Adds the `count N` command to the host matrix-relay, allowlists + auto-approves matrix_count for the default agent, and steers the led-matrix skill to use matrix_count for "count to N once a second" instead of flashing a sketch (which fails in the App Lab container). Pairs with the zeroclaw sketch/tool changes. Co-Authored-By: Claude Opus 4.8 <[email protected]>