Module protocol 

Protocol-specific PhaseDriver implementations.

Each protocol mode gets its own module:

• AG-UI client driver (agui) — TJ-SPEC-016
• A2A server driver (a2a_server) — TJ-SPEC-017
• A2A client driver (a2a_client) — TJ-SPEC-017
• MCP client driver (mcp_client) — TJ-SPEC-018

The MCP server driver lives in engine::mcp_server (TJ-SPEC-013 §8.2).

Modules

a2a_client

A2A client-mode PhaseDriver implementation.

a2a_server

A2A server-mode PhaseDriver implementation.

agui

AG-UI client-mode PhaseDriver implementation.

context_agui

Context-mode AG-UI PhaseDriver.

mcp_client

MCP client-mode PhaseDriver implementation.