add

Author: mashharuki

README.md

@@ -6,10 +6,14 @@
 
 Sui Overflow2025 is a comprehensive blockchain application that demonstrates the integration of x402 payment protocol with Walrus storage through Model Context Protocol (MCP). The project features a multi-package monorepo structure with frontend, backend, MCP server, and AWS CDK infrastructure components.
 
-## Architecture
+## Architecture (AWS)
 
 ![](./docs/overview.png)
 
+## Architecture (local)
+
+![](./docs/overview2.png)
+
 ## Project Structure
 
 ```