refactor(core): move truncation logic from scheduler to shell tool

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

- Extract truncateAndSaveToFile to utils/truncation.ts with tests

- Move truncation handling from CoreToolScheduler to ShellTool

- Remove outputFile field from ToolCallResponseInfo and display types

- Add line limit constraint alongside character threshold for truncation

This improves separation of concerns by handling output truncation at the tool level where the output is generated, rather than centrally in the scheduler.

packages/cli/src/ui/components/messages/ToolGroupMessage.tsx

@@ -6,7 +6,7 @@
 
 import type React from 'react';
 import { useMemo } from 'react';
-import { Box, Text } from 'ink';
+import { Box } from 'ink';
 import type { IndividualToolCallDisplay } from '../../types.js';
 import { ToolCallStatus } from '../../types.js';
 import { ToolMessage } from './ToolMessage.js';
@@ -136,13 +136,6 @@ export const ToolGroupMessage: React.FC<ToolGroupMessageProps> = ({
                   contentWidth={innerWidth}
                 />
               )}
-            {tool.outputFile && (
-              <Box marginX={1}>
-                <Text color={theme.text.primary}>
-                  Output too long and was saved to: {tool.outputFile}
-                </Text>
-              </Box>
-            )}
           </Box>
         );
       })}