fix: stabilize local folder AI document workflow

- scope local-folder PageTree revision and document sidebar rendering to fileTreeScope

- preserve projected table/image attrs for local Markdown aggregate fallback

- avoid FileTree restore forced layouts on cold design open

- add API ChatOnly provider runtime and local OCR task handling regressions

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

@@ -11,8 +11,8 @@ use crate::routes::gateway::default_workspace_name_for_context;
 use crate::routes::local_folder_source::{
     ensure_local_workspace_read_access_with_state, is_local_access_policy_admin_context,
     load_local_folder_file_tree_children_snapshot,
-    load_local_folder_file_tree_snapshot_with_reveal, load_local_folder_page_tree_snapshot,
-    resolve_local_markdown_page_aggregate,
+    load_local_folder_file_tree_snapshot_with_reveal, load_local_folder_page_tree_scope_snapshot,
+    load_local_folder_page_tree_snapshot, resolve_local_markdown_page_aggregate,
 };
 use crate::routes::query_support::execute_runtime_query_against_data;
 use crate::routes::snapshot_support::{
@@ -215,7 +215,8 @@ pub async fn document_page_shell(
     let (sidebar_tree_html, file_tree_html) = if is_local_folder {
         let root_uri = query.root_uri.as_deref().unwrap_or_default();
         (
-            render_local_sidebar_tree_html(root_uri, Some(&document_id)).unwrap_or_default(),
+            render_local_sidebar_tree_html_scoped(root_uri, Some(&document_id), file_tree_scope)
+                .unwrap_or_default(),
             render_local_file_tree_html_scoped(root_uri, Some(&document_id), None, file_tree_scope)
                 .unwrap_or_default(),
         )
@@ -2659,7 +2660,22 @@ pub(crate) fn render_local_sidebar_tree_html(
     root_uri: &str,
     active_document_id: Option<&str>,
 ) -> Result<String, WebError> {
-    let snapshot = load_local_folder_page_tree_snapshot(root_uri)?;
+    render_local_sidebar_tree_html_scoped(root_uri, active_document_id, None)
+}
+
+pub(crate) fn render_local_sidebar_tree_html_scoped(
+    root_uri: &str,
+    active_document_id: Option<&str>,
+    file_tree_scope: Option<&str>,
+) -> Result<String, WebError> {
+    let snapshot = if let Some(scope) = file_tree_scope
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+    {
+        load_local_folder_page_tree_scope_snapshot(root_uri, scope)?
+    } else {
+        load_local_folder_page_tree_snapshot(root_uri)?
+    };
     Ok(render_local_sidebar_tree_html_from_snapshot(
         &snapshot,
         active_document_id,
@@ -4277,6 +4293,51 @@ mod tests {
         ));
     }
 
+    #[tokio::test]
+    async fn document_shell_local_folder_filetree_scope_renders_scoped_page_tree() {
+        let root = std::env::temp_dir().join(format!(
+            "mnote-local-document-shell-scoped-{}",
+            std::process::id()
+        ));
+        let _ = std::fs::remove_dir_all(&root);
+        std::fs::create_dir_all(root.join("design").join("done")).expect("create design done");
+        std::fs::write(root.join("Home.md"), "# Home\n").expect("write home");
+        std::fs::write(
+            root.join("design").join("done").join("Target.md"),
+            "# Target\n",
+        )
+        .expect("write target");
+
+        let root_uri = format!("file://{}", root.display());
+        init_local_workspace(&root, "user_test");
+        let response = app()
+            .oneshot(
+                Request::builder()
+                    .uri(format!(
+                        "/documents/local-md:design~2Fdone~2FTarget.md?sourceKind=local_folder&rootUri={root_uri}&treeView=filetree&fileTreeScope=design"
+                    ))
+                    .header("x-mnote-actor-id", "user_test")
+                    .header("x-mnote-actor-type", "user")
+                    .body(Body::empty())
+                    .expect("request"),
+            )
+            .await
+            .expect("response");
+
+        let _ = std::fs::remove_dir_all(&root);
+
+        assert_eq!(response.status(), StatusCode::OK);
+        let body = to_bytes(response.into_body(), usize::MAX)
+            .await
+            .expect("body");
+        let html = String::from_utf8(body.to_vec()).expect("html");
+        assert!(html.contains(r#"data-node-id="local-md:design~2Fdone~2FTarget.md""#));
+        assert!(
+            !html.contains(r#"data-node-id="local-md:Home.md""#),
+            "文档页带 fileTreeScope 时 PageTree 不应回退到 workspace root 全量扫描"
+        );
+    }
+
     #[test]
     fn document_conflict_panel_runtime_contains_dom_helpers() {
         const DOCUMENT_CONFLICT_PANEL_RUNTIME_JS: &str =