MCP server wrapper for native tool integration

[amaar-mc]

Currently agents interact with Wit by shelling out to CLI commands. An MCP (Model Context Protocol) server would expose Wit's JSON-RPC API as native tools that AI agents can call directly.

What this enables:

• Agents get wit_declare, wit_lock, wit_status, wit_release as native tools
• Tool descriptions tell the agent when to use each tool automatically
• No need for CLAUDE.md instructions — the tool metadata drives behavior
• Works with any MCP-compatible client (Claude Code, Cursor, etc.)

Implementation:

• Thin wrapper that translates MCP tool calls to Wit's existing JSON-RPC API
• Each of the 12 RPC methods maps 1:1 to an MCP tool
• Server runs alongside the daemon or as a separate process

See docs/PROTOCOL.md and docs/openrpc.json for the full API spec.