Prepared the JLCPCB PCB planning handoff package. Important: the current layout is intentionally unfinished and contains airwires, dangling/floating copper, and local overlaps; the handoff brief tells JLCPCB not to fabricate until they finish routing and achieve clean DRC.

Send JLCPCB the handoff brief first, then these files and the editable Flux project URL. Ask them to return clean final Gerbers, BOM/CPL, and a DRC report after completing the U1/jumper area.