Unplugged-cable behavior fixed end to end: heat grid rolls on the slot boundary (view computes the newest slot from the draw clock; history sampled every frame so slots color within a frame; noise phase displayed as commanded straight from the shared clock — radiating and the per-slot vote deleted), SNR ghost panic disambiguated via the PMA 1.1 latch (link dropped mid-read discards the batch, ghost on a proven-up link still dies), measure skips the 25s relink wait when the ECD verdict says faulted and the header says MEASURING instead of GOOD while a diag runs, RollBall mailbox deadline resized to 10s from bench measurement (<25ms linked, ~220ms no-link, >3s during a live plug's training; docs/modules/wiitek updated)

history.go

@@ -5,10 +5,11 @@ import (
 	"time"
 )
 
-// The panel's recent-history ring: 18 slots of 5 seconds, sampled once a
-// second from the same figures the console row prints. Slots are wall-time
-// and survive a reset — recently is recently, whatever the counters were
-// re-based to — while the since-reset aggregates and fault ages clear.
+// The panel's recent-history ring: 18 slots of 5 seconds, sampled every drawn
+// frame from the same figures the panel paints, so a slot has data within one
+// frame of being born. Slots are wall-time and survive a reset — recently is
+// recently, whatever the counters were re-based to — while the since-reset
+// aggregates and fault ages clear.
 const (
 	histSlots    = 18
 	histSlotSpan = 5 * time.Second
@@ -39,15 +40,12 @@ type histSlot struct {
 	rateLow   bool
 	haveSNR   bool
 	snrMin    float64
-	noiseOn   int
-	noiseN    int
 }
 
 type history struct {
 	mu    sync.Mutex
 	start time.Time
 	slots [histSlots]histSlot
-	seq   int64
 
 	prevValid     bool
 	prevSince     errs
@@ -80,13 +78,12 @@ func delta(now, prev uint64) uint64 {
 	return now - prev
 }
 
-func (h *history) sample(now time.Time, v view, phy phyDisplay, nv noiseView,
+func (h *history) sample(now time.Time, v view, phy phyDisplay,
 	measuring bool, target float64) {
 	h.mu.Lock()
 	defer h.mu.Unlock()
 
-	h.seq = int64(now.Sub(h.start) / histSlotSpan)
-	s := h.slot(h.seq)
+	s := h.slot(int64(now.Sub(h.start) / histSlotSpan))
 
 	if h.prevValid {
 		for i, c := range faultClasses {
@@ -118,10 +115,6 @@ func (h *history) sample(now time.Time, v view, phy phyDisplay, nv noiseView,
 			}
 		}
 	}
-	s.noiseN++
-	if nv.on {
-		s.noiseOn++
-	}
 }
 
 // The wall-time slots stay: recently is recently. Everything judged against
@@ -146,12 +139,16 @@ type histView struct {
 	sinceSNRMin  float64
 }
 
-func (h *history) view() histView {
+// The window's newest column is the slot containing now, taken from the draw
+// clock rather than the last sample: the grid then rolls on the slot boundary
+// itself — the same instant the noise cycle flips.
+func (h *history) view(now time.Time) histView {
 	h.mu.Lock()
 	defer h.mu.Unlock()
+	newest := int64(now.Sub(h.start) / histSlotSpan)
 	var out histView
 	for k := 0; k < histSlots; k++ {
-		seq := h.seq - int64(histSlots-1-k)
+		seq := newest - int64(histSlots-1-k)
 		if seq < 0 {
 			continue
 		}