lots of changes

plugins/auth/models.py

@@ -15,9 +15,21 @@ class User(db.Model, UserMixin):
     excluded_from_analytics = db.Column(db.Boolean, default=False)
     created_at = db.Column(db.DateTime, default=datetime.utcnow)
 
-    # Optional: relationship to submissions
-    submissions = db.relationship('Submission', backref='user', lazy=True)
-    
+    # Use back_populates, not backref
+    submitted_submissions = db.relationship(
+        "Submission",
+        foreign_keys="Submission.user_id",
+        back_populates="submitter",
+        lazy=True
+    )
+
+    reviewed_submissions = db.relationship(
+        "Submission",
+        foreign_keys="Submission.reviewed_by",
+        back_populates="reviewer",
+        lazy=True
+    )
+
     def set_password(self, password):
         self.password_hash = generate_password_hash(password)