feat: Log new devices with '(new)' suffix

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

scan.py

@@ -13,6 +13,8 @@ BLUEZ_SERVICE = 'org.bluez'
 ADAPTER_IFACE = 'org.bluez.Adapter1'
 DEVICE_IFACE = 'org.bluez.Device1'
 
+seen_devices = set()
+
 async def get_adapter(bus):
     """Gets the first Bluetooth adapter found."""
     introspection = await bus.introspect(BLUEZ_SERVICE, '/')
@@ -33,7 +35,12 @@ def on_interfaces_added(path, interfaces):
         address = device_properties.get('Address')
         alias = device_properties.get('Alias')
         if address and alias and alias.value:
-            logging.info(f"Found: {alias.value} ({address.value})")
+            addr_str = address.value
+            if addr_str not in seen_devices:
+                seen_devices.add(addr_str)
+                logging.info(f"Found: {alias.value} ({addr_str}) (new)")
+            else:
+                logging.info(f"Found: {alias.value} ({addr_str})")
 
 async def main():
     """Main function to run the scanner."""