Draft: Translation MR for GITTECHA-40 #1

What does this MR do?

This merge request contains translations of the product documentation. The source files are from the /doc directory, and translations are returned to language-specific directories under /doc-locale.

Translation MR information

Argo request: https://gitlab.spartansoftwareinc.com/#workspace/request/GITTECHA-40

These files belong to Phase 1 resend, and have been processed through the AI translation workflow, followed by human review that's still in progress as of 2025-06-30.