actions/configure-pages fails with "Get Pages site failed" on a repository
where Pages has never been turned on, which stopped the first run after a green
test suite. `enablement: true` creates the Pages site with the `pages: write`
permission the workflow already holds, so the first push configures itself.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TL4uoCCvX2CqHWT8p3tLd7

diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index f70e09f..a6fac23 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -48,6 +48,11 @@ jobs:
       - name: Configure Pages
         id: pages
         uses: actions/configure-pages@v5
+        with:
+          # Turn Pages on for the repository if it is not already, rather than
+          # failing the build until somebody visits the settings page. Needs
+          # the `pages: write` permission granted above.
+          enablement: true
 
       - name: Build
         env: