Sandbox proxy method`ui/notifications/sandbox-ready` or `ui/notifications/sandbox-proxy-ready`

[aharvard]

I found a small discrepancy between the spec and the examples.

Should the sandbox proxy method be ui/notifications/sandbox-ready or ui/notifications/sandbox-proxy-ready?

The draft spec states ui/notifications/sandbox-ready

#### Reserved Messages (Sandbox Proxy)

These messages are reserved for web-based hosts that implement the recommended double-iframe sandbox architecture:

`ui/notifications/sandbox-ready` (Sandbox Proxy → Host) - Sandbox proxy is ready

```typescript
{
  jsonrpc: "2.0",
  method: "ui/notifications/sandbox-ready",
  params: {}
}

... but the examples use ui/notifications/sandbox-proxy-ready

ext-apps/examples/basic-host/src/sandbox.ts

Lines 44 to 45 in 6f14cf3

	const PROXY_READY_NOTIFICATION: McpUiSandboxProxyReadyNotification["method"] =
	"ui/notifications/sandbox-proxy-ready";

[idosal]

Thanks @aharvard! Seems like misalignment in the example code (cc @ochafik)

[ochafik]

@aharvard Thanks for reporting! Addressing in #160 :-)