Aulvar/Locates ? reverse-engineered prompt

Build me a simple localization setup for the Aulvar website. I want the translation content kept in JSON files, with English as the main source of truth and the other locale compared against it. The goal is to make it really easy to spot missing keys, broken structure, empty values, duplicate entries, or strings that look outdated or inconsistent.

I also want a lightweight way to check translation coverage so we can quickly see what is complete and what still needs work. Keep the wording consistent across the site, and make sure the setup is easy to maintain as new pages and features are added later. If something is wrong in a locale file, the output should be clear enough that a non technical person can understand what needs fixing.

Please keep it clean and practical, focused on quality control, accessibility for a global audience, and scaling nicely with future updates. Look up current docs online if you need to.