New MCP tool `export_sch_pdf` wrapping `kicad-cli sch export pdf`: exposes the full option set (drawing-sheet override, theme, B&W, exclude-drawing-sheet, default-font, the PDF property-popup / hierarchical-link / metadata excludes, no-background-color, and page selection). schematicPath is required and validated. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>