Document parsing request. document file is required (multipart/form-data). Supports
multiple formats: PDF, DOCX, XLSX, PPTX, HTML, XML, JSON, Markdown, EPUB, RTF, ODT,
ODS, ODP, CSV, TSV, YAML, TOML, INI, EML, VCF, ICS, LaTeX, and image formats (with OCR).
Optional query parameter use_ocr enables OCR for PDFs and images. Optional form fields:
convertForDatatable (boolean), xlsx_mode (smart/raw), xlsx_output_format (csv/json),
skip_headers (integer), detect_categories (boolean), preserve_structure (boolean).