Windowed module protocol: every op admitted inside a 3.4s window after the firmware's observed temp poll (cadence 3.5-4.2s measured, stuck-at-last-fetch stale mechanism proven and avoided), acquire/window with panic on dead heartbeat; noise column shows green on/off cycle phase, cable-missing state unchanged

render.go

@@ -304,6 +304,18 @@ func correctedFlag(v uint64) string {
 	return paint("warn", cYellow)
 }
 
+// Green either way while the cable is present — the cycle's phase is state,
+// not health. Red stays what it was: the cable missing.
+func noiseCell(nv noiseView) string {
+	switch {
+	case nv.missing > 0:
+		return paint("ERR", cRed)
+	case nv.on:
+		return paint("on", cGreen)
+	}
+	return paint("off", cGreen)
+}
+
 // Per-interval rates jitter by a couple of percent at line rate, so green has
 // to cover that. Yellow means a real shortfall, red means badly off.
 const (