feat(web): fetch-based api client with 401 handling and tests

web/vitest.config.ts

@@ -0,0 +1,16 @@
+import { defineConfig } from 'vitest/config'
+import vue from '@vitejs/plugin-vue'
+import { fileURLToPath, URL } from 'node:url'
+
+export default defineConfig({
+  plugins: [vue()],
+  test: {
+    environment: 'happy-dom',
+    globals: true,
+  },
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url)),
+    },
+  },
+})