Implement the --receipts CLI flag accepting "off" | "lite" | "svg" with default "off".
Thread the ExtractionOptions.receipts field through the extraction pipeline so that
receipts are generated for spans and blocks based on the selected mode.
Changes:
- CLI: Added --receipts flag with clap value_parser for runtime validation
- CLI: Added feature check for SVG mode (requires 'receipts' feature)
- MCP tools: Added receipts field to ExtractArgs, ExtractTextArgs, ExtractMarkdownArgs
- MCP tools: Added build_extraction_options() to parse receipts mode
- Core: Added extract.rs module with extract_pdf(), extract_page(), generate_receipt()
- Core: Added ExtractionOptions with ReceiptsMode enum (Off/Lite/SvgClip)
- Core: Added receipts feature flag to Cargo.toml
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3d9e93fef4