Add Lingala (ln) translation

[Degrace15]

This PR adds the Lingala (ln) translation for Acode.

• Added src/lang/ln-ln.json
• 836 translation keys
• JSON validated
• All detected English strings translated
• Placeholders checked

[greptile-apps]

Greptile Summary

Adds a new Lingala translation file containing 836 localization entries.

• Introduces Lingala labels for application, editor, terminal, plugin, and LSP interfaces.
• The locale is not registered in the runtime language map.
• Several canonical keys are missing or renamed, and many values remain English or French.

Confidence Score: 4/5

The locale should not merge until it is registered so users can select it; its key mismatches and untranslated values should also be corrected.

The added file is never exposed through the hardcoded locale map, so users cannot activate Lingala and an explicit ln-ln setting falls back to English; enabling it would additionally expose missing canonical labels and mixed-language content.

Files Needing Attention: src/lang/ln-ln.json and src/lib/lang.js

Important Files Changed

Filename	Overview
src/lang/ln-ln.json	Adds the Lingala locale data, but it is currently unreachable, does not fully match the canonical key contract, and contains substantial untranslated content.

_{Reviews (1): Last reviewed commit: "Update Lingala translation" | Re-trigger Greptile}