Allow remote branch renames to be performed with optional credentials so
operations against protected remotes succeed when authentication is needed.
The backend accepts username/password and uses an authenticated push path
when provided, while the frontend prompts for and reuses stored credentials.
- Add optional username/password to rename RPC and use authenticated push
- Wire UI to queue rename, open credential dialog, and execute rename
- Extend credential dialog and handling to include the rename action
Christoph
32832f5db7