Slightly working

src/routes/+layout.server.ts

@@ -0,0 +1,10 @@
+// src/routes/+layout.server.ts
+import type { LayoutServerLoad } from './$types'
+export const load: LayoutServerLoad = async ({ locals: { safeGetSession }, cookies }) => {
+  const { session, user } = await safeGetSession()
+  return {
+    session,
+    user,
+    cookies: cookies.getAll(),
+  }
+}