works

app/models.py

@@ -1,19 +1,24 @@
-from app import db
 from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import declarative_base
+from flask_sqlalchemy import SQLAlchemy
+
 import uuid
 
-class User(db.Model):
+Base = declarative_base()
+db = SQLAlchemy(model_class=Base)
+
+class User(Base):
     __tablename__ = 'users'
-    id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
     email = db.Column(db.String(255), unique=True, nullable=False)
     # Placeholders for Milestone 1
     password_hash = db.Column(db.LargeBinary) 
     imap_config = db.Column(db.JSON) # Using db.JSON instead of db.JSONB for compatibility
 
-class Folder(db.Model):
+class Folder(Base):
     __tablename__ = 'folders'
-    id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
-    user_id = db.Column(UUID(as_uuid=True), db.ForeignKey('users.id'), nullable=False)
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
     name = db.Column(db.String(255), nullable=False)
     rule_text = db.Column(db.Text)
     priority = db.Column(db.Integer)