fix(desktop): localize application menus

[Hona]

Issue for this PR

Closes#35601

Also addresses #28797.

Type of change

• Bug fix

What does this PR do?

• Adds typed desktop menu translation keys for all 18 supported app locales.
• Updates the Windows and Linux titlebar menu reactively when the selected language changes.
• Synchronizes translated labels to Electron's native macOS menu while preserving native roles and accelerators.
• Rebuilds the process-global menu safely when the selected language changes.
• Requires every literal menu label to provide a translation key or explicitly opt out.
• Removes obsolete duplicate menu strings from the desktop-only dictionaries.
• Keeps English fallbacks and channel-specific OpenCode app names for startup and malformed IPC payloads.

This covers the all-locale and native-menu lifecycle gaps left by #34103 and #35602.

How did you verify your code works?

• bun typecheck in packages/app
• bun typecheck in packages/desktop
• Repository pre-push hook: all 30 workspace typechecks passed
• Targeted Oxlint: zero errors
• Translation drift check confirms every new menu key is present in every supported locale

Tests were not added or run.

Checklist

• I have not included unrelated changes in this PR

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[github-actions]

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