redo of entire app

initialise-databse.sql

@@ -0,0 +1,3 @@
+INSERT INTO users (username, password, role) VALUES ('admin', 'hashed_password', 'admin');
+INSERT INTO teams (name, code) VALUES ('Team Alpha', 'ALPHA123');
+INSERT INTO clues (description, team_id) VALUES ('Find the red door', 1);