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krilla subsets fonts only when the document is finished, so one font its
subsetter rejects ("failed to subset font: malformed font") failed the
whole PDF export. Two of the 365 documents in docxide-pdf's Word
reference corpus hit this on Linux: Caladea Italic and Bold Italic
(ttf-caladea, our metric-compatible stand-in for Cambria) and Noto Sans
New Tai Lue Bold.
When finishing fails on a font, the exporter finds the face krilla
names, logs a warning and writes the document again with that face's
glyphs drawn as filled outlines (FontDb::outline), including in the
watermark; every other font is still embedded as selectable text. At
most 32 faces fall back before the export gives up with the error.
kurbo moves from dev-dependencies to dependencies of wordcraft-pdf (it
was already in the workspace).
Test: a copy of the bundled Source Sans 3 with one glyph turned into a
truncated composite fails the old export exactly as the corpus documents
did; it now exports, with no text glyphs from that font and its glyphs
drawn as paths.
Co-authored-by: Oliver Zieschang <4963183+naxvog@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>