fontique's CoreText-based Han-script fallback fails to resolve a family on
modern macOS (the suggested PingFang is not always in the scanned family
map), so Japanese kanji rendered blank while kana worked. Vendor
i-slint-common 1.16.1 and pre-register Hiragino / PingFang / Apple SD
Gothic Neo / Arial Unicode MS in the fallback map at collection creation
(Japanese-biased default; the map takes priority over the CoreText query).
macOS-only cfg; Linux keeps its working fontconfig fallback. Type-checked
against aarch64-apple-darwin.
cc