New catalog crates/ui-egui/src/i18n/de.rs (266 entries) mirroring the ru.rs
key set exactly; original translations written from the meaning of the
English UI strings, MIT OR Apache-2.0.
- Language::De registered (code de, name Deutsch); de/de-DE/de_AT/de-CH
resolve via from_tag
- Tests: German coverage in the i18n coverage loop, de/de-AT/de-CH locale
tags, ribbon round-trip case, default CJK font-order assertion
- Docs: localization-parity.md row, ROADMAP.md languages section
cargo test -p gridcraft-ui-egui i18n: 5 passed; --lib: 21 passed;
interaction + formula_locale: 13 + 8 passed.
