* feat: add support for SFTP volume backend
* feat: allow more secure SFTP connection with known hosts
* refactor: make default value for skip host key check to false
* refactor: use os.userInfo when setting uid/gid in mount commands
- Add shared client constants file with REPOSITORY_BASE
- Show effective local path in repository info tab
- Update host mount warning to clarify default path is safe when using recommended Docker setup
- Update README to clarify local repositories can use custom paths