fix: make file tree loading more reliable

Avoid gitignore filtering during folder browsing
Show folder load errors instead of empty folders
Add timeout fallback for gitignore checks

packages/ui/src/components/layout/SidebarFilesTree.tsx

@@ -419,14 +419,13 @@ export const SidebarFilesTree: React.FC = () => {
     inFlightDirsRef.current = new Set(inFlightDirsRef.current);
     inFlightDirsRef.current.add(normalizedDir);
 
-    const respectGitignore = !showGitignored;
     const listPromise = files.listDirectory
-      ? files.listDirectory(normalizedDir, { respectGitignore }).then((result) => result.entries.map((entry) => ({
+      ? files.listDirectory(normalizedDir).then((result) => result.entries.map((entry) => ({
         name: entry.name,
         path: entry.path,
         isDirectory: entry.isDirectory,
       })))
-      : opencodeClient.listLocalDirectory(normalizedDir, { respectGitignore }).then((result) => result.map((entry) => ({
+      : opencodeClient.listLocalDirectory(normalizedDir).then((result) => result.map((entry) => ({
         name: entry.name,
         path: entry.path,
         isDirectory: entry.isDirectory,
@@ -458,7 +457,7 @@ export const SidebarFilesTree: React.FC = () => {
         inFlightDirsRef.current = new Set(inFlightDirsRef.current);
         inFlightDirsRef.current.delete(normalizedDir);
       });
-  }, [files, mapDirectoryEntries, showGitignored]);
+  }, [files, mapDirectoryEntries]);
 
   const refreshRoot = React.useCallback(async () => {
     if (!root) return;
@@ -809,6 +808,15 @@ export const SidebarFilesTree: React.FC = () => {
           />
           {isDir && isExpanded && (
             <ul className="flex flex-col gap-1 ml-3 pl-3 border-l border-border/40 relative">
+              {loadErrorsByDir[node.path] ? (
+                <li className="flex items-center gap-2 px-2 py-1 typography-meta text-muted-foreground">
+                  <span className="min-w-0 flex-1 truncate text-[var(--status-error)]" title={loadErrorsByDir[node.path]}>{loadErrorsByDir[node.path]}</span>
+                  <Button variant="ghost" size="xs" className="h-6 gap-1" onClick={() => void refreshDirectory(node.path)}>
+                    <Icon name="refresh" className="h-3.5 w-3.5" />
+                    {t('sidebarFilesTree.actions.refreshTitle')}
+                  </Button>
+                </li>
+              ) : null}
               {renderTree(node.path, depth + 1)}
             </ul>
           )}