ci: run the slow e2e tests after the image builds (a parallel run got the backend AOT compile OOM-killed)

.woodpecker/dev-image.yml

@@ -67,3 +67,18 @@ steps:
     commands:
       - bash ci/build-dev-image.sh probe
     depends_on: []
+
+  # 慢的端到端测试：等三个镜像都构建、推送完再跑，不和 NativeAOT 编译抢内存（同时跑过一次，Backend 的 AOT 编译被 OOM 杀掉了）。
+  # 它失败不影响已经推出去的镜像，只让流水线变红。没带 [CI] 的推送由 e2e.yml 跑。
+  - name: backend-e2e-tests
+    image: bash
+    when:
+      - evaluate: 'not (CI_COMMIT_MESSAGE contains "[SKIP TESTS]")'
+    environment:
+      NUGET_PACKAGES: /home/justme/.nuget/packages
+    commands:
+      - bash ci/verify-backend.sh slow
+    depends_on:
+      - build-linux-amd64-backend
+      - build-linux-amd64-agent
+      - build-linux-amd64-probe