{"L1_core": {"domain": "mechanical", "category": "support", "entity_type": "component"}, "L5_metadata": {"updated": "2026-01-02", "version": "2.0"}, "L2_mechanical": {"types": {"industrial": ["structural_support", "machine_base", "anchor"], "electronics": ["luminaire_mount", "equipment_base", "monitor_stand"], "construction": ["bracket", "angle", "console"]}, "materials": ["steel_painted", "steel_galvanized", "stainless", "aluminum_extruded", "aluminum_cast", "plastic_PA_ABS"], "standards": ["ISO 4014-4018", "EN 1090", "EN 1993"], "specifications": ["max_load", "dimensions", "fixing_points", "surface_finish"]}}