Added the DOC pop in web to explain the PAT handling.

[RautAtharv07]

This PR adds a help popup/modal to explain how Personal Access Tokens (PATs) are handled, addressing issue #321.

🔧 What’s Included:
A modal with clear details on PAT usage, privacy, and frontend behavior

"Got it" button styled to match the existing Ingest button for consistent UI/UX

Fully responsive layout matching the project’s design language

📋 Content Shown in Modal:
PAT is never stored on servers or databases

It is used only once for cloning and then discarded

No frontend/local storage caching

[RautAtharv07]

Hello @cyclotruc I didn't understand what your commit say ,do i have to merge any thing in my forked branch ?

[filipchristiansen]

Thank you for your efforts @RautAtharv07! We felt this to be too verbose and went for a more subtle approach #348.