Hero: sessions form a team with groups, state, memory — not just
messaging. Features: 4 tabs with real CLI code (groups, state,
memory, coordination patterns). Use cases: team sprint with 5
agents, new-hire knowledge transfer via recall(), deploy-frozen
via shared state. All match the shipped spec (v0.3.0).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>