Revert "dashboard: compute temp alert from contract threshold"

This reverts commit 3c438bd4ac.

firmware/esp32-s3-dashboard/dashboard_config.h

@@ -1,6 +1,6 @@
 #pragma once
 
-static const char *DASHBOARD_VERSION = "0.1.118-temp-alert-local-threshold";
+static const char *DASHBOARD_VERSION = "0.1.117-temp-alert-contract-logic";
 
 // Update these if your Cargo ESP AP credentials are different.
 //static const char *CARGO_WIFI_SSID = "OverlandController";

firmware/esp32-s3-dashboard/esp32-s3-dashboard.ino

@@ -1464,14 +1464,13 @@ static void parse_status_json(const String &body)
             }
 
             float temp_f = (float)(temp["temperature_f"] | 0.0);
-            bool high_alert = temp["high_alert"] | false;
-
-            bool high_alert_enabled = temp["high_alert_enabled"] | false;
-            float high_alert_f = (float)(temp["high_alert_f"] | 9999.0);
-
-            if (high_alert_enabled && temp_f >= high_alert_f) {
-                high_alert = true;
-            }
+            bool high_alert =
+                (temp["high_alert"] | false) ||
+                (
+                    (temp["high_alert_enabled"] | false) &&
+                    !temp["high_alert_f"].isNull() &&
+                    temp_f > (float)(temp["high_alert_f"] | 9999.0)
+                );
 
             if (weather) {
                 outside_status = "OUT ";