The CJK render test skipped wherever no Japanese face was installed, which
is every CI runner, and on a Mac it drew glyphs with or without the fix, so
it caught nothing. Replace it with a fallback-order test: fixture faces for
`Hiragino Sans` and `Hiragino Sans GB` show that a zh-hans Han lookup tries
the Chinese family first, that ja tries the Japanese one, and that a layout
gets Hiragino Sans GB. Synthetic fonts in an isolated child process keep it
independent of the host's fonts; with the Simplified list reverted it fails
on `[7]` against `[8, 7]`.
Delete `TEST_CJK_LOCALE`: the locale-mutating tests moved to an isolated
child process, so nothing used the lock and the test-only static failed
clippy's `-D warnings` gate.
Trim the documentation edits to the single docs/gaps.md gap-11 row: revert
the header and changelog edits in ROADMAP.md, docs/roadmap.md,
docs/localization-parity.md and docs/target-app-parity.md, and the gaps.md
header and changelog row, which conflict with other PRs.
Tests: cargo clippy -p effectcraft-text -p effectcraft-render --all-targets
-- -D warnings, cargo clippy --workspace --all-targets -- -D warnings,
cargo test -p effectcraft-text (79 lib), cargo test -p effectcraft-render
(264 passed, 1 ignored perf test), cargo fmt --all -- --check.
BFlat