Create a Client Tool

Scaffold a new AtlasTool named $ARGUMENTS and wire it into the app.

Background

Client tools let the Atlas Agent invoke logic that runs in the browser — rendering charts, querying local state, showing UI panels, triggering navigation, etc. The agent decides when to call the tool; the app executes it and returns a result.

The flow is:

1. Agent responds with a clientTool action
2. The library validates the arguments against the TypeBox schema
3. execute() runs in the browser and returns { output, details }
4. output (string) is sent back to the agent as the tool result
5. details (any shape) is available on message.toolCalls for the UI to render