feat: implement MD009 trailing spaces rule with perfect parity#67
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Complete implementation of MD009 rule matching markdownlint behavior exactly: - Add MD009TrailingSpacesTable configuration with br_spaces, list_item_empty_lines, strict parameters - Implement line-based analysis with AST caching for performance - Support configurable br_spaces for line break detection (default 2) - Handle code block exclusions (fenced and indented) - Support list_item_empty_lines exception handling - Implement strict mode with paragraph detection for actual line breaks - Add comprehensive test suite with 15 unit tests covering all scenarios - Create test samples and configuration files for validation - Achieve 100% parity with markdownlint across all standard cases - Add detailed rule documentation 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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Complete implementation of MD009 rule matching markdownlint behavior exactly:
🤖 Generated with Claude Code