Change relay polling interval to 10 minutes

Co-authored-by: dorkmo <[email protected]>

Author: Copilot

TankAlarm-112025-Client-BluesOpta/RELAY_CONTROL.md

@@ -132,7 +132,7 @@ Commands are sent via Blues Notecard to `device:<clientUID>:relay.qi`:
 
 ### Client Polling
 
-- Client polls `relay.qi` every 1 hour
+- Client polls `relay.qi` every 10 minutes
 - Commands are deleted after processing
 - Invalid commands are logged and ignored
 

TankAlarm-112025-Client-BluesOpta/TankAlarm-112025-Client-BluesOpta.ino

@@ -366,7 +366,7 @@ void loop() {
     pollForConfigUpdates();
   }
 
-  if (now - gLastRelayCheckMillis >= 3600000UL) {  // Check every 1 hour
+  if (now - gLastRelayCheckMillis >= 600000UL) {  // Check every 10 minutes
     gLastRelayCheckMillis = now;
     pollForRelayCommands();
   }