The node's runtime is the Go binary: one static executable the host runs as ./node-tools from its own
bundle. Node.js stays on the machine for the TypeScript bundles the runtime launches. The TypeScript
source stays in the repository: it is the runtime image the per-module containers run until WP4c.
The runtime knows no language, so nothing ties it to Node.js. This ports its serve mode — the
pinned bus connection and patient connect, following memberships, launching every served bundle
over MCP on stdio with its own environment, a child's emit published as its module, each tool,
the tools verb and seat verbs served where the mesh issued them, and the console on loopback —
to one static binary. Same subjects, request and reply bodies, event headers and MCP answers.
The TypeScript stays: it is still the runtime inside the per-module containers until WP4c.
Tests run against a real bus and share the TypeScript fixtures.