feat(ui): export Appearance type from root entry

Author: jacekradko

.changeset/export-appearance-from-ui.md

@@ -0,0 +1,6 @@
+---
+'@clerk/ui': patch
+'@clerk/upgrade': patch
+---
+
+Export `Appearance` type from `@clerk/ui` root entry

packages/ui/src/index.ts

@@ -2,6 +2,8 @@ import type { Ui } from './internal';
 import { UI_BRAND } from './internal';
 import type { Appearance } from './internal/appearance';
 
+export type { Appearance } from './internal/appearance';
+
 import { ClerkUI } from './ClerkUI';
 
 declare const PACKAGE_VERSION: string;

packages/upgrade/src/versions/core-3/changes/clerk-types-deprecation.md

@@ -15,3 +15,10 @@ Update your imports:
 ```
 
 The `@clerk/types` package will continue to re-export types from `@clerk/shared/types` for backward compatibility, but new types will only be added to `@clerk/shared/types`.
+
+**Note:** The `Appearance` type should be imported from `@clerk/ui` instead of `@clerk/shared/types`:
+
+```diff
+- import type { Appearance } from '@clerk/types';
++ import type { Appearance } from '@clerk/ui';
+```