Fonts: use craft-fonts as an optional build input; move the Japanese fonts out

Shippori Mincho (and its OFL file) leaves assets/fonts/: the Japanese fonts now
live in storytold/craft-fonts. printcraft-fonts gets craft-fonts' build.rs recipe:
with CRAFT_FONTS_DIR=<checkout> it embeds the manifest's fonts as CRAFT_FONTS
(wasm32: only BIZ UDPGothic Regular); without it CRAFT_FONTS is empty and the
app builds, tests and runs as before, minus the Japanese face.

- SHIPPORI_MINCHO is now Option<&[u8]> from CRAFT_FONTS; japanese_glyph
  (was shippori_glyph) uses document_japanese_font() (Shippori Mincho, then
  BIZ UDMincho, then any Jpan face) and returns GlyphError::NoFont without one.
- Editing PDF text into Japanese without craft-fonts is a clear EditError that
  leaves the page untouched.
- UI: every Jpan craft font (BIZ UDPGothic first) is the last fallback of
  every egui family, sharing the same static bytes.
- Tests: Japanese glyph/edit tests skip without craft-fonts; new UI tests for
  no-tofu Japanese with craft-fonts and working fonts without it.
- CI: the Linux test job checks out craft-fonts at a pinned SHA and runs the
  tests with CRAFT_FONTS_DIR. Releases build every platform with it
  (CRAFT_FONTS_REQUIRED=1) and ship each font's OFL as OFL-<family>.txt.
- ATTRIBUTION.toml gains [[build_input]] (checked by xtask assets); NOTICE,
  AGENTS.md, CLAUDE.md, README and docs say fonts live in craft-fonts.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packaging/env.sh

@@ -50,6 +50,19 @@ copy_docs() {
   for f in README.md LICENSE LICENSE-MIT LICENSE-APACHE COPYRIGHT; do
     if [ -f "$ROOT/$f" ]; then cp "$ROOT/$f" "$dest/"; fi
   done
+  copy_font_licences "$dest"
+}
+
+# Builds made with the optional craft-fonts input (CRAFT_FONTS_DIR, set for every release) embed
+# its fonts, so the package carries their licences: fonts/<family>/OFL.txt -> OFL-<family>.txt.
+copy_font_licences() {
+  local dest="$1" f family
+  [ -n "${CRAFT_FONTS_DIR:-}" ] || return 0
+  for f in "$CRAFT_FONTS_DIR"/fonts/*/OFL.txt; do
+    [ -f "$f" ] || continue
+    family="$(basename "$(dirname "$f")")"
+    cp "$f" "$dest/OFL-$family.txt"
+  done
 }
 
 # Portable SHA-256 of a file (prints just the hash).

packaging/macos/package.sh

@@ -103,6 +103,7 @@ mkdir -p "$APP/Contents/MacOS" "$APP/Contents/Resources"
 # Executable and icon carry the display name (CFBundleExecutable / CFBundleIconFile).
 cp "$WORK/bin/printcraft" "$APP/Contents/MacOS/PrintCraft"
 cp "$ROOT/assets/app-icon/printcraft.icns" "$APP/Contents/Resources/PrintCraft.icns"
+copy_font_licences "$APP/Contents/Resources"
 sed -e "s/@VERSION@/$VERSION/g" -e "s/@SHORT_VERSION@/$SHORT_VERSION/g" \
   -e "s/@BUILD_SHA@/${PRINTCRAFT_BUILD_SHA:-unknown}/g" \
   "$HERE/Info.plist.in" >"$APP/Contents/Info.plist"

packaging/windows/package.ps1

@@ -110,6 +110,14 @@ foreach ($f in 'README.md', 'LICENSE', 'LICENSE-MIT', 'LICENSE-APACHE') {
   $p = Join-Path $Root $f
   if (Test-Path $p) { Copy-Item $p $Portable }
 }
+# Builds made with craft-fonts (CRAFT_FONTS_DIR, set for every release) embed its fonts: ship their
+# licences, fonts\<family>\OFL.txt -> OFL-<family>.txt.
+if ($env:CRAFT_FONTS_DIR) {
+  Get-ChildItem -Path (Join-Path $env:CRAFT_FONTS_DIR 'fonts') -Directory -ErrorAction SilentlyContinue | ForEach-Object {
+    $ofl = Join-Path $_.FullName 'OFL.txt'
+    if (Test-Path $ofl) { Copy-Item $ofl (Join-Path $Portable "OFL-$($_.Name).txt") }
+  }
+}
 $Zip = Join-Path $Dist "printcraft-$Version-windows-$Arch-portable.zip"
 Remove-Item -Force $Zip -ErrorAction SilentlyContinue
 Compress-Archive -Path $Portable -DestinationPath $Zip