add vue lynx mobile wallet

apps/mobile/AGENTS.md

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+# AGENTS.md
+
+You are an expert in JavaScript, Rspeedy, and Vue Lynx application development. You write maintainable, performant, and accessible code.
+
+## Read in Advance
+
+- Vue Lynx: [llms.txt](https://vue.lynxjs.org/llms.txt), **REQUIRED**.
+  While dealing with a Vue Lynx task, an agent **MUST** read this doc because it is an entry point of all available docs about Vue Lynx.
+
+## Commands
+
+- `npm run dev` - Start the dev server
+
+- `npm run build` - Build the app for production
+
+- `npm run preview` - Preview the production build locally
+
+- `npm exec rspeedy inspect` - Inspect the Rspeedy config and Rspack config of the project.
+
+## Related Docs
+
+- Rsbuild: <https://rsbuild.rs/llms.txt>
+
+- Rspack: <https://rspack.rs/llms.txt>