Replace Canvas-Based PDF Export with Print/Pagination Architecture#163
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Replace Canvas-Based PDF Export with Print/Pagination Architecture#163ThisIs-Developer wants to merge 7 commits into
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…splitting in legacy raster backend
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…e:// URLs in sidecar
…p graphic elements in block wrappers to prevent splitting
…re CSS vector printing, deleting legacy rasterizer and libraries
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This PR begins the migration away from the current html2canvas + jsPDF bitmap export pipeline and introduces the foundation for a print-oriented PDF architecture designed for large documents, professional output quality, and long-term maintainability.
The existing implementation renders the entire document into a single large canvas, slices the bitmap into pages, and embeds PNG images into a PDF. While functional for small documents, this architecture has significant limitations in performance, memory usage, pagination quality, text fidelity, and scalability.