fix: improve maintenance and synchronize live conversations

backend/alembic/env.py

@@ -16,13 +16,11 @@ limitations under the License.
 
 # alembic/env.py
 
-import os
 from logging.config import fileConfig
 from sqlalchemy import engine_from_config
 from sqlalchemy import pool
 from alembic import context
-from app.database import Base
-from app.models import Organization, User, Role, AIConfig, Agent, Knowledge, KnowledgeToAgent, AIModelType
+from app import models
 from app.core.config import settings
 
 # this is the Alembic Config object, which provides access to the values within the .ini file
@@ -38,7 +36,7 @@ if config.config_file_name is not None:
 
 # add your model's MetaData object here
 # for 'autogenerate' support
-target_metadata = Base.metadata
+target_metadata = models.Base.metadata
 
 
 def run_migrations_offline():