CLAUDE.md (setup) was already reworked for core/expansion split.
This completes the remaining two files:
CLAUDE.template.md (in-session behavior):
- Modality switching checks installed modalities instead of hard-coding all 6
- Natural language triggers point to library dirs instead of listing expansion content
- Persona selection reads library and conditionally shows expansion options
docs/GETTING-STARTED.md:
- Setup overview shows core defaults (2 personas, CBT only)
- Customization sections reference Expansion Pack for additional content
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>