[Issue]: Provisional desktop front-end (black on white) #1

Branch Name

feature/01-black-on-white

Task

Description
This task consists to build a minimal black-on-white desktop app connected to the central API, with login and simple navigation. This temporary front-end lets the team test the full flow end to end while the final design is still in progress.

Scope

• Login Window
• Simple navigation between a few placeholder screens
• Connection to the central API
• Black on white only, so no styling yet

Acceptance Criteria

• The app opens on the login screen
• After logging in, the user lands on a home screen
• The user can navigate between screens
• The app communicates with the deployed API

Checklist

• I have checked for duplicate issues.
• I have assigned the issue to the correct project board.
• I have tagged the issue properly.

Code of Conduct

• I agree to follow this project's Code of Conduct