refactor(ui-egui): split i18n.rs into i18n/table.rs

docs/localization-parity.md

@@ -10,7 +10,7 @@ Script-specific typesetting detail: [cjk.md](cjk.md), [cjk-typography.md](cjk-ty
 
 ## How it was measured
 
-Interface strings live in `crates/ui-egui/src/i18n.rs` (a shared table with German, French,
+Interface strings live in `crates/ui-egui/src/i18n/table.rs` (a shared table with German, French,
 Spanish, Japanese and Simplified Chinese columns) and `crates/ui-egui/src/i18n/{ar,cs,it,ja,ka,pt_br,uk}.rs`.
 Untranslated strings fall back to English. A script (2026-10-10) built the set of English
 interface strings as the union of every catalog's keys, every engine command label and every