refactor: clients now have a single websocket that handles all rooms the user is in

db/init.sql

@@ -57,7 +57,6 @@ CREATE TABLE IF NOT EXISTS message_ (
 
 CREATE TABLE ws_token_ (
   token TEXT PRIMARY KEY,
-  room_id INT NOT NULL,
   expires_at TIMESTAMPTZ NOT NULL
 );
 

db/mock_data.sql

@@ -29,9 +29,9 @@ INSERT INTO friendship_ (user_first, user_second) VALUES
 INSERT INTO friend_request_ (sender, receiver) VALUES
 (2, 1);  -- Bob sent a friend request to Alice
 
-INSERT INTO ws_token_ (token, room_id, expires_at) VALUES
-('random_token_1', 1, '2025-12-31T23:59:59Z'),
-('random_token_2', 2, '2025-12-31T23:59:59Z');
+INSERT INTO ws_token_ (token, expires_at) VALUES
+('random_token_1', '2025-12-31T23:59:59Z'),
+('random_token_2', '2025-12-31T23:59:59Z');
 
 INSERT INTO room_invite_ (sender, receiver, room) VALUES
 (2, 1, 2);