Remove inline docker login from deploy script

Use pre-configured Docker credentials on server instead of passing
Harbor credentials through SSH script, avoiding shell interpolation
issues with special characters in robot account username.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -122,10 +122,7 @@ jobs:
             # Navigate to deployment directory
             cd ${{ secrets.DEPLOY_PATH }}
 
-            # Log in to Harbor (credentials are masked by Gitea Actions)
-            echo "${{ secrets.HARBOR_PASSWORD }}" | docker login ${{ secrets.HARBOR_REGISTRY }} -u ${{ secrets.HARBOR_USERNAME }} --password-stdin
-
-            # Pull the specific image
+            # Pull the specific image (using pre-configured Docker credentials)
             docker pull "$IMAGE"
 
             # Update and restart with new image