diff --git a/design/03-rust-web/process/3-20-browser-runtime-followup-checklist-v1.md b/design/03-rust-web/process/3-20-browser-runtime-followup-checklist-v1.md
index 3bdd5092..6879b257 100644
--- a/design/03-rust-web/process/3-20-browser-runtime-followup-checklist-v1.md
+++ b/design/03-rust-web/process/3-20-browser-runtime-followup-checklist-v1.md
@@ -147,3 +147,10 @@ UI / 浏览器可见项必须有真实浏览器截图或结构化 smoke 证据
 - 2026-05-25：Batch L Worker B `reasonix-2026-05-24T19-30-30-509Z-18f62949` 只读审计 `refreshLocalFolderSidebarSnapshot`；Codex 已读取 Hindsight recall、`process-handoff.md/json`、`result.json`，并核对 worktree diff 为空。
   - 审计结论：`refreshLocalFolderSidebarSnapshot` 仍是 shell 编排，包含 workspace/root/document 状态、两条 projection fetch、render 后副作用和 watcher 标记，不应整体迁入 `filetree-runtime.js`。
   - 下一刀建议：优先迁投影数据读取器层（如 `readProjection`、`readDatasetProjection`、`projectionItems`、row/id/title/file accessor、`groupRowsByParent`），或更保守地先迁未使用的 `replaceSidebarTreeFromDocument`；Codex 本轮不直接实现 3-20 代码，只记录候选。
+- 2026-05-25：Batch M 按用户纠正尝试并行派发 3 个 Reasonix 实现 worker，均使用独立 worktree；run `reasonix-2026-05-24T19-40-19-862Z-b3029108` / `reasonix-2026-05-24T19-40-19-873Z-4347ed16` 仅有 `prompt.md`、`memory-recall.json`、`reasonix-transcript.jsonl`，无 `final.md`、`result.json`、`process-handoff.md/json`，不采纳。
+  - 失败原因：Reasonix ACP 并发串线，Worker C transcript 将 B/C/D 三个任务混为一个选择题并要求人工选择；不满足本文件 handoff 合同。
+  - 主控处置：不从 Batch M 合入任何 diff；改用 Batch N 的独立 worktree 子 agent worker 继续推进，仍由 Codex 复核 diff 和验证。
+- 2026-05-25：Batch N 已启动 2 个 3-20 独立 worktree worker：Worker C `/mnt/Data1T/mnote-worktrees/0525-n-worker-c-3-20-projection-helpers` 负责 filetree projection data helper 外置；Worker D `/mnt/Data1T/mnote-worktrees/0525-n-worker-d-3-20-task435-smoke-assertion` 负责 `task435` local-folder watch projection 断言。Codex 已复核两个 worktree diff 并选择性移植。
+  - Worker C：`filetree-runtime.js` 新增并导出 `readProjection`、`readSidebarDataset`、`readDatasetProjection`、`projectionItems`、`hasProjectionItems`、`nodeIdOf`、`rowIdOf`、`parentIdOf`、`titleOf`、`fileWorkspaceRelativePath`、`groupRowsByParent`；`layout.rs` 对应 inline fallback 优先委托 `fileTreeRuntimeFunction(...)`，未迁 `refreshLocalFolderSidebarSnapshot` / `startLocalFolderSidebarWatch` / fetch / post-render shell 副作用 / HTML renderer。
+  - Worker D：`task435-local-folder-watch-no-reload-smoke.js` 新增 `waitForLocalFolderWatchProjectionApplied`，每个外部文件变化步骤前清理旧标记，步骤内显式等待 `data-mnote-local-folder-watch-applied="projection"`，未放宽 no-reload 断言；Codex 同步把初始 `Stable Page` 等待修正为当前 file tree 标题 `stable`。
+  - 已验证：`node --check rust/crates/mnote-web/browser/filetree-runtime.js`、`node --check scripts/task435-local-folder-watch-no-reload-smoke.js`、`cargo fmt --manifest-path rust/Cargo.toml --all --check`、`cargo check --manifest-path rust/Cargo.toml -p mnote-web`、`cargo test --manifest-path rust/Cargo.toml -p mnote-web filetree_runtime_contains_row_accessor_helpers -- --test-threads=1`、`cargo test --manifest-path rust/Cargo.toml -p mnote-web sidebar_filetree_runtime_helpers_are_externalized_with_inline_fallback -- --test-threads=1`、`cargo test --manifest-path rust/Cargo.toml -p mnote-web sidebar_tree_runtime_polls_local_folder_without_browser_reload -- --test-threads=1`、`MNOTE_WEB_SMOKE_BASE_URL=http://127.0.0.1:3001 NODE_PATH=/mnt/Data1T/mnote/node_modules node scripts/task435-local-folder-watch-no-reload-smoke.js`、`MNOTE_WEB_SMOKE_BASE_URL=http://127.0.0.1:3001 NODE_PATH=/mnt/Data1T/mnote/node_modules node scripts/task479-local-folder-markdown-resource-lifecycle-smoke.js`。
diff --git a/rust/crates/mnote-web/browser/filetree-runtime.js b/rust/crates/mnote-web/browser/filetree-runtime.js
index 5695d578..5b86993d 100644
--- a/rust/crates/mnote-web/browser/filetree-runtime.js
+++ b/rust/crates/mnote-web/browser/filetree-runtime.js
@@ -137,6 +137,83 @@ function defaultObjectIdentityAttr(identity) {
   }
 }
 
+function readProjection(value) {
+  if (!value || typeof value !== 'object') return null;
+  if (value.result && typeof value.result === 'object') return value.result;
+  if (value.snapshot && value.snapshot.tree) return value.snapshot.tree;
+  if (value.data && value.data.tree) return value.data.tree;
+  if (value.tree && typeof value.tree === 'object') return value.tree;
+  return value;
+}
+
+function readSidebarDataset(value) {
+  if (!value || typeof value !== 'object') return null;
+  if (value.snapshot && value.snapshot.dataset && typeof value.snapshot.dataset === 'object') return value.snapshot.dataset;
+  if (value.data && value.data.dataset && typeof value.data.dataset === 'object') return value.data.dataset;
+  if (value.dataset && typeof value.dataset === 'object') return value.dataset;
+  if (value.sidebar && typeof value.sidebar === 'object') return value.sidebar;
+  return null;
+}
+
+function readDatasetProjection(value, snakeCaseKey, camelCaseKey) {
+  var dataset = readSidebarDataset(value);
+  if (!dataset || typeof dataset !== 'object') return null;
+  if (dataset[snakeCaseKey] && typeof dataset[snakeCaseKey] === 'object') return dataset[snakeCaseKey];
+  if (dataset[camelCaseKey] && typeof dataset[camelCaseKey] === 'object') return dataset[camelCaseKey];
+  return null;
+}
+
+function projectionItems(projection) {
+  var resolved = readProjection(projection);
+  return resolved && Array.isArray(resolved.items) ? resolved.items : [];
+}
+
+function hasProjectionItems(projection) {
+  var resolved = readProjection(projection);
+  return Boolean(resolved && Array.isArray(resolved.items));
+}
+
+function nodeIdOf(item) {
+  return String(item && (item.nodeId || item.id || item.documentId) || '').trim();
+}
+
+function rowIdOf(item) {
+  return String(item && (item.rowId || item.nodeId || item.id) || '').trim();
+}
+
+function parentIdOf(item) {
+  return String(item && (item.parentNodeId || item.parentId || '') || '').trim();
+}
+
+function titleOf(item) {
+  return String(item && item.title || '无标题').trim() || '无标题';
+}
+
+function fileWorkspaceRelativePath(item) {
+  var meta = item && item.resourceMeta && typeof item.resourceMeta === 'object' ? item.resourceMeta : {};
+  var workspacePath = meta.workspacePath && typeof meta.workspacePath === 'object' ? meta.workspacePath : {};
+  var fromWorkspacePath = String(workspacePath.relativePath || '').trim();
+  if (fromWorkspacePath) return fromWorkspacePath;
+  var extra = meta.extra && typeof meta.extra === 'object' ? meta.extra : {};
+  var source = extra.source && typeof extra.source === 'object' ? extra.source : {};
+  var fromSource = String(source.relativePath || '').trim();
+  if (fromSource) return fromSource;
+  return String(item && (item.relativePath || item.rootRelativePath) || '').trim();
+}
+
+function groupRowsByParent(rows) {
+  rows = Array.isArray(rows) ? rows : [];
+  var ids = new Set(rows.map(nodeIdOf).filter(Boolean));
+  var grouped = new Map();
+  rows.forEach(function(item) {
+    var parentId = parentIdOf(item);
+    if (!ids.has(parentId)) parentId = '';
+    if (!grouped.has(parentId)) grouped.set(parentId, []);
+    grouped.get(parentId).push(item);
+  });
+  return grouped;
+}
+
 function revealFileTreeRow(row) {
   if (!(row instanceof HTMLElement)) return;
   var node = row.closest('.tree-node');
@@ -263,6 +340,17 @@ function fileTreeUploadTargetFallback(detail, deps) {
 }
 
 window.__mnoteFileTreeRuntime = {
+  readProjection: readProjection,
+  readSidebarDataset: readSidebarDataset,
+  readDatasetProjection: readDatasetProjection,
+  projectionItems: projectionItems,
+  hasProjectionItems: hasProjectionItems,
+  nodeIdOf: nodeIdOf,
+  rowIdOf: rowIdOf,
+  parentIdOf: parentIdOf,
+  titleOf: titleOf,
+  fileWorkspaceRelativePath: fileWorkspaceRelativePath,
+  groupRowsByParent: groupRowsByParent,
   fileTreeRowKind: fileTreeRowKind,
   fileTreeRowDocumentId: fileTreeRowDocumentId,
   fileTreeRowAssetId: fileTreeRowAssetId,
diff --git a/rust/crates/mnote-web/src/ssr/pages/layout.rs b/rust/crates/mnote-web/src/ssr/pages/layout.rs
index 56d04ec6..192cb864 100644
--- a/rust/crates/mnote-web/src/ssr/pages/layout.rs
+++ b/rust/crates/mnote-web/src/ssr/pages/layout.rs
@@ -2142,6 +2142,8 @@ const SIDEBAR_TREE_JS: &str = r##"
   }
 
   function readProjection(value) {
+    var runtimeFn = fileTreeRuntimeFunction('readProjection');
+    if (runtimeFn) return runtimeFn(value);
     if (!value || typeof value !== 'object') return null;
     if (value.result && typeof value.result === 'object') return value.result;
     if (value.snapshot && value.snapshot.tree) return value.snapshot.tree;
@@ -2151,6 +2153,8 @@ const SIDEBAR_TREE_JS: &str = r##"
   }
 
   function readSidebarDataset(value) {
+    var runtimeFn = fileTreeRuntimeFunction('readSidebarDataset');
+    if (runtimeFn) return runtimeFn(value);
     if (!value || typeof value !== 'object') return null;
     if (value.snapshot && value.snapshot.dataset && typeof value.snapshot.dataset === 'object') return value.snapshot.dataset;
     if (value.data && value.data.dataset && typeof value.data.dataset === 'object') return value.data.dataset;
@@ -2160,6 +2164,8 @@ const SIDEBAR_TREE_JS: &str = r##"
   }
 
   function readDatasetProjection(value, snakeCaseKey, camelCaseKey) {
+    var runtimeFn = fileTreeRuntimeFunction('readDatasetProjection');
+    if (runtimeFn) return runtimeFn(value, snakeCaseKey, camelCaseKey);
     var dataset = readSidebarDataset(value);
     if (!dataset || typeof dataset !== 'object') return null;
     if (dataset[snakeCaseKey] && typeof dataset[snakeCaseKey] === 'object') return dataset[snakeCaseKey];
@@ -2172,32 +2178,46 @@ const SIDEBAR_TREE_JS: &str = r##"
   }
 
   function projectionItems(projection) {
+    var runtimeFn = fileTreeRuntimeFunction('projectionItems');
+    if (runtimeFn) return runtimeFn(projection);
     var resolved = readProjection(projection);
     return resolved && Array.isArray(resolved.items) ? resolved.items : [];
   }
 
   function hasProjectionItems(projection) {
+    var runtimeFn = fileTreeRuntimeFunction('hasProjectionItems');
+    if (runtimeFn) return runtimeFn(projection);
     var resolved = readProjection(projection);
     return Boolean(resolved && Array.isArray(resolved.items));
   }
 
   function nodeIdOf(item) {
+    var runtimeFn = fileTreeRuntimeFunction('nodeIdOf');
+    if (runtimeFn) return runtimeFn(item);
     return String(item && (item.nodeId || item.id || item.documentId) || '').trim();
   }
 
   function rowIdOf(item) {
+    var runtimeFn = fileTreeRuntimeFunction('rowIdOf');
+    if (runtimeFn) return runtimeFn(item);
     return String(item && (item.rowId || item.nodeId || item.id) || '').trim();
   }
 
   function parentIdOf(item) {
+    var runtimeFn = fileTreeRuntimeFunction('parentIdOf');
+    if (runtimeFn) return runtimeFn(item);
     return String(item && (item.parentNodeId || item.parentId || '') || '').trim();
   }
 
   function titleOf(item) {
+    var runtimeFn = fileTreeRuntimeFunction('titleOf');
+    if (runtimeFn) return runtimeFn(item);
     return String(item && item.title || '无标题').trim() || '无标题';
   }
 
   function fileWorkspaceRelativePath(item) {
+    var runtimeFn = fileTreeRuntimeFunction('fileWorkspaceRelativePath');
+    if (runtimeFn) return runtimeFn(item);
     var meta = item && item.resourceMeta && typeof item.resourceMeta === 'object' ? item.resourceMeta : {};
     var workspacePath = meta.workspacePath && typeof meta.workspacePath === 'object' ? meta.workspacePath : {};
     var fromWorkspacePath = String(workspacePath.relativePath || '').trim();
@@ -2210,6 +2230,8 @@ const SIDEBAR_TREE_JS: &str = r##"
   }
 
   function groupRowsByParent(rows) {
+    var runtimeFn = fileTreeRuntimeFunction('groupRowsByParent');
+    if (runtimeFn) return runtimeFn(rows);
     var ids = new Set(rows.map(nodeIdOf).filter(Boolean));
     var grouped = new Map();
     rows.forEach(function(item) {
@@ -11054,6 +11076,17 @@ mod tests {
         assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('revealFileTreeAssetRow')"));
         assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('appendUploadedAssetRow')"));
         assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('fileTreeUploadTargetFallback')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('readProjection')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('readSidebarDataset')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('readDatasetProjection')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('projectionItems')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('hasProjectionItems')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('nodeIdOf')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('rowIdOf')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('parentIdOf')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('titleOf')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('fileWorkspaceRelativePath')"));
+        assert!(SIDEBAR_TREE_JS.contains("fileTreeRuntimeFunction('groupRowsByParent')"));
         let document_id_body = js_function_body(SIDEBAR_TREE_JS, "fileTreeRowDocumentId");
         assert!(
             document_id_body.contains("data-document-id")
@@ -11077,7 +11110,19 @@ mod tests {
         assert!(FILETREE_RUNTIME_JS.contains("function revealFileTreeAssetRow"));
         assert!(FILETREE_RUNTIME_JS.contains("function appendUploadedAssetRow"));
         assert!(FILETREE_RUNTIME_JS.contains("function fileTreeUploadTargetFallback"));
+        assert!(FILETREE_RUNTIME_JS.contains("function readProjection"));
+        assert!(FILETREE_RUNTIME_JS.contains("function readSidebarDataset"));
+        assert!(FILETREE_RUNTIME_JS.contains("function readDatasetProjection"));
+        assert!(FILETREE_RUNTIME_JS.contains("function projectionItems"));
+        assert!(FILETREE_RUNTIME_JS.contains("function hasProjectionItems"));
+        assert!(FILETREE_RUNTIME_JS.contains("function nodeIdOf"));
+        assert!(FILETREE_RUNTIME_JS.contains("function rowIdOf"));
+        assert!(FILETREE_RUNTIME_JS.contains("function parentIdOf"));
+        assert!(FILETREE_RUNTIME_JS.contains("function titleOf"));
+        assert!(FILETREE_RUNTIME_JS.contains("function fileWorkspaceRelativePath"));
+        assert!(FILETREE_RUNTIME_JS.contains("function groupRowsByParent"));
         assert!(FILETREE_RUNTIME_JS.contains("appendUploadedAssetRow: appendUploadedAssetRow"));
+        assert!(FILETREE_RUNTIME_JS.contains("groupRowsByParent: groupRowsByParent"));
         assert!(FILETREE_RUNTIME_JS
             .contains("uploadIntent: String(detail.uploadIntent || 'filetree.folder.drop')"));
         assert!(FILETREE_RUNTIME_JS
diff --git a/scripts/task435-local-folder-watch-no-reload-smoke.js b/scripts/task435-local-folder-watch-no-reload-smoke.js
index f1ab0dc6..a1e1e9b7 100644
--- a/scripts/task435-local-folder-watch-no-reload-smoke.js
+++ b/scripts/task435-local-folder-watch-no-reload-smoke.js
@@ -106,8 +106,25 @@ async function waitForPageTreeNodeGone(page, documentId) {
   );
 }
 
-async function runStep(label, navigationEvents, action) {
+async function waitForLocalFolderWatchProjectionApplied(page) {
+  await page.waitForFunction(
+    () => document.documentElement.getAttribute("data-mnote-local-folder-watch-applied") === "projection",
+    { timeout: UI_TIMEOUT_MS },
+  );
+  const appliedValue = await page.evaluate(
+    () => document.documentElement.getAttribute("data-mnote-local-folder-watch-applied"),
+  );
+  assert(
+    appliedValue === "projection",
+    `local_folder watch 应通过 projection 应用，实际 data-mnote-local-folder-watch-applied=${appliedValue}`,
+  );
+}
+
+async function runStep(page, label, navigationEvents, action) {
   const before = navigationEvents.length;
+  await page.evaluate(() => {
+    document.documentElement.removeAttribute("data-mnote-local-folder-watch-applied");
+  });
   await action();
   const after = navigationEvents.length;
   assert(after === before, `${label} 不应触发浏览器导航或 reload，before=${before} after=${after}`);
@@ -147,30 +164,33 @@ async function run() {
     await quickLogin(page);
     await page.goto(treeUrl(root, "page"), { waitUntil: "domcontentloaded", timeout: UI_TIMEOUT_MS });
     await waitForVisibleText(page, "Local Root");
-    await waitForVisibleText(page, "Stable Page");
+    await waitForVisibleText(page, "stable");
     await page.waitForResponse((response) => response.url().includes("/api/tree/local-folder-watch") && response.ok(), {
       timeout: UI_TIMEOUT_MS,
     }).catch(() => {});
     await page.waitForTimeout(100);
     navigationEvents.length = 0;
 
-    steps.push(await runStep("Markdown 外部创建后 page tree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "Markdown 外部创建后 page tree 原地更新", navigationEvents, async () => {
       fs.writeFileSync(path.join(root, "docs", "watcher-create.md"), "# Watcher Create\n", "utf8");
       await waitForPageTreeNode(page, localMdDocumentId("docs/watcher-create.md"));
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("Markdown 外部重命名后 page tree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "Markdown 外部重命名后 page tree 原地更新", navigationEvents, async () => {
       fs.renameSync(
         path.join(root, "docs", "watcher-create.md"),
         path.join(root, "docs", "watcher-renamed.md"),
       );
       await waitForPageTreeNode(page, localMdDocumentId("docs/watcher-renamed.md"));
       await waitForPageTreeNodeGone(page, localMdDocumentId("docs/watcher-create.md"));
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("Markdown 外部删除后 page tree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "Markdown 外部删除后 page tree 原地更新", navigationEvents, async () => {
       fs.rmSync(path.join(root, "docs", "watcher-renamed.md"));
       await waitForPageTreeNodeGone(page, localMdDocumentId("docs/watcher-renamed.md"));
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
     await page.goto(treeUrl(root, "filetree"), { waitUntil: "domcontentloaded", timeout: UI_TIMEOUT_MS });
@@ -182,61 +202,70 @@ async function run() {
     await page.waitForTimeout(100);
     navigationEvents.length = 0;
 
-    steps.push(await runStep("Markdown 外部创建后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "Markdown 外部创建后 filetree 原地更新", navigationEvents, async () => {
       fs.writeFileSync(path.join(root, "docs", "watcher-filetree-md.md"), "# Watcher Filetree Markdown\n", "utf8");
       await waitForFileTreeRow(page, "local:markdown:docs/watcher-filetree-md.md");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("Markdown 外部重命名后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "Markdown 外部重命名后 filetree 原地更新", navigationEvents, async () => {
       fs.renameSync(
         path.join(root, "docs", "watcher-filetree-md.md"),
         path.join(root, "docs", "watcher-filetree-md-renamed.md"),
       );
       await waitForFileTreeRow(page, "local:markdown:docs/watcher-filetree-md-renamed.md");
       await waitForFileTreeRowGone(page, "local:markdown:docs/watcher-filetree-md.md");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("Markdown 外部删除后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "Markdown 外部删除后 filetree 原地更新", navigationEvents, async () => {
       fs.rmSync(path.join(root, "docs", "watcher-filetree-md-renamed.md"));
       await waitForFileTreeRowGone(page, "local:markdown:docs/watcher-filetree-md-renamed.md");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("非 md 资源外部创建后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "非 md 资源外部创建后 filetree 原地更新", navigationEvents, async () => {
       fs.writeFileSync(path.join(root, "docs", "watcher-asset.txt"), "watcher asset", "utf8");
       await waitForFileTreeRow(page, "local:asset:docs/watcher-asset.txt");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("非 md 资源外部重命名后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "非 md 资源外部重命名后 filetree 原地更新", navigationEvents, async () => {
       fs.renameSync(
         path.join(root, "docs", "watcher-asset.txt"),
         path.join(root, "docs", "watcher-asset-renamed.txt"),
       );
       await waitForFileTreeRow(page, "local:asset:docs/watcher-asset-renamed.txt");
       await waitForFileTreeRowGone(page, "local:asset:docs/watcher-asset.txt");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("非 md 资源外部删除后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "非 md 资源外部删除后 filetree 原地更新", navigationEvents, async () => {
       fs.rmSync(path.join(root, "docs", "watcher-asset-renamed.txt"));
       await waitForFileTreeRowGone(page, "local:asset:docs/watcher-asset-renamed.txt");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("第二类非 md 资源外部创建后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "第二类非 md 资源外部创建后 filetree 原地更新", navigationEvents, async () => {
       fs.writeFileSync(path.join(root, "docs", "watcher-image.png"), "png", "utf8");
       await waitForFileTreeRow(page, "local:asset:docs/watcher-image.png");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("第二类非 md 资源外部重命名后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "第二类非 md 资源外部重命名后 filetree 原地更新", navigationEvents, async () => {
       fs.renameSync(
         path.join(root, "docs", "watcher-image.png"),
         path.join(root, "docs", "watcher-image-renamed.png"),
       );
       await waitForFileTreeRow(page, "local:asset:docs/watcher-image-renamed.png");
       await waitForFileTreeRowGone(page, "local:asset:docs/watcher-image.png");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
-    steps.push(await runStep("第二类非 md 资源外部删除后 filetree 原地更新", navigationEvents, async () => {
+    steps.push(await runStep(page, "第二类非 md 资源外部删除后 filetree 原地更新", navigationEvents, async () => {
       fs.rmSync(path.join(root, "docs", "watcher-image-renamed.png"));
       await waitForFileTreeRowGone(page, "local:asset:docs/watcher-image-renamed.png");
+      await waitForLocalFolderWatchProjectionApplied(page);
     }));
 
     const result = {