DX improvement: find_repo_bottle_file() is called before the save
prompt so the user sees exactly which file will be updated:
Save host_key for 'myrepo' to /home/.../bottles/dev.md? [y/N]
If no bottle file is found the prompt is skipped and a clear message
explains that the key is session-only.
Also:
- Use find_repo_bottle_file() inside find_and_update_bottle_file()
instead of duplicating the scan logic
- Rename all module-level helpers to public names (no underscore prefix)
since they are imported and tested externally
didericis-claude
e27bd66080