Playbook for the always-on norm "never report success from a proxy signal — assert the actual effect or artifact". Load when a status signal (green CI step, HTTP 200, "accepted", exit 0, progress bar) is about to be read as success, when a step's entire output is a side effect, or when routed here from the one-real-ride done gate. Does not fire on test-suite results (prove-it-can-fail) or on declaring a whole feature done (one-real-ride owns that moment).
