Three fixes:
1. Use pandoc -f markdown-citations to avoid @label citation parsing
errors in Typst output.
2. Remove Pandoc auto-generated heading labels (<...>) from typst body.
Without this, Typst creates named-destination links for outline
entries. Named destinations with non-ASCII characters break in
macOS Preview and other PDF readers.
3. Fix expand_bookmarks() to clone the full document (preserving all
/Dest attributes) instead of rebuilding outline from scratch, which
destroyed the bookmark hierarchy.
4. Add --root / to typst compile for consistent absolute path resolution.
Zhengshou Lai
38328c28d0