reenabled admin area; outfitted apps.lyric.models w. AbstractBaseUser instead of custom user class; many other fns & several models updated to accomodate, such as set_unusable_password() method to base user model; reset staging db to prepare for refreshed lyric migrations to accomodate for retrofitted pw field

src/functional_tests/management/commands/create_session.py

@@ -1,5 +1,10 @@
 from django.conf import settings
-from django.contrib.auth import BACKEND_SESSION_KEY, SESSION_KEY, get_user_model
+from django.contrib.auth import (
+    BACKEND_SESSION_KEY,
+    HASH_SESSION_KEY,
+    SESSION_KEY,
+    get_user_model,
+)
 from django.contrib.sessions.backends.db import SessionStore
 from django.core.management.base import BaseCommand
 
@@ -18,6 +23,7 @@ def create_pre_authenticated_session(email):
     user = User.objects.create(email=email)
     session = SessionStore()
     session[SESSION_KEY] = str(user.pk)  # Convert UUID to string for JSON serialization
-    session[BACKEND_SESSION_KEY] = settings.AUTHENTICATION_BACKENDS[0]
+    session[BACKEND_SESSION_KEY] = "apps.lyric.authentication.PasswordlessAuthenticationBackend"
+    session[HASH_SESSION_KEY] = user.get_session_auth_hash()
     session.save()
     return session.session_key