26 original computation types + 4 full-width blue edge types + 2 full-width blue corner types.
Blue overhangs the board by half a cell on every edge; orange/purple/final return to the original grid. Outside cells are fixed zero constants in boundary blue routing.
Assembly rule: the six boundary types may be placed only on the declared outer perimeter, facing inward.
On-board padding cells evolve normally; an empty cell is not automatically a zero-to-zero wire.
The supplied glider advances one full generation on the same 5x5 footprint, preserving all five live cells.
For unlimited evolution on the infinite plane, choose more padding or enlarge the board when activity reaches it.
Nominal millimetres, zero mating clearance. New annular purple keys are prototype design choices.
Complete each layer before starting the next; no bridging. Full-width boundary blue types have only 2 or 1 input sockets, all over real cells. Exterior zero outputs are built into their keys; no outside input sockets are left unfilled.
