feat(cms): sync site assets, revalidate webhook, and document download naming

.env.example

@@ -57,3 +57,19 @@ VITE_PUSHER_HOST="${PUSHER_HOST}"
 VITE_PUSHER_PORT="${PUSHER_PORT}"
 VITE_PUSHER_SCHEME="${PUSHER_SCHEME}"
 VITE_PUSHER_APP_CLUSTER="${PUSHER_APP_CLUSTER}"
+
+# Next.js site revalidation
+NEXTJS_REVALIDATE_URL=
+NEXTJS_REVALIDATE_TOKEN=
+
+# Optional: sync uploaded images into Next.js public/ for static serving
+# Example (local): /Users/gbanyan/Project/usher-site/public
+NEXTJS_PUBLIC_PATH=
+NEXTJS_PUBLIC_UPLOAD_PREFIX=uploads
+
+# Optional: auto-commit+push assets in the Next.js repo on upload/import
+NEXTJS_AUTOPUSH_ASSETS=false
+NEXTJS_REPO_PATH=
+NEXTJS_REPO_REMOTE=origin
+NEXTJS_REPO_BRANCH=main
+NEXTJS_REPO_ASSETS_COMMIT_MESSAGE="chore(assets): sync public assets"