The font scan read only the macOS font folders and the Additional
Fonts Folder, so fonts that apps and font managers register with
CoreText from their own folders were missing from the font menus, and
exports set such type in the fallback font. CoreText's font manager
lists them with the installed fonts.
- `mac_fonts.rs` lists the files of the fonts the font manager has
available (`CTFontManagerCopyAvailableFontURLs`, through
objc2-core-text), keeping only file URLs as `open_documents.rs` does
(#433). The desktop app and `vectorcraft-cli` install it as they
install the DirectWrite lister on Windows, and the scan reads the
files outside the font folders in place.
- The scan leaves out faces with no outlines the font engine draws (no
glyf, CFF, CFF2 or VARC table), on every platform. CoreText lists
Apple's PingFang UI interface font (macOS 27), whose outlines are in
an hvgl table; if the scan cataloged it, PingFang SC would count as
installed, and Chinese characters in fallback text, Japanese kanji
included, would draw blank.
- Tests: the list holds the installed fonts by full path, a font
registered from another folder is listed while it is registered, and
a face without outlines the engine draws isn't cataloged.
4b00c2d968