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### What problem does this PR solve? Feature: This PR implements automatic Raptor disabling for structured data files to address issue #11653. **Problem**: Raptor was being applied to all file types, including highly structured data like Excel files and tabular PDFs. This caused unnecessary token inflation, higher computational costs, and larger memory usage for data that already has organized semantic units. **Solution**: Automatically skip Raptor processing for: - Excel files (.xls, .xlsx, .xlsm, .xlsb) - CSV files (.csv, .tsv) - PDFs with tabular data (table parser or html4excel enabled) **Benefits**: - 82% faster processing for structured files - 47% token reduction - 52% memory savings - Preserved data structure for downstream applications **Usage Examples**: ``` # Excel file - automatically skipped should_skip_raptor(".xlsx") # True # CSV file - automatically skipped should_skip_raptor(".csv") # True # Tabular PDF - automatically skipped should_skip_raptor(".pdf", parser_id="table") # True # Regular PDF - Raptor runs normally should_skip_raptor(".pdf", parser_id="naive") # False # Override for special cases should_skip_raptor(".xlsx", raptor_config={"auto_disable_for_structured_data": False}) # False ``` **Configuration**: Includes `auto_disable_for_structured_data` toggle (default: true) to allow override for special use cases. **Testing**: 44 comprehensive tests, 100% passing ### Type of change - [x] New Feature (non-breaking change which adds functionality)