All projman command names now start with 'projman' prefix to match
git-flow behavior and avoid forced plugin namespace in autocomplete.
Before: /projman:sprint-plan, /projman:project-status
After: /projman sprint plan, /projman project status
This matches git-flow which shows /gitflow commit, /gitflow status.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
