make major bonus updates

frontend/src/app.d.ts

@@ -1,4 +1,5 @@
 import { PocketBase } from 'pocketbase';
+import type { Session } from './lib/types';
 
 // See https://svelte.dev/docs/kit/types#app.d.ts
 // for information about these interfaces
@@ -8,6 +9,7 @@ declare global {
 		// interface Error {}
 		interface Locals {
 			pb: PocketBase;
+			session?: Session | null;
 		}
 		// interface PageData {}
 		// interface PageState {}