feat: credit pool (#30720)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

api/models/__init__.py

@@ -60,6 +60,7 @@ from .model import (
     Site,
     Tag,
     TagBinding,
+    TenantCreditPool,
     TraceAppConfig,
     UploadFile,
 )
@@ -177,6 +178,7 @@ __all__ = [
     "Tenant",
     "TenantAccountJoin",
     "TenantAccountRole",
+    "TenantCreditPool",
     "TenantDefaultModel",
     "TenantPreferredModelProvider",
     "TenantStatus",