fix(dashboard): keep programmable stage list usable after PaaS publish (#3165)

Why this change was needed:
Publishing a programmable gateway from the developer center creates a
Release but no ProgrammableGatewayDeployHistory. The stage overview then
crashed when comparing deploy_history.version.

What changed:
- Treat a missing deploy history as not deploying from the gateway
- Keep empty deploy-history objects so serializers do not receive None
- Add a regression test for the PaaS-only publish path

Problem solved:
The environment overview no longer returns 500, so users can open the
page and publish from the gateway after a developer-center release.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: wklken

src/dashboard/apigateway/apigateway/biz/programmable/releaser.py

@@ -195,6 +195,7 @@ def get_stage_deploy_status(gateway: Gateway, stage_id: int, user_credentials: U
                     gateway=gateway, stage_id=stage_id, version=stage_release["resource_version_display"]
                 ).first()
                 or deploy_history  # 回退到最新记录
+                or last_deploy_history  # 从开发者中心发布时可能没有 deploy history
             )
             # 查询当前生效环境的 release history
             last_release_history = ReleaseHistory.objects.filter(
@@ -204,7 +205,8 @@ def get_stage_deploy_status(gateway: Gateway, stage_id: int, user_credentials: U
                 last_publish_status = ReleaseHandler.get_release_status(last_release_history.id)
 
             # 如果 stage_release 的版本和 deploy_history 的第一个不一致，说明正在发布
-            if stage_release["resource_version_display"] != deploy_history.version:
+            # 从开发者中心直接发布时可能没有 deploy_history
+            if deploy_history and stage_release["resource_version_display"] != deploy_history.version:
                 latest_deploy_history = deploy_history
                 latest_publish_status = ReleaseHistoryStatusEnum.DOING.value
 

src/dashboard/apigateway/apigateway/tests/biz/programmable/test_releaser.py

@@ -22,7 +22,8 @@
 
 from apigateway.apps.programmable_gateway.models import ProgrammableGatewayDeployHistory
 from apigateway.biz.programmable import ProgrammableGatewayReleaser
-from apigateway.core.models import Gateway, Stage
+from apigateway.common.tenant.user_credentials import UserCredentials
+from apigateway.core.models import Gateway, Release, ResourceVersion, Stage
 from apigateway.tests.utils.testing import dummy_time
 
 pytestmark = pytest.mark.django_db
@@ -118,3 +119,21 @@ def test_filter_deploy_history(self):
                 gateway, fuzzy=test.get("fuzzy", True), **test["params"]
             )
             assert result.count() == test["expected"]["count"]
+
+    def test_get_stage_deploy_status_without_deploy_history_when_stage_released(self):
+        """从开发者中心发布后，网关侧可能只有 Release 而没有 DeployHistory。"""
+        gateway = G(Gateway)
+        stage = G(Stage, gateway=gateway, status=1)
+        resource_version = G(ResourceVersion, gateway=gateway, version="1.0.0")
+        G(Release, gateway=gateway, stage=stage, resource_version=resource_version)
+        user_credentials = UserCredentials(credentials="token", tenant_id="default")
+
+        result = ProgrammableGatewayReleaser.get_stage_deploy_status(gateway, stage.id, user_credentials)
+
+        assert result["latest_publish_status"] == ""
+        assert result["last_publish_status"] == ""
+        assert result["latest_history_id"] == 0
+        assert result["last_deploy_history"] is not None
+        assert result["last_deploy_history"].pk is None
+        assert result["latest_deploy_history"] is not None
+        assert result["latest_deploy_history"].pk is None