multi-topic, publish from gh-pages branch

.gitea/workflows/gh-pages.yaml

@@ -0,0 +1,52 @@
+name: Build and deploy static pages
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+env:
+  HUGO_VERSION: "0.165.0"
+  # Public URL served by the gitea-pages proxy. Override with a repo variable
+  # (Settings → Actions → Variables → SITE_BASE_URL) if the site moves.
+  SITE_BASE_URL: ${{ vars.SITE_BASE_URL || format('https://pub.sqrt.fr/{0}/', github.repository) }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          # site/themes/PaperMod is a submodule
+          submodules: recursive
+
+      - name: Install Hugo
+        run: |
+          mkdir -p "$HOME/.local/bin"
+          curl -sSfL "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.tar.gz" \
+            | tar -xz -C "$HOME/.local/bin" hugo
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+          "$HOME/.local/bin/hugo" version
+
+      - name: Install site JS dependencies
+        # site/assets/js/calendar.js imports @fullcalendar/* — Hugo's js.Build
+        # resolves those from site/node_modules at build time.
+        working-directory: site
+        run: npm ci
+
+      - name: Build site
+        # Content under site/content/ is generated by ./build.sh and committed,
+        # so CI only renders it — no data fetching happens here.
+        run: hugo --source site --minify --gc --baseURL "$SITE_BASE_URL"
+
+      - name: Deploy site
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          force_orphan: true
+          publish_branch: gh-pages
+          publish_dir: ./site/public