Function emit_fabric_soc 

pub fn emit_fabric_soc() -> String

The flashable SoC: registered (cfg, inputs) in, the combinational config_fabric, a cycles counter, and registered (result, cycles, done) out. On rst release the array’s output settles in one clock; the SoC latches it, sets cycles = 1 (the honest cost of a spatial decision), and raises done. Synthesizable as-is — the inputs wire to switches / a UART loader and the outputs to LEDs / a UART readback for bring-up.