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### Motivation and context
This branch completes the CLI workflow for persistent authentication
profiles. Users can save a CVAT server URL and Personal Access Token
under a named profile, then reuse it with `--profile` instead of
repeatedly passing credentials on the command line.
It adds `cvat-cli profile` commands to:
- List saved profiles, including the active default.
- Create a profile from a PAT, optionally deriving its name from the
server.
- Set, print, or clear the default profile.
- Delete profiles safely.
The implementation builds on the auth/config resolution already present
in `develop`. It uses the SDK’s `AuthStore.put_profile` API, preserves
copy-on-write store updates, and applies the same server-port validation
used by normal CLI client creation.
URL normalization was also moved into shared SDK utilities so both
`Client` and profile creation use one implementation for default HTTPS
schemes, trailing-slash removal, and invalid-scheme validation.
### How has this been tested?
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### Checklist
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- [x] I submit my changes into the `develop` branch
- [x] I have created a changelog fragment <!-- see top comment in
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- [ ] I have updated the documentation accordingly
- [x] I have added tests to cover my changes
- [x] I have linked related issues (see [GitHub docs](
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### License
- [x] I submit _my code changes_ under the same [MIT License](
https://github.com/cvat-ai/cvat/blob/develop/LICENSE) that covers the
project.
Feel free to contact the maintainers if that's a concern.
---------
Co-authored-by: Maxim Zhiltsov <maxim@cvat.ai>
Andrei Strongin
69cdda3e75