Next steps
I completed the mechanical baseline, but I cannot finish the remaining plan in this run because the available actions here do not include the required PCB component placement tool needed to accurately move
U1, place the mounting holes into their final corner coordinates, and restore the symmetric key field in the layout before matrix cleanup. If that placement capability is made available, the next pass should: center
U1 on the top edge USB datum, restore the missing top-row keys to reach the intended
50-key field, remove
ROW7_AUX, reconnect the matrix, then clear the remaining ERC/DRC issues.