chore: removed unused locale argument in #get_about_info function

[Fijxu]

Checklist

• I have read the AI Policy and understand the disclosure requirements

AI Disclosure

• AI was not used to create this pull request
• AI was used to fully create this pull request
• AI was used to partially create this pull request

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Pull request description

Title, unused arg.
Related to #5898

Summary by CodeRabbit

• Bug Fixes
  • Improved channel information retrieval across API and web routes.
  • Resolved inconsistencies when loading channel details with localized requests.
  • Existing error handling and responses remain unchanged.

Greptile Summary

This change removes the unused locale argument from the channel about-information helper and updates its API and web route callers. The updated signature and both tracked call sites are consistent, and the removed parameter was not referenced by the helper body.

T-Rex validation blocked

The focused make verify compile check could not run because the required Crystal and Shards tools are not installed; Docker is also unavailable for the container fallback.

Confidence Score: 5/5

No defect was found in the edited helper signature or its two updated callers.

There are no final review findings. Source inspection confirmed the removed parameter was unused and that the tracked callers match the new one-argument signature.

Files Needing Attention: No files need author attention. A Crystal-enabled environment should run make verify before release because compilation could not be exercised here.

T-Rex Logs

What T-Rex did

• Ran make verify to validate the Crystal build step; the build failed because Crystal was not installed, exiting with code 2 and an underlying status of 127.
• Compared the helper and its callers before and after the change; observed that locale was unused in the helper body and that every tracked caller uses the matching one-argument signature.

_{Ran code and verified through T-Rex}

_{Reviews (1): Last reviewed commit: "chore: removed unused `locale` argument ..." | Re-trigger Greptile}

[TheFrenchGhosty]

@coderabbitai full review

[coderabbitai]

✅ Action performed

Full review finished.

[coderabbitai]

📝 Walkthrough

Walkthrough

The get_about_info method now accepts only a channel ID. The API and web channel routes no longer pass a locale argument. Existing error handling remains unchanged.

Changes

Channel locale parameter cleanup

Layer / File(s)	Summary
Update channel lookup contract and callers src/invidious/channels/about.cr, src/invidious/routes/api/v1/channels.cr, src/invidious/routes/channels.cr	get_about_info now accepts only ucid. Both channel routes call it without locale.

Estimated code review effort: 1 (Trivial) | ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: removing the unused locale argument from get_about_info.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[TheFrenchGhosty]

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