Tests:
- Registry initialization and engine requirement
- Plugin registration and discovery
- Load order with and without dependencies
- Core plugin deactivation blocked
- Deactivation blocked by active dependents
- Event handler registration on activate
- Event handler unregistration on deactivate
- Activate → deactivate → reactivate cycle
- Idempotent activate when already active
- Idempotent deactivate when already inactive
Phase 3 (Plugin-Lifecycle) verified:
- install: idempotent, dependency checks, migrations via crm_migration
- activate: idempotent, per-tenant with RLS context, event handlers
- deactivate: idempotent, core protection, dependency check, handler cleanup
- uninstall: deactivate first, then optional drop tables
- main.py: per-tenant activation with set_tenant_context
- Worker: event handlers only for active plugins (Gate 5)
- Router: only in API, not in worker
Agent Zero