Add output truncation for directory listings when entries exceed
configured line limit. This prevents overwhelming output for large
directories while still informing users of truncated content.
- Add MAX_ENTRY_COUNT constant (100) as upper bound
- Use getTruncateToolOutputLines() config for dynamic limits
- Show truncated item count with proper singular/plural handling
- Update output format with --- separators for clarity
- Add comprehensive tests for truncation behavior
Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>
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