feat: queue-based graph engine

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/core/helper/encrypter.py

@@ -12,8 +12,8 @@ def obfuscated_token(token: str):
 
 
 def encrypt_token(tenant_id: str, token: str):
+    from extensions.ext_database import db
     from models.account import Tenant
-    from models.engine import db
 
     if not (tenant := db.session.query(Tenant).where(Tenant.id == tenant_id).first()):
         raise ValueError(f"Tenant with id {tenant_id} not found")