Subscribe(pattern, handler) asks the runtime for the module's events and answers each mesh/event
only after the matching handlers returned nil, so the runtime acknowledges it on the bus then and
not before; Ask(key, body) calls a tool as the module. Topic matching is the TypeScript SDK's.
What the TypeScript SDK's stdio loop does, in Go: an empty name serves as MESH_SERVED_MODULE; each
call runs beside the loop so a tool waiting on the runtime does not deadlock it; Emit asks the
runtime (mesh/publish) with the same envelope and headers. README says how to install it and how
releases are tagged.
The node's runtime launches a tools bundle as a process and speaks MCP over stdio to it, so a tool
may be written in any language and the transport stays in the runtime (ADR 0039's refusal, kept).
Each SDK is the loop and the tool type and nothing else: `@novox/mesh-sdk/stdio` (serveStdio, and
serveRegisteredOverStdio for a bundle that already registers the in-process way), python/, go/,
rust/ and c/ beside it, each with an example answering `greet` and the seat verb `node-lamp.on`.
Skeletons, by the operator's direction: the bare minimum one bundle per language needs to be built
and answer, proven here by each example answering tools/list and tools/call on stdio.
jochen