style(client.py): correct property typing

src/judas_server/backend/client.py

@@ -14,7 +14,10 @@ class Client:
     """Represents a client."""
 
     def __init__(
-        self, id: str | None, addr: tuple[str, int], socket: socket.socket
+        self,
+        id: str | None,
+        addr: tuple[str, int] | None,
+        socket: socket.socket | None,
     ) -> None:
         """Initialize the client.
 
@@ -33,13 +36,15 @@ class Client:
         self.last_seen: float = 0.0  # unix timestanp of last inbound message
         self.status: ClientStatus = ClientStatus.PENDING
 
-        self.socket: socket.socket = socket
+        self.socket: socket.socket | None = socket
-        self.addr: tuple[str, int] = addr
+        self.addr: tuple[str, int] | None = addr
         self.inbound: bytes = b""
         self.outbound: bytes = b""
 
     def __str__(self) -> str:
+        if self.addr:
             return f"Client({self.id} ({self.addr[0]}:{self.addr[1]}))"
+        return f"Client({self.id} (not connected))"
 
     def __repr__(self) -> str:
         return f"Client({self.id}, {self.addr})"
@@ -47,6 +52,11 @@ class Client:
     def disconnect(self) -> None:
         """Disconnect the client and close the socket."""
         self.logger.debug(f"Disconnecting Client {self}...")
+        if self.socket is None:
+            self.logger.warning(
+                f"Client {self} not connected, nothing to disconnect."
+            )
+            return
         try:
             self.socket.close()
         except Exception as e: