Update ru translation

[funkill]

Updated ru translation (+ cosmetic fixes)

Added to available langs, added to dir structure (where found zh_CN l10n key)

[github-actions]

Branch Targeting Suggestion

You've targeted the master branch with this PR. Please consider if a version branch might be more appropriate:

• maintenance-9.x - If your change is backward-compatible and won't create compatibility issues between INAV firmware and Configurator 9.x versions. This will allow your PR to be included in the next 9.x release.

• maintenance-10.x - If your change introduces compatibility requirements between firmware and configurator that would break 9.x compatibility. This is for PRs which will be included in INAV 10.x

If master is the correct target for this change, no action is needed.

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[Copilot]

Pull request overview

This PR updates the Russian (ru) translation for the INAV Configurator application and adds Russian to the list of available languages. The changes include translation improvements, cosmetic fixes for consistency, and the addition of Russian locale support across the codebase.

• Adds Russian ('ru') to the available languages list
• Updates Russian translations with improved wording and cosmetic fixes to match English source formatting
• Updates documentation to reflect the new Russian locale support

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
locale/ru/messages.json	Updates and refines Russian translations, removes trailing periods for consistency with English source, reorganizes JavaScript programming related entries, but removes the javascriptOptimizationsApplied translation key
js/localization.js	Adds 'ru' to the availableLanguages array in correct alphabetical order
CLAUDE.md	Updates directory structure documentation to include 'ru' in the list of supported i18n translations

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[Copilot]

Both "_comment" and "comment" fields are present for this entry. Looking at the English translation file (locale/en/messages.json), the "language_de" entry only uses "comment" (without underscore), while other language entries use "_comment" (with underscore). This creates an inconsistency. The entry should use only one comment field to match the pattern established in the source language file - preferably "comment" without the underscore to match the English version of this same key.

Suggested change

"_comment": "Don't translate!",