Bugs-evident cleanup: cable-measure failure is fatal with its reason (failed/fail pretend-path and dead relinked plumbing deleted), bcm.command refuses partial SETs (0 or 5 params, stale-DATA trap made structural), BOOT gains a patched-ixgbe check naming stock-driver boots, panel fault rows matched by label and console rows strict on column count, phy.go split into sff/bcm/rollball and main.go's direction machinery into direction.go (pure moves), input events decoded via encoding/binary, gofmt; verified on hardware (20.00G, zero errors, ECD 41m)

ui.go

@@ -492,7 +492,16 @@ func (d *display) drawRows(v view, phy phyDisplay, measuring bool, nv noiseView,
 				d.colMark(resetR, y, markCheck, uiGood)
 			}
 		default:
-			f := i - 1
+			f := -1
+			for j, c := range faultClasses {
+				if c.label == label {
+					f = j
+					break
+				}
+			}
+			if f < 0 {
+				panic("panel row " + label + " has no fault class")
+			}
 			if n := faultClasses[f].get(v.window); n > 0 {
 				d.colText(d.textB, nowR, y, scaleCount(n), uiCrit)
 			} else {