feat(openlogi-gui): add Russian localization and language select

[AprilNEA]

Summary

• add Russian (ru) to the supported GUI locale list and locale resolver
• add Russian translations for all existing OpenLogi GUI strings
• replace the Settings language chip row with a gpui-component Select for a more compact, scalable language picker
• cover ru/ru-RU locale matching and basic translation loading in i18n tests

Verification

• cargo test -p openlogi-gui
• cargo check -p openlogi-gui
• cargo clippy -p openlogi-gui -- -D warnings
• cargo fmt --check
• git diff --check

[pullfrog]

✅ No new issues found.

Reviewed changes — adds ru as a first-class GUI locale: the language picker entry, BCP-47 matcher arm, full 110-entry translation column in app.yml, and unit tests covering ru / ru-RU resolution plus a basic translation spot-check.

• SUPPORTED and match_supported extended — ("ru", "Русский") slotted between ja and zh-CN; match_supported gains a Some("ru") arm so both bare ru and region-tagged ru-RU collapse to "ru".
• Translation catalog complete — every key with a ja entry gets a ru entry (confirmed 110 = 110 = 110 against zh-CN); strings are consistently double-quoted; %{name} / %{slot} interpolation placeholders preserved verbatim.
• Doc comments updated — the module doc, SUPPORTED doc, and AppSettings::language doc all now list ru. The SUPPORTED doc correctly notes that under ru (like ja) the framework's gpui-component widget strings fall back to English since only en / zh-CN / zh-HK ship in upstream ui.yml.
• Tests — maps_locale_variants gains ru / ru-RU cases; locale_file_resolves_keys adds a set_locale("ru") block asserting "Settings" and "Left Click". This matches the existing pattern (exhaustive coverage iteration stays zh-CN-only; ja and ru are spot-checks).

  ^{｜ View workflow run ｜ Using Claude Opus ｜ 𝕏}

[pullfrog]

✅ No new issues found.

Reviewed changes — the language picker is rewritten from a wrapping chip row to a gpui-component Select, and open_or_focus is generalized so view constructors receive a &mut Window (needed by SelectState::new).

• SettingsView adopts Select — holds a SelectState<Vec<LanguageOption>> entity built in new, subscribes to SelectEvent::Confirm, and applies the chosen value via AppState::set_language followed by the same refresh_windows / rebuild / request_refresh triad the old chip handler used. The chip helpers and their accent-color styling are removed.
• LanguageOption + SelectItem — a small option type wrapping (label, value, localize_label). The "Follow system" row sets localize_label: true so title() re-evaluates rust_i18n::t!("Follow system") on each render; the per-locale rows use their native names verbatim. selected_language_index maps the stored language code (or "" for unset) back to an IndexPath, defaulting to row 0.
• open_or_focus signature change — build_view: FnOnce(&mut Window, &mut Context<V>) -> V; the inner cx.new(build_view) is rewrapped as cx.new(|cx| build_view(window, cx)). The three other AuxWindow constructors (AboutView, AddDeviceView, UpdateConsentView) take the new _: &mut Window parameter without otherwise changing.

  ^{｜ View workflow run ｜ Using Claude Opus ｜ 𝕏}