d22bbc4ab2
C++ (equipment_service.hpp): - ReportSubstrate ARRIVED: check CreateResult and return INVALID_OBJECT when the substrate ID already exists, instead of silently doing nothing - ReportSubstrate/ReportModule default switch branches: return false (→ CANNOT_DO_NOW) for unknown enum values instead of silently accepting Python (_client.py): - @eq.command: raise NameError (client-side name validation) instead of SecsGemError (which means "daemon declined a request") — wrong type - Module docstring: update example to show @eq.command / eq.names API Test (test_daemon_service.cpp): - Add duplicate-ARRIVED check (expects INVALID_OBJECT) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>