Frontend: Cleanup i18next logs

[tristanlabelle]

The console output from a local yarn start is almost unusable because of the amount of i18next logging, which includes every loaded string. Unfortunately i18next, and especially next-i18next don't allow muting only that log level, so my only solution was monkey patching console.log.

This then exposed two warnings/errors that we had been missing:

• en-CORP strings were failing to load because i18next canonicalized the locale to en-Corp.
• mod strings for non-English locales were erroring because they don't exist.

The most verbose logs being filtered are:

i18next::backendConnector: loaded namespace global for language zh-Hant { ... }
i18next: initialized { ... }
i18next: languageChanged en

Testing

Ran the frontend locally and reloaded /dashboard.

Before: over 8000 lines of junk, including:

i18next::backendConnector: loaded namespace donations for language hi {
  donations_box: {
    monthly_button_label: 'मासिक',
    action_button_label: 'अगला',
    validation_message: 'यह फ़ील्ड आवश्यक है',
    one_time_button_label: 'एक बार',
    ...

After:

 ✓ Starting...
Generated blog index with 53 posts.
Generated RSS feed with 53 posts.
Generated blog index with 53 posts.
Generated RSS feed with 53 posts.
 ○ Compiling /instrumentation ...
 ✓ Compiled /instrumentation in 2.6s (1072 modules)
 ✓ Ready in 8.4s
 ○ Compiling /[...slug] ...
 ✓ Compiled /[...slug] in 19.1s (3871 modules)
 ○ Compiling /404 ...
 ✓ Compiled /404 in 1572ms (3879 modules)
 GET /_next/static/webpack/1d9b70390693ccc9.webpack.hot-update.json 404 in 25652ms
 ⚠ Fast Refresh had to perform a full reload. Read more: https://nextjs.org/docs/messages/fast-refresh-reload
 ○ Compiling /middleware ...
 ✓ Compiled /middleware in 1129ms (832 modules)
 ○ Compiling /dashboard ...
 ✓ Compiled /dashboard in 1615ms (4054 modules)
 GET /dashboard 200 in 2717ms
 GET /_next/static/webpack/1d9b70390693ccc9.webpack.hot-update.json 404 in 2119ms

Web frontend checklist

• There are no console warnings when running the app
• Added tests where relevant
• Clicked around my changes running locally and it works
• Checked Desktop, Mobile and Tablet screen sizes

For maintainers

• Maintainers can push commits to my branch
• Maintainers can merge this PR for me

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Project	Deployment	Actions	Updated (UTC)
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[aapeliv]

lgtm

[github-actions]

📝 Release Notes

This PR does not need to be included in release notes.

Reason: This PR is mainly a developer-experience cleanup for local frontend logs and fixes issues discovered during development, but it does not introduce a noticeable end-user feature, UX change, or significant user-facing bug fix in production.

🤖 Bot Debug Information

Model: couchers.openai.gpt-5.4
Decision: exclude
Reasoning: This PR is mainly a developer-experience cleanup for local frontend logs and fixes issues discovered during development, but it does not introduce a noticeable end-user feature, UX change, or significant user-facing bug fix in production.