Ivan FB ceccc7bef3
feat(codegen): Go per-event typed native event handlers
Adds the ergonomic native event surface for Go: `node.On<Event>(func(<Payload>))`
registers a native listener for that event and the library delivers the typed
`<Payload>` POD, which an exported Go callback reads into a Go struct (reusing
the generated `fromC`) and hands to the user's handler — no CBOR parsing. Sits
beside the existing CBOR `SetEventHandler` (wildcard / inter-process).

The example registers `OnEchoFired` and receives a typed `EchoEvent` when Echo
fires it. Verified end-to-end with `go run -race`.

C/C++/Rust get the same per-event typed handler + router next.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-31 18:37:27 +02:00
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