Analyze existing KiCad projects, schematics, PCB layouts, Gerbers, netlists, and PDF reference schematics. Use when files such as .kicad_sch, .kicad_pcb, .kicad_pro, or Gerbers are supplied and the user wants review, debugging, net tracing, ERC/DRC/DFM, schematic-to-PCB comparison, or pre-fabrication checks. Do not use to create a new design from requirements or for standalone sourcing and ordering.