fix(ui): suppress redundant failure note when tool error note is shown (#21078)

packages/cli/src/ui/hooks/useGeminiStream.test.tsx

@@ -1050,9 +1050,9 @@ describe('useGeminiStream', () => {
     );
     expect(noteIndex).toBeGreaterThanOrEqual(0);
     expect(stopIndex).toBeGreaterThanOrEqual(0);
-    expect(failureHintIndex).toBeGreaterThanOrEqual(0);
+    // The failure hint should NOT be present if the suppressed error note was shown
+    expect(failureHintIndex).toBe(-1);
     expect(noteIndex).toBeLessThan(stopIndex);
-    expect(stopIndex).toBeLessThan(failureHintIndex);
   });
 
   it('should group multiple cancelled tool call responses into a single history entry', async () => {

packages/cli/src/ui/hooks/useGeminiStream.ts

@@ -596,7 +596,10 @@ export const useGeminiStream = (
       if (!isLowErrorVerbosity || config.getDebugMode()) {
         return;
       }
-      if (lowVerbosityFailureNoteShownRef.current) {
+      if (
+        lowVerbosityFailureNoteShownRef.current ||
+        suppressedToolErrorNoteShownRef.current
+      ) {
         return;
       }