style(whats-new): reformat WhatsNewModal via pnpm format

DemoPanel is dev-only tooling like the rest of the UI Lab mock code, so it
lives with it now instead of among the real UI components. Import path in
App.tsx updated; the DEV gating (and production tree-shaking) is unchanged.

docs/ui-lab.md

@@ -22,7 +22,7 @@ http://127.0.0.1:1422
 The script runs Vite in the custom `ui` mode:
 
 ```bash
-vite --mode ui --host 127.0.0.1 --port 1422 --strictPort --open
+vite --mode ui --host 127.0.0.1 --port 1422 --strictPort
 ```
 
 The normal app development commands are unchanged:

package.json

@@ -13,7 +13,7 @@
     "clean:app": "cd src-tauri && cargo clean",
     "dev:app": "tauri dev",
     "dev:app:cpu": "tauri dev -- --no-default-features",
-    "dev:ui": "vite --mode ui --host 127.0.0.1 --port 1422 --strictPort --open",
+    "dev:ui": "vite --mode ui --host 127.0.0.1 --port 1422 --strictPort",
     "dev:vite": "vite",
     "dev:web": "cd website && pnpm dev",
     "format": "prettier --write .",
@@ -22,7 +22,8 @@
     "format:rust": "cd src-tauri && cargo fmt",
     "format:rust:check": "cd src-tauri && cargo fmt --check",
     "preview": "vite preview",
-    "tauri": "tauri"
+    "tauri": "tauri",
+    "test:e2e": "playwright test"
   },
   "dependencies": {
     "@tanstack/react-virtual": "^3.13.23",

playwright.config.ts

@@ -20,13 +20,13 @@ export default defineConfig({
   /* Retry on CI only */
   retries: process.env.CI ? 2 : 0,
   /* Opt out of parallel tests on CI. */
-  workers: process.env.CI ? 1 : undefined,
+  workers: process.env.CI ? 1 : 4,
   /* Reporter to use. See https://playwright.dev/docs/test-reporters */
   reporter: 'html',
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
   use: {
     /* Base URL to use in actions like `await page.goto('')`. */
-    // baseURL: 'http://localhost:3000',
+    baseURL: 'http://127.0.0.1:1422',
 
     /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
     trace: 'on-first-retry',
@@ -39,11 +39,6 @@ export default defineConfig({
       use: { ...devices['Desktop Chrome'] },
     },
 
-    {
-      name: 'firefox',
-      use: { ...devices['Desktop Firefox'] },
-    },
-
     {
       name: 'webkit',
       use: { ...devices['Desktop Safari'] },
@@ -70,10 +65,11 @@ export default defineConfig({
     // },
   ],
 
-  /* Run your local dev server before starting the tests */
-  // webServer: {
-  //   command: 'npm run start',
-  //   url: 'http://localhost:3000',
-  //   reuseExistingServer: !process.env.CI,
-  // },
+  /* Run the Phokus UI Lab (browser-only dev mode, see docs/ui-lab.md) before starting the tests */
+  webServer: {
+    command: 'pnpm exec vite --mode ui --host 127.0.0.1 --port 1422 --strictPort',
+    url: 'http://127.0.0.1:1422',
+    reuseExistingServer: !process.env.CI,
+    timeout: 120_000,
+  },
 })

src/App.tsx

@@ -15,7 +15,7 @@ import { UpdateToast } from './components/UpdateToast'
 import { WhatsNewToast } from './components/WhatsNewToast'
 import { WhatsNewModal } from './components/WhatsNewModal'
 import { OnboardingOverlay } from './components/onboarding/OnboardingOverlay'
-import { DemoPanel } from './components/DemoPanel'
+import { DemoPanel } from './dev/DemoPanel'
 import { initializeNotifications } from './notifications'
 
 export default function App() {

src/components/WhatsNewModal.tsx

@@ -188,9 +188,7 @@ function RailSections({ sections }: { sections: ChangelogSection[] }) {
         })}
       </nav>
       <div className="min-h-0 flex-1 overflow-y-auto px-6 py-5">
-        <p
-          className={`mb-3 text-[11px] font-semibold tracking-[0.1em] uppercase ${style.label}`}
-        >
+        <p className={`mb-3 text-[11px] font-semibold tracking-[0.1em] uppercase ${style.label}`}>
           {section.title}
         </p>
         <ItemList items={section.items} dot={style.dot} />

tests/example.spec.ts

@@ -1,18 +0,0 @@
-import { test, expect } from '@playwright/test'
-
-test('has title', async ({ page }) => {
-  await page.goto('https://playwright.dev/')
-
-  // Expect a title "to contain" a substring.
-  await expect(page).toHaveTitle(/Playwright/)
-})
-
-test('get started link', async ({ page }) => {
-  await page.goto('https://playwright.dev/')
-
-  // Click the get started link.
-  await page.getByRole('link', { name: 'Get started' }).click()
-
-  // Expects page to have a heading with the name of Installation.
-  await expect(page.getByRole('heading', { name: 'Installation' })).toBeVisible()
-})

tests/ui-lab.spec.ts

@@ -0,0 +1,93 @@
+import { test, expect, type Page } from '@playwright/test'
+
+// Smoke tests against the Phokus UI Lab (docs/ui-lab.md) — a browser-only dev
+// mode that runs the real App.tsx/store/components against seeded, in-memory
+// mock fixtures selected via the `?scenario=` query param.
+
+const browserErrors = new WeakMap<Page, string[]>()
+
+test.beforeEach(async ({ page }) => {
+  const errors: string[] = []
+  browserErrors.set(page, errors)
+
+  page.on('console', (message) => {
+    if (message.type() === 'error') errors.push(message.text())
+  })
+  page.on('pageerror', (error) => errors.push(error.message))
+})
+
+test.afterEach(async ({ page }) => {
+  expect(browserErrors.get(page) ?? []).toEqual([])
+})
+
+test.describe('gallery scenarios', () => {
+  test('rich scenario renders the gallery grid with folders in the sidebar', async ({ page }) => {
+    await page.goto('/?scenario=rich')
+
+    await expect(page.getByText('Camera Roll', { exact: true })).toBeVisible()
+    await expect(page.getByText('Client Selects', { exact: true })).toBeVisible()
+    await expect(page.getByText('Video Archive', { exact: true })).toBeVisible()
+
+    await expect(page.getByRole('button', { name: /^Open / }).first()).toBeVisible()
+  })
+
+  test('filename search filters the visible gallery results', async ({ page }) => {
+    await page.goto('/?scenario=rich')
+
+    const search = page.getByPlaceholder('Search files, or use /s /t')
+    await search.fill('coastal-walk-003')
+
+    await expect(page.getByText('Filename')).toBeVisible()
+    await expect(page.getByRole('button', { name: 'Open coastal-walk-003.jpg' })).toBeVisible()
+    await expect(page.getByRole('button', { name: /^Open / })).toHaveCount(1)
+  })
+
+  test('empty scenario shows the empty library without the onboarding tour', async ({ page }) => {
+    await page.goto('/?scenario=empty')
+
+    await expect(page.getByText('No media found')).toBeVisible()
+    await expect(page.getByRole('heading', { name: 'Welcome' })).not.toBeVisible()
+  })
+
+  test('new-user scenario opens the onboarding tour on step 1', async ({ page }) => {
+    await page.goto('/?scenario=new-user')
+
+    await expect(page.getByRole('heading', { name: 'Welcome' })).toBeVisible()
+    await expect(page.getByText('Step 1 of 8')).toBeVisible()
+  })
+
+  test('duplicates fixture data shows cached groups in Duplicate Finder', async ({ page }) => {
+    await page.goto('/?scenario=duplicates')
+
+    await page.getByText('Duplicates', { exact: true }).click()
+
+    await expect(page.getByRole('heading', { name: 'Duplicate Finder' })).toBeVisible()
+    await expect(page.getByText(/\d+ groups? · .* reclaimable/)).toBeVisible()
+    await expect(page.getByRole('button', { name: 'Select all duplicates' })).toBeVisible()
+  })
+})
+
+test.describe("what's new", () => {
+  test('just-updated scenario shows the toast and opens the modal on click', async ({ page }) => {
+    await page.goto('/?scenario=just-updated')
+
+    const toastButton = page.getByRole('button', { name: "What's new" })
+    await expect(toastButton).toBeVisible()
+    await toastButton.click()
+
+    await expect(page.getByRole('heading', { name: /^Phokus v/ })).toBeVisible()
+  })
+
+  test('just-updated + unreleased changelog opens the modal with the section nav rail', async ({
+    page,
+  }) => {
+    await page.goto('/?scenario=just-updated&changelog=unreleased')
+
+    await page.getByRole('button', { name: "What's new" }).click()
+
+    await expect(page.getByRole('heading', { name: /^Phokus v/ })).toBeVisible()
+    const sectionRail = page.getByRole('navigation')
+    await expect(sectionRail.getByRole('button', { name: /Added/ })).toBeVisible()
+    await expect(sectionRail.getByRole('button', { name: /Changed/ })).toBeVisible()
+  })
+})