ci: add GitHub Pages website deployment

- Add website.yml workflow to build and deploy docs with dodeca
- Add CNAME for styx.bearcove.eu custom domain
- Triggers on changes to docs/, .config/dodeca.yaml, or workflow

Author: fasterthanlime

.github/workflows/website.yml

@@ -0,0 +1,54 @@
+name: Website
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'docs/**'
+      - '.config/dodeca.yaml'
+      - '.github/workflows/website.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: depot-ubuntu-24.04-16
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install dodeca
+        run: |
+          curl --proto '=https' --tlsv1.2 -LsSf https://github.com/bearcove/dodeca/releases/latest/download/dodeca-installer.sh | sh
+
+      - name: Build website
+        run: ~/.cargo/bin/ddc build
+
+      - name: Copy CNAME to output
+        run: cp CNAME docs/public/
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs/public
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: depot-ubuntu-24.04
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

CNAME

@@ -0,0 +1 @@
+styx.bearcove.eu