fix: escape YAML alias in build-and-notify pr body (use --body-file)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/build-and-notify.yml

@@ -134,13 +134,12 @@ jobs:
           git add apps/agent-platform/overlays/prod/kustomization.yaml
           git commit -m "release(agent-platform): ${SHORT_SHA}"
           git push origin "${BRANCH}"
+          printf 'Automated release PR from BrunoGao/agent-platform@%s\n\nAPI `harbor.eu.lingjingwanxiang.cn/ljwx/agent-platform-api:%s`\n' \
+            "${GIT_SHA}" "${SHORT_SHA}" > /tmp/pr-body.txt
           gh pr create \
             --repo "BrunoGaoSZ/ljwx-deploy" \
             --title "release(agent-platform): ${SHORT_SHA}" \
-            --body "Automated release PR from BrunoGao/agent-platform@${GIT_SHA}
-
-**API** \`harbor.eu.lingjingwanxiang.cn/ljwx/agent-platform-api:${SHORT_SHA}\`
-" \
+            --body-file /tmp/pr-body.txt \
             --base main \
             --head "${BRANCH}"