fix(ci): publish-pypi.yml deploy-pages environment 移到 job 级

workflow 语法错误: environment 写在 step 级(actions/deploy-pages@v4 下面),
导致 workflow 解析失败(HTTP 422: Unexpected value 'environment'),
release published 和 workflow_dispatch 都触发不了。

修复: environment 移到 deploy-pages job 级(deploy-pages 本就需要 github-pages
environment 做 Pages 部署鉴权),step 只保留 uses: actions/deploy-pages@v4。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: AgentArcLab

.github/workflows/publish-pypi.yml

@@ -61,6 +61,9 @@ jobs:
   deploy-pages:
     needs: publish
     runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deploy.outputs.page_url }}
     defaults:
       run:
         working-directory: docs-site
@@ -94,6 +97,3 @@ jobs:
       - name: Deploy to GitHub Pages
         id: deploy
         uses: actions/deploy-pages@v4
-        environment:
-          name: github-pages
-          url: ${{ steps.deploy.outputs.page_url }}