succd: Update rough vacuum hysteresis once more

We see fluctuation slightly above 4e-2 mbar so let's increase the
hysteresis value a bit more.

succbone/succd/index.html

@@ -410,6 +410,15 @@ window.addEventListener("load", (_) => {
         socket.addEventListener("close", (event) => {
             status.innerHTML = "Offline";
             status.style = colors.highlightFault;
+
+            // Indicate all process values as unknown
+
+            [failsafe, highpressure, rp, dp, trough, thigh, volts, mbar].forEach((el) => {
+                if (!el.innerHTML.includes("??")) {
+                    el.innerHTML += "??";
+                }
+            });
+
             if (connected) {
                 console.log("Socket dead, reconnecting...");
             }

succbone/succd/main.go

@@ -14,7 +14,7 @@ var (
 	flagFake                             bool
 	flagListenHTTP                       string
 	flagPressureThresholdRough           = ScientificNotationValue(1e-1)
-	flagPressureThresholdRoughHysteresis = ScientificNotationValue(2e-2)
+	flagPressureThresholdRoughHysteresis = ScientificNotationValue(3e-2)
 	flagPressureThresholdHigh            = ScientificNotationValue(1e-4)
 	flagPressureThresholdHighHysteresis  = ScientificNotationValue(2e-5)
 )