SUMDAdapter in src/data2dsl_adapters.py.Data2DslSkill in src/data2dsl_skill.py with MCP tools data2dsl_validate_envelope and data2dsl_simulate_healing.urirun routes for Subactor operations.tests/test_sumd_adapter.py and extended tests/test_skill.py (76/76 tests passing).GOV-PASS).