feat(auth): implement JWT authentication with secure password hashing

backend/hermes/app/repositories/user_repository.py

@@ -2,6 +2,7 @@ from sqlalchemy.orm import Session
 
 from app.models.user import User
 from app.schemas.user import UserCreate
+from app.core.security import hash_password
 
 
 class UserRepository:
@@ -14,10 +15,10 @@ class UserRepository:
     def create(db: Session, user: UserCreate):
 
         db_user = User(
-            username=user.username,
-            email=user.email,
-            password_hash=user.password
-        )
+    username=user.username,
+    email=user.email,
+    password_hash=hash_password(user.password),
+)
 
         db.add(db_user)
         db.commit()