diff --git a/web/e2e/auth-entry.spec.ts b/web/e2e/auth-entry.spec.ts
index 9793b03a..8070d443 100644
--- a/web/e2e/auth-entry.spec.ts
+++ b/web/e2e/auth-entry.spec.ts
@@ -1,3 +1,4 @@
+import { randomBytes } from 'node:crypto'
 import { expect, test } from '@playwright/test'
 import { setEnglishLocale } from './helpers/auth-fixtures'
 
@@ -17,6 +18,15 @@ test.describe('Auth Entry', () => {
 
     await page.getByRole('link', { name: 'Sign up now' }).click()
     await expect(page).toHaveURL('/register?returnTo=%2Fdashboard%2Ftokens')
+
+    await page.getByLabel('Email').fill('test@example.com')
+    await page.getByRole('button', { name: 'Register & Login' }).click()
+    await expect(page.getByText('Username is required')).toBeVisible()
+    await expect(page.getByText('Password is required')).toBeVisible()
+
+    await page.getByLabel('Email').fill('')
+    await page.getByLabel('Email').blur()
+    await expect(page.getByText('Email is required')).toBeVisible()
   })
 
   test('shows configured OAuth methods without exposing unsupported organization discovery', async ({ page }) => {
@@ -82,5 +92,45 @@ test.describe('Auth Entry', () => {
 
     await expect(page.getByRole('button', { name: 'Log in with work account' })).toBeVisible()
     await expect(page.getByLabel('Password', { exact: true })).toBeHidden()
+
+    await page.getByRole('button', { name: 'Personal login' }).click()
+    await expect(page.getByLabel('Password', { exact: true })).toBeVisible()
+  })
+
+  test('logs in to an explicit local destination on the isolated runtime', async ({ browser, page }) => {
+    test.skip(process.env.SKILLHUB_RUNTIME_E2E !== '1', 'Requires an isolated runtime with local registration enabled')
+    test.setTimeout(90_000)
+
+    const suffix = randomBytes(6).toString('hex')
+    const username = `pr901_${suffix}`
+    const password = `${randomBytes(18).toString('base64url')}Aa1!`
+
+    await page.goto('/register')
+    await page.getByLabel('Username').fill(username)
+    await page.getByLabel('Email').fill(`${username}@example.com`)
+    await page.getByLabel('Password').fill(password)
+    await page.getByRole('button', { name: 'Register & Login' }).click()
+    await expect(page).toHaveURL('/')
+
+    const loginPage = await browser.newPage()
+    await setEnglishLocale(loginPage)
+    await loginPage.goto('/login?returnTo=%2Fdashboard%2Ftokens')
+    await expect.poll(() => loginPage.evaluate(async () => (await fetch('/api/v1/auth/me')).status)).toBe(401)
+
+    await loginPage.getByLabel('Username').fill(username)
+    await loginPage.getByLabel('Password').fill(password)
+    await loginPage.getByRole('button', { name: 'Login' }).click()
+    await expect(loginPage).toHaveURL('/dashboard/tokens')
+    await expect.poll(() => loginPage.evaluate(async () => (await fetch('/api/v1/auth/me')).status)).toBe(200)
+    await loginPage.close()
+
+    const defaultLoginPage = await browser.newPage()
+    await setEnglishLocale(defaultLoginPage)
+    await defaultLoginPage.goto('/login')
+    await defaultLoginPage.getByLabel('Username').fill(username)
+    await defaultLoginPage.getByLabel('Password').fill(password)
+    await defaultLoginPage.getByRole('button', { name: 'Login' }).click()
+    await expect(defaultLoginPage).toHaveURL('/')
+    await defaultLoginPage.close()
   })
 })