ci(docs): split validate (fast, all PRs) and deploy (main only) jobs

.github/workflows/docs.yml

@@ -25,26 +25,28 @@ concurrency:
   cancel-in-progress: false
 
 jobs:
-  build:
-    name: Build Documentation
+  validate:
+    name: Validate Documentation
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.11'
+      - run: python docs_check.py
 
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
+  deploy:
+    name: Build and Deploy to GitHub Pages
+    if: github.event_name != 'pull_request'
+    runs-on: ubuntu-latest
+    needs: validate
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
         with:
           node-version: '20'
 
-      - name: Validate docs structure
-        run: python docs_check.py
-
       - name: Export static site
         run: |
           cd docs
@@ -52,25 +54,12 @@ jobs:
           cd ..
           unzip -q export.zip -d site
 
-      - name: Setup Pages
-        if: github.event_name != 'pull_request'
-        uses: actions/configure-pages@v6
+      - uses: actions/configure-pages@v6
 
-      - name: Upload artifact
-        if: github.event_name != 'pull_request'
-        uses: actions/upload-pages-artifact@v5
+      - uses: actions/upload-pages-artifact@v5
         with:
           path: ./site
 
-  deploy:
-    name: Deploy to GitHub Pages
-    if: github.event_name != 'pull_request'
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v5