Optimize local folder file tree lazy loading

rust/crates/mnote-web/src/routes/gateway.rs

@@ -67,6 +67,7 @@ pub(crate) struct RootEntryQuery {
     workspace_id: Option<String>,
     source_kind: Option<String>,
     root_uri: Option<String>,
+    tree_view: Option<String>,
     restore_focus_row_id: Option<String>,
 }
 
@@ -294,6 +295,11 @@ pub async fn root_entry(
             .filter(|value| !value.is_empty())
             .is_none()
         && requested_page_id.is_none();
+    let requests_filetree_first = query
+        .tree_view
+        .as_deref()
+        .map(str::trim)
+        .is_some_and(|value| value == "filetree");
     let (
         workspace_id,
         workspace_projection,
@@ -312,7 +318,14 @@ pub async fn root_entry(
                 WebError::bad_request_code("local_folder_root_required", "缺少本地文件夹 rootUri")
             })?;
         ensure_local_workspace_read_access_with_state(&state, &context, root_uri)?;
-        let snapshot = load_local_folder_page_tree_snapshot(root_uri)?;
+        let snapshot = if requests_filetree_first {
+            crate::routes::local_folder_source::load_local_folder_file_tree_snapshot_with_reveal(
+                root_uri,
+                requested_page_id.as_deref(),
+            )?
+        } else {
+            load_local_folder_page_tree_snapshot(root_uri)?
+        };
         let workspace_id = snapshot
             .dataset
             .get("workspace")
@@ -339,8 +352,11 @@ pub async fn root_entry(
                 .first()
                 .map(|item| item.id.as_str()),
         );
-        let sidebar_tree_html =
-            render_local_sidebar_tree_html(root_uri, selected_active_page_id.as_deref())?;
+        let sidebar_tree_html = if requests_filetree_first {
+            String::new()
+        } else {
+            render_local_sidebar_tree_html(root_uri, selected_active_page_id.as_deref())?
+        };
         let restore_focus_row_id = query
             .restore_focus_row_id
             .as_deref()
@@ -2755,8 +2771,9 @@ mod tests {
         let html = String::from_utf8(body.to_vec()).expect("utf8");
         assert!(html.contains(r#"data-mnote-shell="workspace""#));
         assert!(html.contains("local_folder"));
-        assert!(html.contains("Local Root"));
+        assert!(html.contains("README.md"));
         assert!(html.contains(r#"data-row-id="local:folder:docs""#));
+        assert!(!html.contains(r#"data-row-id="local:markdown:docs/child.md""#));
         assert!(html.contains(r#"data-row-id="local:asset:plain.txt""#));
         assert!(!html.contains("legacy_next_compat_disabled"));
         assert!(!html.contains(r#"href="/tree"#));
@@ -2798,7 +2815,8 @@ mod tests {
             .expect("body");
         let html = String::from_utf8(body.to_vec()).expect("utf8");
         assert!(html.contains(r#"data-mnote-shell="workspace""#));
-        assert!(html.contains(r#"data-row-id="local:asset:attachments/report-a.pdf""#));
+        assert!(html.contains(r#"data-row-id="local:folder:attachments""#));
+        assert!(!html.contains(r#"data-row-id="local:asset:attachments/report-a.pdf""#));
         assert!(html.contains(r#"data-testid="mnote-document-workspace""#));
         assert!(html.contains(r#"data-mnote-resource-tab-host="true""#));
         assert!(html.contains("__MNOTE_DOCUMENT_PANES_BOOTSTRAP__"));