Inspector events

Inspector traffic is JSON. TypeScript exports a discriminated union InspectorWireEvent covering the common shapes.

Event kinds (non-exhaustive)

`event` / discriminator	Purpose
`BOOTSTRAP`	Initial catalog + tree (Bootstrap).
`RETURN_RESOLVED`	A `Return(label, value)` path completed.
`ERROR_THROWN`	Labeled `Throw` or unexpected error.
`API_RESPONSE`	`ApiReturn` recorded HTTP response metadata.
`MIDDLEWARE_NEXT`	Express middleware called `next()` successfully.
`RPC_EXECUTED`	Invoke finished (ok/error summary without full body).
`JOB_PROGRESS`	Optional job lifecycle updates (Jobs).
`type: 'RPC_RESPONSE'`	Same payload as HTTP-style RPC result row.
`type: 'COVERAGE_REPORT'`	Coverage scan output when requested.

Socket.IO wraps many of these on the inspector:broadcast channel (INSPECTOR_BROADCAST_EVENT export on the socket-io subpath).