session Directory Reference

Files
	arena.cpp
	Unified double-ended server arena (Phase 1 core). See arena.h for the model.
	arena.h
	Unified double-ended server arena (Phase 1: core allocator, one region).
	proto_builtins.cpp
	Layer 5 (Session) - the built-in protocol registry (policy, not mechanism).
	proto_handler.h
	Layer 5 (Session) - per-protocol connection handler dispatch table.
	scratch.cpp
	Per-worker per-dispatch scratch arenas - implementation.
	scratch.h
	Shared per-dispatch scratch arena (Layer 5, session-scoped memory).
	session.cpp
	Layer 5 (Session) - event queue processor implementation.
	session.h
	Layer 5 (Session) - event queue dispatcher and session lifecycle.
	worker.cpp
	Server worker identity - implementation.
	worker.h
	Layer 5 (Session) - server worker identity.