Web-AI-SDK Playground for browser-native AI agents

The Playground is a browser-based workbench for building and inspecting multi-turn agents with Web Build-in AI APIs and WebMCP.

The goal is to show how web-ai-sdk's primitives behave when composed into a browser agent.

Note: On-device APIs currently require a compatible setup. Today, that means Chrome/Edge on desktop. The Playground is open source and maintained in the web-ai-sdk repository.