feat: fetch homepage.json from node jail before build

Adds a pre-build SCP step to pull the live homepage config from the
node jail, so GitHub Actions always builds with the latest admin-saved
config instead of the stale committed version.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -21,6 +21,16 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Fetch homepage config from node jail
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_rsa
+          chmod 600 ~/.ssh/id_rsa
+          mkdir -p content/.indiekit
+          scp -P 222 -o StrictHostKeyChecking=no \
+            ${{ secrets.SSH_USER }}@${{ secrets.SSH_HOST }}:/usr/local/bastille/jails/node/root/usr/local/indiekit/content/.indiekit/homepage.json \
+            content/.indiekit/homepage.json
+
       - name: Build CSS
         run: npm run build:css