"plex did not take radarr.download.completed: Unexpected end of JSON input" read as the runtime failing to parse the bundle's answer. It was plex's own handler error, relayed. A bundle's error answer is now a launch.Refused, and the line says the handler answered an error, quotes it, names the event id and the delay before the next offer; the runtime's own failures (no answer in time, bundle exited) are said as before. The rule, unchanged and now tested: any mesh/event answer that is not an error takes the event, whatever its result says, including none.
node-tools
The node's tool runtime as a module (novox/hq ADR 0175, to-be 38 WP3). Assigned to a machine, it is one process the host runs from this bundle, as the operator's account: it serves every assigned module's tools and every held seat's verbs on the bus, and answers MCP on the machine's loopback — the console (design 34). The controller composes the process (which bundles to load, where the credential is, whose machine it is); this manifest says only what the machine must have for it: the interpreter, a place for the credential, the loopback port, and leave to call every tool.
The code is the mesh-tools package in this directory; the module at the repository root,
mesh-tools, builds the images TypeScript bundles are compiled in. See the repository README.