diff --git a/.github/workflows/deploy-cloudflare-admin-ui.yml b/.github/workflows/deploy-cloudflare-admin-ui.yml
index 6e39a1299..cc1bd49c2 100644
--- a/.github/workflows/deploy-cloudflare-admin-ui.yml
+++ b/.github/workflows/deploy-cloudflare-admin-ui.yml
@@ -21,7 +21,7 @@ jobs:
 
     environment:
       name: Admin Production
-      url: https://admin.airi.build/admin/
+      url: https://admin.airi.build/
 
     steps:
       - uses: actions/checkout@v6
diff --git a/.github/workflows/deploy-cloudflare-workers-dev-server.yml b/.github/workflows/deploy-cloudflare-workers-dev-server.yml
index 91f6d4137..c409a73f0 100644
--- a/.github/workflows/deploy-cloudflare-workers-dev-server.yml
+++ b/.github/workflows/deploy-cloudflare-workers-dev-server.yml
@@ -140,7 +140,7 @@ jobs:
 
     environment:
       name: AdminServerDev
-      url: https://server-dev.airi-server-admin.pages.dev/admin/
+      url: https://server-dev.airi-server-admin.pages.dev/
 
     steps:
       - uses: actions/checkout@v6
@@ -176,4 +176,4 @@ jobs:
 
       - name: Print preview URL
         run: |
-          echo "Preview URL: https://server-dev.airi-server-admin.pages.dev/admin/"
+          echo "Preview URL: https://server-dev.airi-server-admin.pages.dev/"
diff --git a/apps/server/README.md b/apps/server/README.md
index 203f8cb28..ff6466b4e 100644
--- a/apps/server/README.md
+++ b/apps/server/README.md
@@ -42,7 +42,7 @@ Set this when previewing or deploying auth UI to a different Cloudflare URL.
 
 Default:
 
-`ADMIN_UI_URL=https://admin.airi.build/admin`
+`ADMIN_UI_URL=https://admin.airi.build`
 
 Set this when previewing or deploying admin UI to a different Cloudflare URL.
 
diff --git a/apps/server/src/libs/env.ts b/apps/server/src/libs/env.ts
index 0656ba16b..c6578044a 100644
--- a/apps/server/src/libs/env.ts
+++ b/apps/server/src/libs/env.ts
@@ -88,7 +88,7 @@ const EnvSchema = object({
   // Standalone admin UI base URL. The server keeps `/admin/*` as the historical
   // entrypoint and redirects those requests here after ui-admin moved out of
   // the server image.
-  ADMIN_UI_URL: optional(string(), 'https://admin.airi.build/admin'),
+  ADMIN_UI_URL: optional(string(), 'https://admin.airi.build'),
 
   // Canonical user-facing web app origin. Used as the Stripe redirect base
   // (success_url / cancel_url / portal return_url) when a request has no trusted
diff --git a/apps/server/src/libs/tests/auth.test.ts b/apps/server/src/libs/tests/auth.test.ts
index 18693d4a2..5e1b0d392 100644
--- a/apps/server/src/libs/tests/auth.test.ts
+++ b/apps/server/src/libs/tests/auth.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it, vi } from 'vitest'
 
-import { ensureDynamicFirstPartyRedirectUri, seedTrustedClients } from '../auth'
+import { createAuth, ensureDynamicFirstPartyRedirectUri, seedTrustedClients } from '../auth'
 
 function createMockDb(existingRowsByCall: unknown[][] = []) {
   const limit = vi.fn()
@@ -29,6 +29,22 @@ function createMockDb(existingRowsByCall: unknown[][] = []) {
   return { db, limit, values, capturedValues }
 }
 
+describe('createAuth', () => {
+  it('allows signed-in users to link OAuth accounts that use a different email', () => {
+    const auth = createAuth({} as any, {
+      API_SERVER_URL: 'http://localhost:3000',
+      AUTH_GOOGLE_CLIENT_ID: 'google-client',
+      AUTH_GOOGLE_CLIENT_SECRET: 'google-secret',
+      AUTH_GITHUB_CLIENT_ID: 'github-client',
+      AUTH_GITHUB_CLIENT_SECRET: 'github-secret',
+      BETTER_AUTH_SECRET: 'test-secret-test-secret-test-secret',
+      ADDITIONAL_TRUSTED_ORIGINS: [],
+    } as any)
+
+    expect(auth.options.account?.accountLinking?.allowDifferentEmails).toBe(true)
+  })
+})
+
 describe('seedTrustedClients', () => {
   it('seeds trusted first-party clients with explicit oauth metadata', async () => {
     const { db, values, capturedValues } = createMockDb([[], [], []])
diff --git a/apps/server/src/libs/tests/env.test.ts b/apps/server/src/libs/tests/env.test.ts
index 8b0a8c687..14b8b2924 100644
--- a/apps/server/src/libs/tests/env.test.ts
+++ b/apps/server/src/libs/tests/env.test.ts
@@ -42,7 +42,7 @@ describe('parseEnv', () => {
     expect(env.DATABASE_URL).toBe('postgres://example')
     expect(env.REDIS_URL).toBe('redis://example')
     expect(env.AUTH_UI_URL).toBe('https://auth.airi.build/ui')
-    expect(env.ADMIN_UI_URL).toBe('https://admin.airi.build/admin')
+    expect(env.ADMIN_UI_URL).toBe('https://admin.airi.build')
     expect(env.ADDITIONAL_TRUSTED_ORIGINS).toEqual([])
   })
 
diff --git a/apps/server/src/routes/auth/oidc-userinfo-ban.test.ts b/apps/server/src/routes/auth/oidc-userinfo-ban.test.ts
index 74b3ec724..a326cec88 100644
--- a/apps/server/src/routes/auth/oidc-userinfo-ban.test.ts
+++ b/apps/server/src/routes/auth/oidc-userinfo-ban.test.ts
@@ -103,7 +103,7 @@ describe('auth UI routes', () => {
     expect(res.status).toBe(302)
 
     const location = res.headers.get('location')
-    expect(location).toBe('https://auth.airi.build/ui/sign-in?provider=github&client_id=stage-web&prompt=login&redirect_uri=http%3A%2F%2Flocalhost%3A5173%2Fauth%2Fcallback')
+    expect(location).toBe('https://auth.airi.build/ui/sign-in?provider=github&client_id=stage-web&prompt=login&redirect_uri=http%3A%2F%2Flocalhost%3A5173%2Fauth%2Fcallback&api_server_url=http%3A%2F%2Flocalhost%3A3000')
   })
 
   it('redirects Electron OIDC callback queries to the standalone auth UI relay', async () => {
diff --git a/apps/server/src/utils/server-admin-ui.ts b/apps/server/src/utils/server-admin-ui.ts
index 5239c3cd4..c027696e0 100644
--- a/apps/server/src/utils/server-admin-ui.ts
+++ b/apps/server/src/utils/server-admin-ui.ts
@@ -1,8 +1,8 @@
 export const SERVER_ADMIN_UI_BASE_PATH = '/admin'
 export const ADMIN_UI_API_SERVER_URL_QUERY_PARAM = 'api_server_url'
-export const DEFAULT_ADMIN_UI_URL = 'https://admin.airi.build/admin'
+export const DEFAULT_ADMIN_UI_URL = 'https://admin.airi.build'
 export const SERVER_DEV_API_SERVER_URL = 'https://airi-server-dev.up.railway.app'
-export const SERVER_DEV_ADMIN_UI_URL = 'https://server-dev.airi-server-admin.pages.dev/admin'
+export const SERVER_DEV_ADMIN_UI_URL = 'https://server-dev.airi-server-admin.pages.dev'
 
 /**
  * Builds an absolute URL inside the externally hosted admin UI.
@@ -13,7 +13,7 @@ export const SERVER_DEV_ADMIN_UI_URL = 'https://server-dev.airi-server-admin.pag
  * - Preserving dashboard route paths and query parameters.
  *
  * Expects:
- * - `adminUiUrl` is the public admin UI base, usually ending in `/admin`.
+ * - `adminUiUrl` is the public admin UI base.
  * - `path` is the route path within the admin UI router.
  *
  * Returns:
@@ -75,7 +75,7 @@ export function resolveAdminUiUrl(adminUiUrl: string, apiServerUrl: string): str
  *
  * Expects:
  * - `requestUrl` is the incoming server URL.
- * - `adminUiUrl` points to the standalone admin UI base path.
+ * - `adminUiUrl` points to the standalone admin UI base.
  *
  * Returns:
  * - The external admin UI URL preserving route suffix and query string.
diff --git a/apps/server/src/utils/tests/server-admin-ui.test.ts b/apps/server/src/utils/tests/server-admin-ui.test.ts
index 20a05a98f..965934524 100644
--- a/apps/server/src/utils/tests/server-admin-ui.test.ts
+++ b/apps/server/src/utils/tests/server-admin-ui.test.ts
@@ -4,42 +4,42 @@ import { buildAdminUiRedirectUrl, buildAdminUiUrl, resolveAdminUiUrl } from '../
 
 describe('admin UI URL helpers', () => {
   it('builds admin UI URLs under the configured admin base path', () => {
-    expect(buildAdminUiUrl('https://admin.airi.build/admin', '/users', '?query=alice')).toBe(
-      'https://admin.airi.build/admin/users?query=alice',
+    expect(buildAdminUiUrl('https://admin.airi.build', '/users', '?query=alice')).toBe(
+      'https://admin.airi.build/users?query=alice',
     )
   })
 
   it('maps server /admin requests to the standalone admin UI while preserving queries', () => {
     expect(buildAdminUiRedirectUrl(
-      'https://admin.airi.build/admin/',
+      'https://admin.airi.build/',
       'https://api.airi.build/admin/voice-packs?provider=openai',
-    )).toBe('https://admin.airi.build/admin/voice-packs?provider=openai')
+    )).toBe('https://admin.airi.build/voice-packs?provider=openai')
   })
 
   it('adds the API server origin for standalone admin UI cross-environment redirects', () => {
     expect(buildAdminUiRedirectUrl(
-      'https://admin-preview.example/admin/',
+      'https://admin-preview.example/',
       'https://airi-server-dev.up.railway.app/admin/users?api_server_url=https%3A%2F%2Fevil.example',
       'https://airi-server-dev.up.railway.app/api/admin',
     )).toBe(
-      'https://admin-preview.example/admin/users?api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app',
+      'https://admin-preview.example/users?api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app',
     )
   })
 
   it('routes server-dev default admin UI redirects to the matching Pages branch', () => {
     expect(buildAdminUiRedirectUrl(
-      'https://admin.airi.build/admin',
+      'https://admin.airi.build',
       'https://airi-server-dev.up.railway.app/admin/users?query=alice',
       'https://airi-server-dev.up.railway.app',
     )).toBe(
-      'https://server-dev.airi-server-admin.pages.dev/admin/users?query=alice&api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app',
+      'https://server-dev.airi-server-admin.pages.dev/users?query=alice&api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app',
     )
   })
 
   it('keeps an explicitly configured admin UI URL for server-dev', () => {
     expect(resolveAdminUiUrl(
-      'https://admin-preview.example/admin',
+      'https://admin-preview.example',
       'https://airi-server-dev.up.railway.app',
-    )).toBe('https://admin-preview.example/admin')
+    )).toBe('https://admin-preview.example')
   })
 })
diff --git a/apps/ui-admin/README.md b/apps/ui-admin/README.md
index 5cacdf5b6..cd7c93c43 100644
--- a/apps/ui-admin/README.md
+++ b/apps/ui-admin/README.md
@@ -1,6 +1,6 @@
 # AIRI Admin Dashboard
 
-Admin dashboard for operating the hosted AIRI server. It is a standalone Vue/Vite app deployed to Cloudflare Pages under `/admin`; the API server redirects its historical `/admin/*` entrypoints to this app.
+Admin dashboard for operating the hosted AIRI server. It is a standalone Vue/Vite app deployed to Cloudflare Pages; the API server redirects its historical `/admin/*` entrypoints to this app.
 
 ## Use When
 
diff --git a/apps/ui-admin/public/_redirects b/apps/ui-admin/public/_redirects
index 4af6262b7..7797f7c6a 100644
--- a/apps/ui-admin/public/_redirects
+++ b/apps/ui-admin/public/_redirects
@@ -1,3 +1 @@
-/ /admin/ 302
-/admin /index.html 200
-/admin/* /index.html 200
+/* /index.html 200
diff --git a/apps/ui-admin/src/main.ts b/apps/ui-admin/src/main.ts
index 01c8fb373..673b87ddf 100644
--- a/apps/ui-admin/src/main.ts
+++ b/apps/ui-admin/src/main.ts
@@ -20,7 +20,7 @@ import './styles/main.css'
 import 'uno.css'
 
 const router = createRouter({
-  history: createWebHistory('/admin/'),
+  history: createWebHistory('/'),
   routes: [
     { path: '/', component: OverviewPage },
     { path: '/users', component: UsersPage },
diff --git a/apps/ui-admin/src/modules/server-admin-context.test.ts b/apps/ui-admin/src/modules/server-admin-context.test.ts
index 6930065f4..46d7af1d6 100644
--- a/apps/ui-admin/src/modules/server-admin-context.test.ts
+++ b/apps/ui-admin/src/modules/server-admin-context.test.ts
@@ -7,16 +7,16 @@ import { getServerAdminBootstrapContext, resolveStandaloneServerAdminContext } f
 describe('ui-admin bootstrap context', () => {
   it('uses the trusted API server origin carried by standalone server redirects', () => {
     expect(resolveStandaloneServerAdminContext(
-      'https://admin.airi.build/admin/users?api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app%2Fapi%2Fadmin',
+      'https://admin.airi.build/users?api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app%2Fapi%2Fadmin',
     )).toEqual({
       apiServerUrl: 'https://airi-server-dev.up.railway.app',
-      currentUrl: 'https://admin.airi.build/admin/users?api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app%2Fapi%2Fadmin',
+      currentUrl: 'https://admin.airi.build/users?api_server_url=https%3A%2F%2Fairi-server-dev.up.railway.app%2Fapi%2Fadmin',
     })
   })
 
   it('ignores untrusted API server origins from crafted standalone admin URLs', () => {
     expect(resolveStandaloneServerAdminContext(
-      'https://admin.airi.build/admin/users?api_server_url=https%3A%2F%2Fevil.example',
+      'https://admin.airi.build/users?api_server_url=https%3A%2F%2Fevil.example',
     )).toBeNull()
   })
 
diff --git a/apps/ui-admin/vite.config.ts b/apps/ui-admin/vite.config.ts
index 0a141e704..413e2e75a 100644
--- a/apps/ui-admin/vite.config.ts
+++ b/apps/ui-admin/vite.config.ts
@@ -7,7 +7,6 @@ import VueMacros from 'vue-macros/vite'
 import { defineConfig } from 'vite'
 
 export default defineConfig({
-  base: '/',
   resolve: {
     alias: {
       '@proj-airi/stage-shared': resolve(join(import.meta.dirname, '..', '..', 'packages', 'stage-shared', 'src')),
diff --git a/apps/ui-server-auth/public/_redirects b/apps/ui-server-auth/public/_redirects
index 060b172e1..e0706e420 100644
--- a/apps/ui-server-auth/public/_redirects
+++ b/apps/ui-server-auth/public/_redirects
@@ -1,3 +1,4 @@
+/ /ui/profile 302
 /auth /ui/ 302
 /auth/* /ui/:splat 302
 /ui /index.html 200