feat: Map 0 control input to 0 output

firmware/firmware.ino

@@ -182,8 +182,13 @@ void onMqttMessage(int messageSize) {
 }
 
 void processControlCommand(int64_t num) {
-	// Map the input value (0-100) to the output range (60-140)
-	long mappedValue = map(num, 0, 100, 60, 140);
+	long mappedValue;
+	if (num == 0) {
+		mappedValue = 0; // Special case: 0 maps to 0
+	} else {
+		// Map the input value (0-100) to the output range (60-140)
+		mappedValue = map(num, 0, 100, 60, 140);
+	}
 
 	Serial.print("[MEGA] Received power: ");
 	Serial.print(num);