- add --target parsing and validation in create/edit/remove flows
- show target in list/remove/edit UX and usage examples
- document target option in cliproxy help output
- Add --composite flag to 'ccs cliproxy variant create'
- Implement selectTierConfig() interactive prompt per tier
- Add default tier selection after all tiers configured
- Display composite label in auth list and variant remove
- Show per-tier details in remove confirmation
- Update help text with --composite usage
Refs #506