Add server.address property and update issuer field in LoginController to use dynamic server address. Modify SQL query in PrivilegedUserMapper to simplify permissions retrieval.

database/src/main/java/com/alttd/altitudeweb/database/web_db/PrivilegedUserMapper.java

@@ -11,14 +11,13 @@ public interface PrivilegedUserMapper {
     /**
      * Retrieves a user by their UUID along with their permissions
      * @param uuid The UUID of the user to retrieve
-     * @return The PrivilegedUser with their permissions, or null if not found
+     * @return The optional PrivilegedUser with their permissions
      */
     @Select("""
-            SELECT privileged_users.id, privileged_users.uuid, privileges.privileges as permission
-            FROM privileged_users
-            LEFT JOIN privileges ON privileged_users.id = privileges.user_id
-            WHERE privileged_users.uuid = #{uuid}
-            """)
+        SELECT id, uuid
+        FROM privileged_users
+        WHERE uuid = #{uuid}
+        """)
     @Results({
             @Result(property = "id", column = "id"),
             @Result(property = "uuid", column = "uuid"),