crates/text/build.rs embeds the fonts of a storytold/craft-fonts checkout
named by CRAFT_FONTS_DIR as filmcraft_text::fonts::CRAFT_FONTS (native:
all of them; wasm32: only BIZ UDPGothic Regular). Unset, CRAFT_FONTS is
empty and nothing changes. A bad CRAFT_FONTS_DIR is a warning, or an
error with CRAFT_FONTS_REQUIRED=1. Never a Cargo dependency, no network.
- UI: the Japanese faces are the last fallback of every egui font family
(BIZ UDPGothic first, Bold first in the semibold/medium families).
- Text engine: registered after the bundled faces; fallback_for picks
them after the bundled faces and before system faces (Mincho for serif
text, Gothic otherwise, nearest weight).
- Tests: Japanese glyphs (no tofu) in the UI and title paths, skipped
without craft-fonts; the theme works with CRAFT_FONTS empty.
- Release: every build job checks out craft-fonts at a pinned commit and
builds with CRAFT_FONTS_DIR + CRAFT_FONTS_REQUIRED; packages carry
OFL-<family>.txt. NOTICE, ATTRIBUTION.md (optional build input), AGENTS.md,
CLAUDE.md, README and docs/contributing.md describe it.
FilmCraft main bundles no Japanese font, so no font files move.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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