feat(db): 迁移里的数据库角色名改为环境变量注入

backend/alembic/versions/0005_attachments.py

@@ -11,6 +11,8 @@ from sqlalchemy.dialects.postgresql import UUID as PgUUID
 
 from alembic import op
 
+from app.roles import APP_ROLE
+
 revision = "0005"
 down_revision = "0004"
 branch_labels = None
@@ -55,7 +57,7 @@ def upgrade() -> None:
         "ALTER TABLE attachment ENABLE ROW LEVEL SECURITY",
         "CREATE POLICY attachment_isolation ON attachment "
         "USING (workspace_id = app_ws_id()) WITH CHECK (workspace_id = app_ws_id())",
-        "GRANT SELECT, INSERT, UPDATE, DELETE ON attachment TO dadao_app",
+        f"GRANT SELECT, INSERT, UPDATE, DELETE ON attachment TO {APP_ROLE}",
     ):
         op.execute(statement)