Fixed TUI list selection bug

clients/tui/src/components/PromptsTab.tsx

@@ -35,7 +35,7 @@ export function PromptsTab({
   const { selectedIndex, firstVisible, setSelection } = useSelectableList(
     prompts.length,
     visibleCount,
-    { resetWhen: [prompts] },
+    { resetWhen: prompts },
   );
   const [error, setError] = useState<string | null>(null);
   const scrollViewRef = useRef<ScrollViewRef>(null);

clients/tui/src/components/ResourcesTab.tsx

@@ -69,7 +69,7 @@ export function ResourcesTab({
   const { selectedIndex, firstVisible, setSelection } = useSelectableList(
     totalCount,
     visibleCount,
-    { resetWhen: [resources] },
+    { resetWhen: resources },
   );
   const selectedItem = useMemo(
     () => allItems[selectedIndex] || null,

clients/tui/src/components/ToolsTab.tsx

@@ -30,7 +30,7 @@ export function ToolsTab({
   const { selectedIndex, firstVisible, setSelection } = useSelectableList(
     tools.length,
     visibleCount,
-    { resetWhen: [tools] },
+    { resetWhen: tools },
   );
   const [error] = useState<string | null>(null);
   const scrollViewRef = useRef<ScrollViewRef>(null);

clients/tui/src/hooks/useSelectableList.ts

@@ -11,8 +11,8 @@ function clampFirstVisible(
 }
 
 export interface UseSelectableListOptions {
-  /** When these change, reset selection to 0 (e.g. [tools] when switching servers) */
-  resetWhen?: unknown[];
+  /** When this reference changes, reset selection to 0 (e.g. tools list when switching servers) */
+  resetWhen?: unknown;
 }
 
 /**
@@ -38,9 +38,9 @@ export function useSelectableList(
     [visibleCount],
   );
 
-  // Reset when deps change (e.g. different server)
+  // Reset when the list reference changes (e.g. different server).
   useEffect(() => {
-    if (options?.resetWhen) {
+    if (options?.resetWhen !== undefined) {
       setSelectedIndex(0);
       setFirstVisible(0);
     }