Feat/environment variables in workflow (#6515)

Co-authored-by: JzoNg <jzongcode@gmail.com>

api/services/account_service.py

@@ -47,7 +47,7 @@ class AccountService:
     )
 
     @staticmethod
-    def load_user(user_id: str) -> Account:
+    def load_user(user_id: str) -> None | Account:
         account = Account.query.filter_by(id=user_id).first()
         if not account:
             return None
@@ -55,7 +55,7 @@ class AccountService:
         if account.status in [AccountStatus.BANNED.value, AccountStatus.CLOSED.value]:
             raise Unauthorized("Account is banned or closed.")
 
-        current_tenant = TenantAccountJoin.query.filter_by(account_id=account.id, current=True).first()
+        current_tenant: TenantAccountJoin = TenantAccountJoin.query.filter_by(account_id=account.id, current=True).first()
         if current_tenant:
             account.current_tenant_id = current_tenant.tenant_id
         else: