Fix message too large issue. (#19499)

packages/core/src/agents/local-executor.ts

@@ -689,6 +689,13 @@ export class LocalAgentExecutor<TOutput extends z.ZodTypeAny> {
         chat.setHistory(newHistory);
         this.hasFailedCompressionAttempt = false;
       }
+    } else if (info.compressionStatus === CompressionStatus.CONTENT_TRUNCATED) {
+      if (newHistory) {
+        chat.setHistory(newHistory);
+        // Do NOT reset hasFailedCompressionAttempt.
+        // We only truncated content because summarization previously failed.
+        // We want to keep avoiding expensive summarization calls.
+      }
     }
   }