Use the system opener for macOS open-document events, matching command-line slideshow startup. Cover launch-time and later opens, error preservation and slideshow selection.
Use the pinned shared PDF writer with explicit font embedding errors, preserving app-owned rendering and current main. All seven local gates and fresh Ubuntu/FreeBSD checks passed on the exact integration tree; paired native/WASM PDF bytes, structure, text and pixels match. Original contributor commits are preserved.
Use the pinned shared PDF writer with explicit font embedding errors, preserving app-owned rendering and current main. All seven local gates and fresh Ubuntu/FreeBSD checks passed on the exact integration tree; paired native/WASM PDF bytes, structure, text and pixels match. Original contributor commits are preserved.
Preserve notes and handout master export, visible text and native parallel
compression while propagating shared font errors through each export path.
Keep the dependency check accurate for native and WASM feature resolution.
PR #708.
