fix: prevent resetting node state when toggle search mode but search input is empty

fix #217

src/components/SearchBar.tsx

@@ -48,7 +48,8 @@ export function SearchBar({ onSearch, onFocus, value }: Props) {
             configs.onChange({
               searchMode: newMode,
             })
-            onSearch(value, newMode)
+            // Skip search if no input to prevent resetting folder expansions
+            if (value) onSearch(value, newMode)
           }}
           aria-label={toggleButtonDescription}
         >

src/utils/VisibleNodesGenerator.ts

@@ -322,6 +322,7 @@ class FlattenLayer extends CompressLayer {
       this.expandedNodes.clear()
       if (restoreExpandedFolders) {
         this.backupExpandedNodes.forEach(path => this.expandedNodes.add(path))
+        this.backupExpandedNodes.clear()
       }
     }
   }