[FA-misc] Astro migration works, probably want to touchup the frontend but that can be in Phase 4

fictionarchive-web-astro/src/lib/graphql/client.ts

@@ -0,0 +1,21 @@
+import { Client, cacheExchange, fetchExchange } from '@urql/core';
+import { get } from 'svelte/store';
+import { user } from '../auth/authStore';
+
+export function createClient() {
+  return new Client({
+    url: import.meta.env.PUBLIC_GRAPHQL_URI,
+    exchanges: [cacheExchange, fetchExchange],
+    fetchOptions: () => {
+      const currentUser = get(user);
+      return {
+        headers: currentUser?.access_token
+          ? { Authorization: `Bearer ${currentUser.access_token}` }
+          : {},
+      };
+    },
+  });
+}
+
+// Singleton for use in components
+export const client = createClient();