Module handler 

Handler registration seam — the boundary between generated adapters and game-owned domain logic.

Galeon generates adapter glue. The game project implements handlers. Both local and remote adapters target the same HandlerRegistry.

Architecture

Protocol definitions (game crate)
        │
        ▼
┌─────────────────┐
│ HandlerRegistry │ ← game registers handlers here
└────────┬────────┘
         │
    ┌────┴────┐
    ▼         ▼
  Local    Remote
 Adapter   Adapter

Design Rules

• One command type → one handler entry
• One query type → one handler entry
• Game project owns all handlers; Galeon does not generate domain logic
• Local and remote adapters target the same boundary

Structs

HandlerRegistry

Registry of command and query handlers.

Traits

CommandHandler

Handler for a command type. Game project implements this.

QueryHandler

Handler for a query type. Game project implements this.