- Remove automatic pass_mgr admin init during installation
- Users must manually run 'pass_mgr admin init' after install
- Update install summary to show initialization as a required step
- This allows non-interactive installation
- Add --uninstall flag to remove installed components
- List items to be removed before confirmation
- Remove pass_mgr binary, skills modules, and env config
- Preserve admin key directory (warns user to remove manually)
- Update PROJECT_PLAN.md with uninstall usage