feat: Reject HFP connections to disable phone calls

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

main.py

@@ -13,6 +13,7 @@ from aiomqtt import Client
 from dbus_next.aio import MessageBus
 from dbus_next.service import ServiceInterface, method
 from dbus_next.constants import BusType
+from dbus_next.errors import DBusError
 from dbus_next import Variant
 
 
@@ -27,6 +28,7 @@ AGENT_IFACE = 'org.bluez.Agent1'
 AGENT_MANAGER_IFACE = 'org.bluez.AgentManager1'
 AGENT_PATH = '/io/bluetooth_speaker/agent'
 CAPABILITY = 'DisplayYesNo'
+HFP_UUID = '0000111e-0000-1000-8000-00805f9b34fb'
 
 class Agent(ServiceInterface):
     def __init__(self, interface_name):
@@ -69,8 +71,11 @@ class Agent(ServiceInterface):
 
     @method()
     def AuthorizeService(self, device: 'o', uuid: 's'):
-        logging.info(f"AuthorizeService for {device} with uuid {uuid}")
-        pass
+        logging.info(f"AuthorizeService request for device {device} with UUID {uuid}")
+        if uuid.lower() == HFP_UUID:
+            logging.warning("Rejecting Hands-Free Profile (HFP) connection.")
+            raise DBusError('org.bluez.Error.Rejected', 'HFP profile not supported')
+        logging.info(f"Authorizing service UUID {uuid}")
 
     @method()
     def Cancel(self):