frontend-app-api: split prepare and create app wiring

Move the phased specialized app lifecycle into prepareSpecializedApp.tsx and leave createSpecializedApp.tsx as the deprecated wrapper so the public entry points and their related types live alongside their own implementations.

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor

packages/frontend-app-api/src/wiring/index.ts

@@ -21,6 +21,8 @@ export {
   type PrepareSpecializedAppOptions,
   type PreparedSpecializedApp,
   type SpecializedAppSessionState,
+} from './prepareSpecializedApp';
+export {
   createSpecializedApp,
   type CreateSpecializedAppOptions,
 } from './createSpecializedApp';