ci: deploy Pages via GitHub Actions (legacy builder stalled on old commit)

.github/workflows/pages.yml

@@ -0,0 +1,43 @@
+name: Deploy to GitHub Pages
+
+# Legacy branch-based Pages builds stalled on this repo (stuck rebuilding an old
+# commit and never advancing to main's tip). This Actions-based deploy publishes
+# the repo root on every push to main — reliable and re-runnable via the Actions
+# tab. The CNAME file in the repo root preserves the bauhaus.such.software domain.
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow one concurrent deployment; a newer push supersedes an in-flight one.
+concurrency:
+  group: pages
+  cancel-in-progress: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Configure Pages
+        uses: actions/configure-pages@v5
+
+      - name: Upload site artifact (repo root)
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: .
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4