pdf-trad-to-simp-preserve-layout-kit

Convert traditional Chinese PDFs to simplified Chinese while preserving page size, images, selectable text, and overall layout as much as possible. Use when Codex is asked to directly convert a source PDF from 繁体 to 简体 without rebuilding the book, to keep the original PDF structure and pictures, to replace an image-only cover after conversion, or to make the body font lighter after text-layer replacement.