Render the forum shell, resources and contacts on the server

src/app.d.ts

@@ -1,10 +1,16 @@
 // See https://svelte.dev/docs/kit/types#app.d.ts
 // for information about these interfaces
+import type { ForumShell, Profiles } from "$lib/forum/snapshot";
+
 declare global {
   namespace App {
     // interface Error {}
     // interface Locals {}
-    // interface PageData {}
+    // Server-rendered snapshots; null in the browser and in client-only builds
+    interface PageData {
+      shell?: ForumShell | null;
+      profiles?: Profiles | null;
+    }
     // interface PageState {}
     // interface Platform {}
   }