fix(i18n): localize remaining setup wizard and status bar strings

[imocat]

Summary

• localize remaining user-facing strings in Setup Wizard, Status Bar, Update Manager, and Rust bridge fallback messages
• add missing Localizable.strings keys for both en and zh-Hans
• normalize hotkey display and model/test status text to use localization keys
• localize LLM profile add-menu labels and elapsed test-time suffix

Validation

• plutil -lint KoeApp/Koe/en.lproj/Localizable.strings
• plutil -lint KoeApp/Koe/zh-Hans.lproj/Localizable.strings
• xcodegen generate
• xcodebuild -project Koe.xcodeproj -scheme Koe-lite -configuration Debug -sdk macosx CODE_SIGNING_ALLOWED=NO build

[missuo]

Review result: the localization patch is coherent on its historical base, but it needs to be recreated/rebased on current main before it can be merged.

I checked both resource files with plutil, compared all localization references, and compared format placeholders: the 276 keys used by this branch are present in both en and zh-Hans, with matching placeholders. I did not find a concrete localization correctness defect in that historical diff.

However, the PR is now conflicting and the setup wizard/status/audio code has changed substantially since its April base. Applying the old 500+ line setup-wizard rewrite would mix obsolete UI structure with current behavior. Please extract the still-missing user-facing strings on top of current main, keep the change limited to English/Simplified Chinese localization, and rerun the app build plus key-parity/placeholder checks there. The newer language-pack work in #94 should also depend on the resulting complete base key set rather than shipping partial locale files.

[missuo]

Thank you for the effort and good intentions. We have decided not to accept any i18n-related pull requests for this project, so we will not move forward with this change. Closing this PR. Thanks for understanding.