1) U polje ispod nalepi HTTPS forwarded URL backend-a (Codespaces port 8080, Visibility: Public), npr. https://8080-xxxxxxxxxxxxxxxx-xxxxx.app.github.dev
https://8080-xxxxxxxxxxxxxxxx-xxxxx.app.github.dev
Može i preko URL parametra: ?api=https://… (auto-popunjava polje).
?api=https://…
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