diff --git a/.gitea/workflows/cd.yaml b/.gitea/workflows/cd.yaml
index 39469d37..7502d42a 100644
--- a/.gitea/workflows/cd.yaml
+++ b/.gitea/workflows/cd.yaml
@@ -16,8 +16,9 @@ on:
       # 只有實際影響部署的程式碼才觸發 CD
       - 'apps/**'
       - 'k8s/**'
-      - '.gitea/workflows/**'
       - '.dockerignore'
+      # Workflow-only changes do not rebuild runtime images. Use workflow_dispatch
+      # when an operator explicitly wants to test the CD pipeline itself.
       # docs/、memory/、ADR 等不觸發
       # ops/monitoring/alerts-unified.yml 由 deploy-alerts.yaml 獨立處理 (I3)
   workflow_dispatch: