fix(app): handle CancelledError from cancelled provider usage queries (#1885)

Move canFetch guard before first await so disabled refresh bails out synchronously instead of entering async path. Add .catch() swallow for fire-and-forget call to prevent unhandled promise rejections when react-query cancels pending queries during rapid tooltip open/close cycles.

packages/app/src/components/context-window-meter.tsx

@@ -117,7 +117,7 @@ export function ContextWindowMeter({
     (nextOpen: boolean) => {
       setIsTooltipOpen(nextOpen);
       if (nextOpen) {
-        void refreshProviderUsage();
+        void refreshProviderUsage().catch(() => {});
       }
     },
     [refreshProviderUsage],

packages/app/src/provider-usage/use-provider-usage.ts

@@ -58,10 +58,8 @@ export function useProviderUsage(
   });
 
   const refresh = useCallback(async () => {
+    if (!canFetch) return;
     await queryClient.invalidateQueries({ queryKey });
-    if (!canFetch) {
-      return;
-    }
     await queryClient.fetchQuery({
       queryKey,
       queryFn,