fix(web): add social preview image assets

src/web/routes.rs

@@ -95,6 +95,7 @@ pub fn create_router(state: AppState) -> Router {
         .route("/admin/pages/delete/:id", post(admin::pages_delete))
         .route("/admin/analytics/url/:id", get(admin::url_analytics_get))
         .route("/deploy.sh", get(pages::deploy_script))
+        .route("/images/preview.png", get(pages::social_preview))
         .route(
             "/admin/analytics/url/:id/export/csv",
             get(admin::url_analytics_csv_export),