Module codec 

JSON ↔ Rust codec and semantic event decomposition.

This module sits between the transport layer (raw WebSocket frames) and the session layer (typed events). It provides three operations:

• encode — serialise a ClientMessage to a JSON string for sending.
• decode — parse a JSON string from the wire into a ServerMessage.
• into_events — decompose one ServerMessage into a Vec<ServerEvent>.

The split between decode and into_events allows the session layer to inspect raw fields (e.g. session_resumption_update) before broadcasting the higher-level events to the application.

Functions

decode

Parse a JSON string from the wire into a ServerMessage.

encode

Serialise a ClientMessage to its JSON wire representation.

into_events

Decompose a single ServerMessage into a sequence of semantic ServerEvents.