mcp-type-definitions-client-calltool-method-returns-content-typed-as-un-aaa3543e

THEN Update the return type of Client.callTool() to match the actual response from request(). The content field should be typed as an array of content block objects (e.g., `{ content: CallToolResultContent[] }`). This ensures proper type checking when accessing content properties.

// Before: content is unknown
const result = await client.callTool({ name: 'example' });
// After: use correct type
import { CallToolResult } from '@modelcontextprotocol/sdk/types.js';
const result: CallToolResult = await client.callTool({ name: 'example' });