fix(quality): Retry invalid stream only 1 time (#9169)

packages/core/src/core/geminiChat.test.ts

@@ -891,11 +891,11 @@ describe('GeminiChat', () => {
         }
       }).rejects.toThrow(InvalidStreamError);
 
-      // Should be called 3 times (initial + 2 retries)
+      // Should be called 2 times (initial + 1 retry)
       expect(mockContentGenerator.generateContentStream).toHaveBeenCalledTimes(
-        3,
+        2,
       );
-      expect(mockLogContentRetry).toHaveBeenCalledTimes(2);
+      expect(mockLogContentRetry).toHaveBeenCalledTimes(1);
       expect(mockLogContentRetryFailure).toHaveBeenCalledTimes(1);
 
       // History should be clean, as if the failed turn never happened.

packages/core/src/core/geminiChat.ts

@@ -63,7 +63,7 @@ interface ContentRetryOptions {
 }
 
 const INVALID_CONTENT_RETRY_OPTIONS: ContentRetryOptions = {
-  maxAttempts: 3, // 1 initial call + 2 retries
+  maxAttempts: 2, // 1 initial call + 1 retry
   initialDelayMs: 500,
 };