raise username length cap

app/auth.py

@@ -46,10 +46,12 @@ def create_session(user_id, temporary=False):
     })
 
 def parse_username(username: str) -> Tuple[str, str]:
+    """first is the unmodified name/display name, second is username"""
     if len(username) < 3:
         raise ValueError
+
     invalid_regex = r'[^a-zA-Z0-9_-]'
-    return username, re.sub(invalid_regex, '_', username.lower())[:20]
+    return username, re.sub(invalid_regex, '_', username.lower())[:24]
 
 def is_password_valid(password: str) -> bool:
     return re.match(r'^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[\W_])(?!.*\s).{10,255}$', password) is not None