test: add notification preferences tests

server/vitest.config.js

@@ -0,0 +1,17 @@
+import path from 'node:path'
+import { defineConfig } from 'vitest/config'
+
+const projectRoot = path.resolve(__dirname, '..')
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      '@shared': path.resolve(projectRoot, 'shared'),
+    },
+  },
+  server: {
+    fs: {
+      allow: [projectRoot],
+    },
+  },
+})