Screen an existing project for weaknesses and improvements. Provide whatever you have: beams [{name, span_m, width_mm, depth_mm, material (timber|steel|concrete|lvl), tributary_width_m}], columns [{name, load_kn, width_mm, depth_mm, height_m, material}], rooms [{name, area_m2, windows_m2, egress_window, ventilation, occupants}], floors, floor_height_m, exits, corridor_width_m, stair_width_m, ceiling_height_m, structure, sprinklers, r_value, seismic_zone/wind_zone ('high'), bracing, soft_storey, dead_load_kpa, live_load_kpa, and optionally dxf (text of a DXF plan). Returns a score, prioritised findings with fixes (bending, deflection, buckling, daylight, egress, fire, energy, lateral loads) and improvement ideas. Screening only, not a stamped engineering check. Cost: 1 credit per call.