diff --git a/app.config.ts b/app.config.ts
new file mode 100644
index 0000000..1e58d65
--- /dev/null
+++ b/app.config.ts
@@ -0,0 +1,7 @@
+export default defineAppConfig({
+  ui: {
+    primary: "violet",
+    gray: "neutral",
+    strategy: "class",
+  },
+});
diff --git a/app/app.vue b/app/app.vue
index 09f935b..ae0d903 100644
--- a/app/app.vue
+++ b/app/app.vue
@@ -1,6 +1,20 @@
 <template>
-  <div>
+  <UApp>
+    <UNotifications />
+    <UContainer>
+      <header class="py-4 flex items-center justify-between">
+        <div class="flex items-center gap-2">
+          <UIcon name="i-heroicons-rocket-launch" class="text-primary-500" />
+          <h1 class="font-semibold">Urgent Tools</h1>
+        </div>
+        <ColorModeToggle />
+      </header>
+      <NuxtPage />
+    </UContainer>
     <NuxtRouteAnnouncer />
-    <NuxtWelcome />
-  </div>
+  </UApp>
 </template>
+
+<script setup lang="ts">
+// noop
+</script>
diff --git a/app/components/ColorModeToggle.vue b/app/components/ColorModeToggle.vue
new file mode 100644
index 0000000..868603f
--- /dev/null
+++ b/app/components/ColorModeToggle.vue
@@ -0,0 +1,17 @@
+<template>
+  <UButton color="gray" variant="ghost" @click="toggle">
+    <UIcon :name="icon" class="w-5 h-5" />
+  </UButton>
+</template>
+
+<script setup lang="ts">
+const colorMode = useColorMode();
+const icon = computed(() =>
+  colorMode.value === "dark"
+    ? "i-heroicons-moon-20-solid"
+    : "i-heroicons-sun-20-solid"
+);
+const toggle = () => {
+  colorMode.preference = colorMode.value === "dark" ? "light" : "dark";
+};
+</script>
diff --git a/assets/css/main.css b/assets/css/main.css
new file mode 100644
index 0000000..e4ea4c3
--- /dev/null
+++ b/assets/css/main.css
@@ -0,0 +1,12 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+:root {
+  --ui-primary: 237 85% 62%;
+}
+
+.dark {
+  --ui-primary: 237 85% 70%;
+}
+
diff --git a/composables/useFixtureIO.ts b/composables/useFixtureIO.ts
new file mode 100644
index 0000000..8a5ef41
--- /dev/null
+++ b/composables/useFixtureIO.ts
@@ -0,0 +1,25 @@
+import { useCounterStore } from '~/stores/counter'
+
+export type AppSnapshot = {
+  counter: { count: number }
+}
+
+export function useFixtureIO() {
+  const exportAll = (): AppSnapshot => {
+    const counter = useCounterStore()
+    return {
+      counter: { count: counter.count }
+    }
+  }
+
+  const importAll = (snapshot: AppSnapshot) => {
+    const counter = useCounterStore()
+    if (snapshot?.counter) {
+      counter.$patch({ count: snapshot.counter.count ?? 0 })
+    }
+  }
+
+  return { exportAll, importAll }
+}
+
+
diff --git a/nuxt.config.ts b/nuxt.config.ts
index b6baa24..63867d7 100644
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -1,5 +1,27 @@
+import { defineNuxtConfig } from "nuxt/config";
 // https://nuxt.com/docs/api/configuration/nuxt-config
 export default defineNuxtConfig({
-  compatibilityDate: '2025-07-15',
-  devtools: { enabled: true }
-})
+  compatibilityDate: "2025-07-15",
+  devtools: { enabled: true },
+
+  // Keep SSR on (default) with Nitro server
+  ssr: true,
+
+  // Strict TypeScript
+  typescript: {
+    strict: true,
+  },
+
+  // Global CSS (Tailwind for @nuxt/ui)
+  css: ["~/assets/css/main.css"],
+
+  modules: [
+    "@pinia/nuxt",
+    "@nuxt/ui",
+    "@nuxtjs/color-mode",
+    "@nuxtjs/tailwindcss",
+  ],
+
+
+  // Nuxt UI minimal theme customizations live in app.config.ts
+});
diff --git a/package-lock.json b/package-lock.json
index 81b0ae5..67dd9a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,6 +19,7 @@
       },
       "devDependencies": {
         "@playwright/test": "^1.54.2",
+        "@tailwindcss/postcss": "^4.1.11",
         "@vitejs/plugin-vue": "^6.0.1",
         "@vue/test-utils": "^2.4.6",
         "typescript": "^5.9.2",
diff --git a/package.json b/package.json
index 89c20e3..c885af7 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,10 @@
     "dev": "nuxt dev",
     "generate": "nuxt generate",
     "preview": "nuxt preview",
-    "postinstall": "nuxt prepare"
+    "postinstall": "nuxt prepare",
+    "test": "vitest --run",
+    "test:ui": "vitest",
+    "test:e2e": "playwright test"
   },
   "dependencies": {
     "@nuxt/ui": "^3.3.0",
@@ -22,6 +25,7 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.54.2",
+    "@tailwindcss/postcss": "^4.1.11",
     "@vitejs/plugin-vue": "^6.0.1",
     "@vue/test-utils": "^2.4.6",
     "typescript": "^5.9.2",
diff --git a/pages/index.vue b/pages/index.vue
new file mode 100644
index 0000000..8bb75c4
--- /dev/null
+++ b/pages/index.vue
@@ -0,0 +1,62 @@
+<template>
+  <section class="py-8 space-y-6">
+    <div class="flex items-center justify-between">
+      <h2 class="text-2xl font-semibold">Welcome</h2>
+      <div class="flex gap-2">
+        <UButton
+          icon="i-heroicons-arrow-down-tray"
+          color="gray"
+          @click="onExport"
+          >Export JSON</UButton
+        >
+        <UButton icon="i-heroicons-arrow-up-tray" color="gray" @click="onImport"
+          >Import JSON</UButton
+        >
+      </div>
+    </div>
+
+    <UCard>
+      <div class="flex items-center gap-3">
+        <UButton icon="i-heroicons-plus" @click="store.increment"
+          >Increment</UButton
+        >
+        <div class="text-sm text-gray-500">
+          Count: {{ store.count }} (x2: {{ store.doubleCount }})
+        </div>
+      </div>
+    </UCard>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { useCounterStore } from "~/stores/counter";
+const store = useCounterStore();
+
+const onExport = () => {
+  const data = exportAll();
+  const blob = new Blob([JSON.stringify(data, null, 2)], {
+    type: "application/json",
+  });
+  const url = URL.createObjectURL(blob);
+  const a = document.createElement("a");
+  a.href = url;
+  a.download = "urgent-tools.json";
+  a.click();
+  URL.revokeObjectURL(url);
+};
+
+const onImport = async () => {
+  const input = document.createElement("input");
+  input.type = "file";
+  input.accept = "application/json";
+  input.onchange = async () => {
+    const file = input.files?.[0];
+    if (!file) return;
+    const text = await file.text();
+    importAll(JSON.parse(text));
+  };
+  input.click();
+};
+
+const { exportAll, importAll } = useFixtureIO();
+</script>
diff --git a/playwright.config.ts b/playwright.config.ts
new file mode 100644
index 0000000..2ca18c9
--- /dev/null
+++ b/playwright.config.ts
@@ -0,0 +1,15 @@
+import { defineConfig } from '@playwright/test'
+
+export default defineConfig({
+  webServer: {
+    command: 'npm run dev',
+    port: 3000,
+    timeout: 60_000,
+    reuseExistingServer: true
+  },
+  use: {
+    baseURL: 'http://localhost:3000'
+  }
+})
+
+
diff --git a/plugins/piniaPersistedState.client.ts b/plugins/piniaPersistedState.client.ts
new file mode 100644
index 0000000..a7d6242
--- /dev/null
+++ b/plugins/piniaPersistedState.client.ts
@@ -0,0 +1,7 @@
+import { defineNuxtPlugin } from "#app";
+import { createPersistedState } from "pinia-plugin-persistedstate";
+
+export default defineNuxtPlugin((nuxtApp) => {
+  // Register persisted state plugin for Pinia on client
+  nuxtApp.$pinia.use(createPersistedState());
+});
diff --git a/server/api/fixtures.get.ts b/server/api/fixtures.get.ts
new file mode 100644
index 0000000..a05d740
--- /dev/null
+++ b/server/api/fixtures.get.ts
@@ -0,0 +1,10 @@
+import { defineEventHandler } from 'h3'
+import { useFixtureIO } from '~/composables/useFixtureIO'
+
+export default defineEventHandler(() => {
+  // Export snapshot of in-memory state
+  const { exportAll } = useFixtureIO()
+  return exportAll()
+})
+
+
diff --git a/server/api/fixtures.post.ts b/server/api/fixtures.post.ts
new file mode 100644
index 0000000..0e1a7e7
--- /dev/null
+++ b/server/api/fixtures.post.ts
@@ -0,0 +1,11 @@
+import { defineEventHandler, readBody } from 'h3'
+import { useFixtureIO, type AppSnapshot } from '~/composables/useFixtureIO'
+
+export default defineEventHandler(async (event) => {
+  const body = (await readBody(event)) as AppSnapshot
+  const { importAll } = useFixtureIO()
+  importAll(body)
+  return { ok: true }
+})
+
+
diff --git a/stores/counter.ts b/stores/counter.ts
new file mode 100644
index 0000000..d6afa81
--- /dev/null
+++ b/stores/counter.ts
@@ -0,0 +1,18 @@
+import { defineStore } from "pinia";
+
+export const useCounterStore = defineStore("counter", {
+  state: () => ({
+    count: 0,
+  }),
+  getters: {
+    doubleCount: (state) => state.count * 2,
+  },
+  actions: {
+    increment() {
+      this.count += 1;
+    },
+  },
+  persist: {
+    paths: ["count"],
+  },
+});
diff --git a/tests/e2e/example.spec.ts b/tests/e2e/example.spec.ts
new file mode 100644
index 0000000..aa0a368
--- /dev/null
+++ b/tests/e2e/example.spec.ts
@@ -0,0 +1,10 @@
+import { test, expect } from '@playwright/test'
+
+test('happy path: home loads and increments', async ({ page }) => {
+  await page.goto('/')
+  await expect(page.getByRole('heading', { name: 'Welcome' })).toBeVisible()
+  await page.getByRole('button', { name: /Increment/ }).click()
+  await expect(page.getByText(/Count: 1/)).toBeVisible()
+})
+
+
diff --git a/tests/example.spec.ts b/tests/example.spec.ts
new file mode 100644
index 0000000..deefac5
--- /dev/null
+++ b/tests/example.spec.ts
@@ -0,0 +1,9 @@
+import { describe, it, expect } from 'vitest'
+
+describe('math', () => {
+  it('adds', () => {
+    expect(1 + 1).toBe(2)
+  })
+})
+
+
diff --git a/vitest.config.ts b/vitest.config.ts
new file mode 100644
index 0000000..74d19c6
--- /dev/null
+++ b/vitest.config.ts
@@ -0,0 +1,12 @@
+import { defineConfig } from 'vitest/config'
+import vue from '@vitejs/plugin-vue'
+
+export default defineConfig({
+  plugins: [vue()],
+  test: {
+    globals: true,
+    environment: 'jsdom'
+  }
+})
+
+