dominicrume/cantor8_kya_rails: scoreboard/THIRTEEN-CHECKS.md

# Thirteen Checks scoreboard, run before demo 1 Written rules: PASS (THE-RULES.md, read by agent at boot) 2 Plan before code: PASS (job cards committed before code) 3 Small pieces: PASS (three stages) 4 Route not reflex: PASS (agent prints its plan before acting) 5 Done defined: PASS (each job card