chore: new tests for localization

[camrun91]

This PR adds the tests for localization

Greptile Summary

This PR adds two new test files covering the i18n module and the VerseOfTheDay component's localization integration. Both previous review concerns (orphaned event listener, hardcoded locale cleanup) have been addressed in this iteration.

Confidence Score: 5/5

Safe to merge — both prior concerns are resolved and no new issues are present.

All findings are P2 or lower; prior P1 concerns (orphaned listener, fragile afterEach cleanup) have been addressed. The tests are correct and serve their stated purpose.

No files require special attention.

Important Files Changed

Filename	Overview
packages/ui/src/i18n/index.test.ts	New test verifying English bundle key resolution; handler cleanup (i18n.off) is now present, addressing the prior orphaned-listener concern.
packages/ui/src/components/verse-of-the-day.test.tsx	New i18n integration smoke test for VerseOfTheDay; all hooks stubbed correctly, hardcoded-locale afterEach from the prior version has been removed.

Sequence Diagram

sequenceDiagram
    participant T as Test Runner
    participant I as i18n index.test.ts
    participant V as verse-of-the-day.test.tsx
    participant i18n as i18n Instance
    participant VOTD as VerseOfTheDay Component

    T->>I: run i18n instance tests
    I->>i18n: check isInitialized
    i18n-->>I: true (synchronous resources)
    I->>i18n: t('verseOfTheDay')
    i18n-->>I: "Verse of The Day"
    I-->>T: ✓ key resolves correctly

    T->>V: run VerseOfTheDay i18n tests
    V->>V: stubHooks() (mock all platform hooks)
    V->>VOTD: render(<VerseOfTheDay />)
    VOTD->>i18n: useTranslation({ i18n }) → t('verseOfTheDay')
    i18n-->>VOTD: "Verse of The Day"
    VOTD-->>V: DOM with translated label
    V->>V: screen.getByText(en.verseOfTheDay)
    V-->>T: ✓ translated label in document

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[cameronapak]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 3 additional findings.

[cameronapak]

Hey Cam L., been looking at this PR the past 20 minutes. Thank you for the initiative.

I imagine the heart of these tests are to ensure things are working well with the localization work you did in #210. It seems good as-is

thought (non-blocking): If you want to make this PR even better, it seems these tests could be simplified. In i18n/index.ts, most of it validates that i18next does what it says it will do, but we are more concerned with how it works practically within our codebase. (This will flesh out more as we get translations and do Storybook testing in the future) I have a fun snippet that I ask in Claude after it creates a plan or writes code: "Please step back and think again. How can we make this SIMPLER and DUMBER while still achieving our goals?" This is completely optional, but I'm often a fan of less code (in general) leads to less problems.

[camrun91]

thought (non-blocking): If you want to make this PR even better, it seems these tests could be simplified. In i18n/index.ts, most of it validates that i18next does what it says it will do, but we are more concerned with how it works practically within our codebase. (This will flesh out more as we get translations and do Storybook testing in the future) I have a fun snippet that I ask in Claude after it creates a plan or writes code: "Please step back and think again. How can we make this SIMPLER and DUMBER while still achieving our goals?" This is completely optional, but I'm often a fan of less code (in general) leads to less problems.

This is a good idea. I simplified it

[cameronapak]

LGTM!