docs: add mobile/Expo frontend, drop Tailwind/TanStack mention

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -1,12 +1,16 @@
 # create-glstack
 
-Scaffold a fullstack application with a Go backend, PostgreSQL database, and your choice of frontend framework, connected via Connect RPC.
+Scaffold a fullstack application with a Go backend, PostgreSQL database, and your choice of web and mobile frontends, connected via Connect RPC.
 
-Supported frontends:
+Supported web frontends:
 
 - [SvelteKit](https://kit.svelte.dev/)
 - [Solid Start](https://start.solidjs.com/)
 
+Supported mobile frontends:
+
+- [React Native + Expo](https://expo.dev/)
+
 ## Usage
 
 ```sh
@@ -18,7 +22,8 @@ bun create glstack
 A monorepo with the following structure:
 
 - **`services/api`** -- Go backend using [Cobra](https://github.com/spf13/cobra) for CLI, [pgx](https://github.com/jackc/pgx) for Postgres, and [Connect RPC](https://connectrpc.com/) for the API layer
-- **`apps/web`** -- Frontend app (SvelteKit or Solid Start) with TailwindCSS and [TanStack Query](https://tanstack.com/query)
+- **`apps/web`** -- Web frontend app (SvelteKit or Solid Start)
+- **`apps/mobile`** -- Optional [React Native + Expo](https://expo.dev/) mobile app sharing the same RPC client
 - **`packages/proto`** -- Protobuf service definitions with [Buf](https://buf.build/) for codegen (Go + TypeScript)
 - **`packages/rpc`** -- Generated TypeScript Connect RPC client shared across frontend apps