Crate fret_diag_ws 

WebSocket transport for Fret diagnostics / devtools.

This crate provides optional client/server glue used by diagnostics tooling (e.g. fretboard) to exchange fret_diag_protocol messages over WebSockets.

Feature flags:

• client-native, client-wasm: WebSocket client implementations for native/wasm targets.
• server-native: a native WebSocket server for local devtools sessions.