fix(ci): split test and gh-pages jobs

Author: Copilot

.github/workflows/test.yml

@@ -14,9 +14,6 @@ concurrency:
 jobs:
   test:
     runs-on: ubuntu-latest
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v1
@@ -26,11 +23,29 @@ jobs:
         run: bun run build
       - name: Run vitest
         run: bun run coverage
+      - name: Upload coverage artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: test
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Download coverage artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage
       - uses: actions/configure-pages@v4
       - uses: actions/upload-pages-artifact@v3
         with:
           path: coverage
       - name: Deploy to GitHub Pages
-        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
         id: deployment
         uses: actions/deploy-pages@v4