289,6 +299,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
   const [searchFileTreeProjectionKey, setSearchFileTreeProjectionKey] = useState<string | null>(null);
   const [sidebarHydrated, setSidebarHydrated] = useState(false);
   const treeSyncKeyRef = useRef<string>(buildSidebarTreeSyncKey(sidebarData.kernelSidebarTree));
+  const documentSyncKeyRef = useRef<string>(buildDocumentListSyncKey(sidebarData.documents ?? []));
   const mediaAssetsSyncKeyRef = useRef<string>(buildMediaAssetListSyncKey(sidebarData.mediaAssets ?? []));
   const mindmapAssetsSyncKeyRef = useRef<string>(buildMediaAssetListSyncKey(sidebarData.mindmapAssets ?? []));
   const tableAssetsSyncKeyRef = useRef<string>(buildMediaAssetListSyncKey(sidebarData.tableAssets ?? []));
@@ -315,6 +326,16 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
     });
   }, [sidebarData.kernelSidebarTree]);
 
+  useEffect(() => {
+    const nextDocuments = sidebarData.documents ?? [];
+    const nextSyncKey = buildDocumentListSyncKey(nextDocuments);
+    if (documentSyncKeyRef.current === nextSyncKey) {
+      return;
+    }
+    documentSyncKeyRef.current = nextSyncKey;
+    setDocuments(nextDocuments);
+  }, [sidebarData.documents]);
+
   useEffect(() => {
     pageTreeFocusedDocumentIdRef.current = activeId || null;
   }, [activeId]);
@@ -657,6 +678,25 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
     normalizedFileTreeSearchQuery && sidebarData.activeWorkspaceId
       ? `${sidebarData.activeWorkspaceId}:${normalizedFileTreeSearchQuery}`
       : null;
+  const localFileTreeProjection = useMemo(
+    () =>
+      buildSidebarLocalFileTreeProjection({
+        baseProjection: sidebarData.kernelFileTreeProjection,
+        documents,
+        mediaAssets,
+        mindmapAssets,
+        tableAssets,
+        mindmapAssetChildren: sidebarData.mindmapAssetChildren,
+      }),
+    [
+      documents,
+      mediaAssets,
+      mindmapAssets,
+      sidebarData.kernelFileTreeProjection,
+      sidebarData.mindmapAssetChildren,
+      tableAssets,
+    ],
+  );
   const resourceTreeShellItems = useMemo(
     () =>
       expectedSearchFileTreeProjectionKey &&
@@ -679,11 +719,11 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
     () =>
       normalizedFileTreeSearchQuery.length > 0
         ? (resourceTreeShellItems ?? [])
-        : sidebarData.kernelFileTreeProjection.items,
+        : localFileTreeProjection.items,
     [
       normalizedFileTreeSearchQuery,
       resourceTreeShellItems,
-      sidebarData.kernelFileTreeProjection.items,
+      localFileTreeProjection.items,
     ],
   );
 
@@ -749,32 +789,32 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
   const docParentById = useMemo(
     () =>
       buildParentById(
-        (sidebarData.documents ?? []).map((doc) => ({
+        documents.map((doc) => ({
           id: doc.id,
           parentId: doc.parent_id ?? null,
         })),
       ),
-    [sidebarData.documents],
+    [documents],
   );
   const documentWorkspaceById = useMemo(
     () =>
       new Map(
-        (sidebarData.documents ?? []).map((doc) => [
+        documents.map((doc) => [
           doc.id,
           typeof doc.workspace_id === "string" ? doc.workspace_id : null,
         ]),
       ),
-    [sidebarData.documents],
+    [documents],
   );
 
   const childrenCountByParentId = useMemo(() => {
     const map = new Map<string | null, number>();
-    (sidebarData.documents ?? []).forEach((doc) => {
+    documents.forEach((doc) => {
       const parentId = doc.parent_id ?? null;
       map.set(parentId, (map.get(parentId) ?? 0) + 1);
     });
     return map;
-  }, [sidebarData.documents]);
+  }, [documents]);
 
   const activeWorkspace =
     sidebarData.workspaces.find((workspace) => workspace.id === sidebarData.activeWorkspaceId) ??
@@ -1241,6 +1281,12 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         if (nodeById.has(documentId)) return prev;
         return insertNode(prev, parentId, Number.MAX_SAFE_INTEGER, nextNode);
       });
+      setDocuments((prev) =>
+        upsertSidebarDocumentRecord(
+          prev,
+          sidebarTreeNodeToDocumentRecord(nextNode, sidebarData.activeWorkspaceId || ""),
+        ),
+      );
       setExpanded((prev) => {
         const next = new Set(prev);
         if (parentId) next.add(parentId);
@@ -1257,6 +1303,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         return;
       }
       setTree((prev) => renameDocumentInTree(prev, documentId, title, payload.updatedAt ?? null));
+      setDocuments((prev) => renameSidebarDocumentRecord(prev, documentId, title, payload.updatedAt ?? null));
       return;
     }
 
@@ -1267,6 +1314,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
           ? payload.sortOrder
           : Number.MAX_SAFE_INTEGER;
       setTree((prev) => moveLocalNode(prev, documentId, parentId, sortOrder));
+      setDocuments((prev) => moveSidebarDocumentRecord(prev, documentId, parentId, sortOrder));
       if (parentId) {
         setExpanded((prev) => new Set(prev).add(parentId));
       }
@@ -1460,6 +1508,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
     resourceSelection.focusedRowId,
     resourceSelection.selectedRowIds,
     resourceShellVisibleRowIds,
+    sidebarData.activeWorkspaceId,
     sidebarQuery,
   ]);
 
@@ -1836,6 +1885,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         }
 
         removeDocumentsFromTree(docIds);
+        setDocuments((prev) => removeSidebarDocumentRecords(prev, docIds));
         docIds.forEach((documentId) => emitDocumentsChanged(documentId));
         if (activeId && docIds.includes(activeId)) {
           router.push("/");
@@ -1944,6 +1994,13 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
           }
           return next;
         });
+        setDocuments((prev) =>
+          upsertSidebarDocumentRecord(
+            prev,
+            sidebarTreeNodeToDocumentRecord(nextNode, sidebarData.activeWorkspaceId || ""),
+          ),
+        );
+        emitDocumentsChanged(nextNode.id);
 
         const query = new URLSearchParams();
         if (nextNode.workspace_id) {
@@ -1961,7 +2018,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         creatingDocumentUnderParentRef.current.delete(creatingKey);
       }
     },
-    [router],
+    [router, sidebarData.activeWorkspaceId],
   );
 
   const handleRename = useCallback(
@@ -1980,14 +2037,17 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         window.alert(error instanceof Error ? error.message : "重命名失败，请稍后再试");
         return;
       }
-      await refreshTree();
+      setTree((prev) => renameDocumentInTree(prev, documentId, title.trim(), null));
+      setDocuments((prev) => renameSidebarDocumentRecord(prev, documentId, title.trim(), null));
+      emitDocumentsChanged(documentId);
     },
-    [refreshTree, sidebarData.activeWorkspaceId],
+    [sidebarData.activeWorkspaceId],
   );
 
   const handleMove = useCallback(
     async (documentId: string, parentId: string | null, index: number) => {
       setTree((prev) => moveLocalNode(prev, documentId, parentId, index));
+      setDocuments((prev) => moveSidebarDocumentRecord(prev, documentId, parentId, index));
       if (parentId) {
         setExpanded((prev) => new Set(prev).add(parentId));
       }
@@ -2002,7 +2062,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         await refreshTree();
         return;
       }
-      await refreshTree();
+      emitDocumentsChanged(documentId);
     },
     [moveLocalNode, refreshTree, setExpanded],
   );
@@ -2178,6 +2238,13 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
             });
             return next;
           });
+          setDocuments((prev) => {
+            let next = prev;
+            topLevelDocIds.forEach((id, offset) => {
+              next = moveSidebarDocumentRecord(next, id, documentTransferPlan.targetParentId, baseIndex + offset);
+            });
+            return next;
+          });
           setExpanded((prev) => new Set(prev).add(documentTransferPlan.targetParentId));
 
           try {
@@ -2243,6 +2310,7 @@ function SidebarContent({ initialData, sidebarData: externalSidebarData, sidebar
         workspaceId: sidebarData.activeWorkspaceId ?? null,
       });
       removeDocumentsFromTree([documentId]);
+      setDocuments((prev) => removeSidebarDocumentRecords(prev, [documentId]));
       emitDocumentsChanged(documentId);
       if (activeId === documentId) {
         router.push("/");
diff --git a/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.test.tsx b/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.test.tsx
index df33c3e4..b9ebb057 100644
--- a/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.test.tsx
+++ b/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.test.tsx
@@ -220,6 +220,62 @@ describe("usePreferredSidebarSnapshot", () => {
     });
   });
 
+  it("stream 与 query freshness 相同但内容不同时，应优先 query 避免资源行被旧 stream 压住", async () => {
+    const initialData = buildSidebarData([buildDocument({ title: "标题 A" })]);
+    const treeStreamData = buildSidebarData([
+      buildDocument({
+        title: "标题 B",
+        updated_at: "2026-04-21T00:00:01.000Z",
+      }),
+    ]);
+    const queryData = buildSidebarInitialData({
+      activeWorkspaceId: "ws-1",
+      workspaces: [],
+      documents: [
+        buildDocument({
+          title: "标题 B",
+          updated_at: "2026-04-21T00:00:01.000Z",
+        }),
+      ],
+      trashedDocuments: [],
+      mindmaps: [
+        {
+          mindmap_id: "mind-1",
+          document_id: "doc-1",
+          workspace_id: "ws-1",
+          created_at: "2026-04-21T00:00:01.000Z",
+          updated_at: "2026-04-21T00:00:01.000Z",
+        },
+      ],
+      mediaAssets: [],
+      trashedMediaAssets: [],
+      tables: [],
+    });
+
+    await act(async () => {
+      root.render(
+        <Harness
+          initialData={initialData}
+          sidebarQueryData={queryData}
+          treeStreamData={treeStreamData}
+          treeStreamStatus="live"
+          treeStreamCursor="cursor_stream_3"
+          onState={onState}
+        />,
+      );
+    });
+
+    expect(onState.mock.lastCall?.[0]).toMatchObject({
+      source: "query",
+      cursor: null,
+    });
+    expect(
+      (onState.mock.lastCall?.[0] as ReturnType<typeof usePreferredSidebarSnapshot>).data.kernelFileTreeProjection.items.some(
+        (item) => item.resourceMeta.assetId === "mind-1",
+      ),
+    ).toBe(true);
+  });
+
   it("tree stream 进入 fallback 后应回退到 query 快照", async () => {
     const initialData = buildSidebarData([buildDocument({ title: "标题 A" })]);
     const staleTreeStream = buildSidebarData([buildDocument({ title: "标题 A" })]);
diff --git a/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.ts b/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.ts
index 101087cb..295187d3 100644
--- a/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.ts
+++ b/wolai-frontend/src/components/sidebar/use-preferred-sidebar-snapshot.ts
@@ -44,6 +44,12 @@ export function usePreferredSidebarSnapshot(input: {
     treeStreamVersion >= preferredVersion;
 
   const source = useMemo<PreferredSidebarSnapshotSource>(() => {
+    if (
+      queryHasPreferredVersion &&
+      (!treeStreamHasPreferredVersion || querySyncKey !== treeStreamSyncKey)
+    ) {
+      return "query";
+    }
     if (treeStreamHasPreferredVersion) {
       return "tree_stream";
     }
@@ -53,7 +59,9 @@ export function usePreferredSidebarSnapshot(input: {
     return "initial";
   }, [
     queryHasPreferredVersion,
+    querySyncKey,
     treeStreamHasPreferredVersion,
+    treeStreamSyncKey,
   ]);
 
   const data =
diff --git a/wolai-frontend/src/hooks/use-sidebar-data.test.tsx b/wolai-frontend/src/hooks/use-sidebar-data.test.tsx
index a19a6e08..c625a826 100644
--- a/wolai-frontend/src/hooks/use-sidebar-data.test.tsx
+++ b/wolai-frontend/src/hooks/use-sidebar-data.test.tsx
@@ -123,8 +123,29 @@ describe("useSidebarData", () => {
     expect(secondState).toBe(firstState);
   });
 
-  it("Convex live 模式下手动 refetch 不应再走 HTTP snapshot 补偿链", async () => {
+  it("Convex live 模式下手动 refetch 应拉取 HTTP snapshot 补偿显式刷新", async () => {
     const initialData = buildInitialData();
+    const manualSnapshot: SidebarInitialData = {
+      ...buildInitialData(),
+      documents: [
+        {
+          access_scope: "private",
+          id: "doc-live",
+          workspace_id: "ws_1",
+          title: "显式刷新标题",
+          parent_id: null,
+          sort_order: 0,
+          is_starred: false,
+          is_template: false,
+          created_at: "2026-05-14T00:00:00.000Z",
+          updated_at: "2026-05-14T00:01:00.000Z",
+        },
+      ],
+    };
+    (global.fetch as unknown as ReturnType<typeof vi.fn>).mockResolvedValue({
+      ok: true,
+      json: async () => manualSnapshot,
+    });
 
     await act(async () => {
       root.render(<Harness initialData={initialData} onState={onState} />);
@@ -132,14 +153,22 @@ describe("useSidebarData", () => {
 
     const state = onState.mock.lastCall?.[0] as ReturnType<typeof useSidebarData>;
     stableRefetch.mockClear();
+    let refetchResult: unknown = null;
     await act(async () => {
-      await state.refetch();
+      refetchResult = await state.refetch();
     });
 
-    expect(global.fetch).not.toHaveBeenCalled();
+    expect(global.fetch).toHaveBeenCalledWith("/api/sidebar?workspaceId=ws_1", {
+      method: "GET",
+      credentials: "include",
+    });
     expect(stableRefetch).toHaveBeenCalledTimes(1);
+    expect(refetchResult).toStrictEqual(manualSnapshot);
+    await act(async () => {
+      root.render(<Harness initialData={initialData} onState={onState} />);
+    });
     const refreshedState = onState.mock.lastCall?.[0] as ReturnType<typeof useSidebarData>;
-    expect(refreshedState.data).toStrictEqual(initialData);
+    expect(refreshedState.data).toStrictEqual(manualSnapshot);
   });
 
   it("无 live 订阅且允许 HTTP fallback 时应继续走 HTTP refetch", async () => {
diff --git a/wolai-frontend/src/hooks/use-sidebar-data.ts b/wolai-frontend/src/hooks/use-sidebar-data.ts
index 344137db..e34ce8f5 100644
--- a/wolai-frontend/src/hooks/use-sidebar-data.ts
+++ b/wolai-frontend/src/hooks/use-sidebar-data.ts
@@ -1,6 +1,9 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { useQuery } from "@tanstack/react-query";
-import { buildSidebarDataSyncKey } from "@/components/sidebar/sidebar-sync";
+import {
+  buildSidebarDataSyncKey,
+  getSidebarDataFreshness,
+} from "@/components/sidebar/sidebar-sync";
 import type { SidebarInitialData } from "@/components/sidebar/types";
 import { useConvexSidebarData } from "@/hooks/use-convex-sidebar-data";
 
@@ -48,6 +51,10 @@ async function requestSidebarData(workspaceId: string): Promise<SidebarInitialDa
 export function useSidebarData(initialData: SidebarInitialData): SidebarDataResult {
   const workspaceId = initialData.activeWorkspaceId;
   const convexSidebar = useConvexSidebarData(workspaceId);
+  const [manualSnapshot, setManualSnapshot] = useState<{
+    workspaceId: string;
+    data: SidebarInitialData;
+  } | null>(null);
   const shouldUseHttpFallback =
     !convexSidebar.hasLiveSubscription && convexSidebar.canUseHttpFallback;
 
@@ -59,7 +66,28 @@ export function useSidebarData(initialData: SidebarInitialData): SidebarDataResu
     enabled: shouldUseHttpFallback,
   });
 
-  const baseLiveData = convexSidebar.data ?? httpQuery.data ?? initialData;
+  const baseLiveData = useMemo(() => {
+    const currentManualSnapshot = manualSnapshot?.workspaceId === workspaceId
+      ? manualSnapshot.data
+      : null;
+    const candidates = [
+      initialData,
+      httpQuery.data,
+      convexSidebar.data,
+      currentManualSnapshot,
+    ].filter((item): item is SidebarInitialData => Boolean(item));
+    return candidates.reduce((selected, candidate) => {
+      const selectedFreshness = getSidebarDataFreshness(selected);
+      const candidateFreshness = getSidebarDataFreshness(candidate);
+      return candidateFreshness >= selectedFreshness ? candidate : selected;
+    }, initialData);
+  }, [
+    convexSidebar.data,
+    httpQuery.data,
+    initialData,
+    manualSnapshot,
+    workspaceId,
+  ]);
   const liveData = baseLiveData;
   const isLoading =
     convexSidebar.hasLiveSubscription
@@ -93,7 +121,9 @@ export function useSidebarData(initialData: SidebarInitialData): SidebarDataResu
   const refetch = useCallback(async () => {
     if (convexSidebar.hasLiveSubscription) {
       await convexRefetchRef.current();
-      return liveDataRef.current;
+      const snapshot = await requestSidebarData(workspaceId);
+      setManualSnapshot({ workspaceId, data: snapshot });
+      return snapshot;
     }
     if (shouldUseHttpFallback) {
       return httpRefetchRef.current();