For a module that requires finding-events and is bound, the membership lists the stream its binding names, the subject
mesh.bus.<module>.finding-events.{event}.<node> and the finding events, so the tool runner carrying a stdio module (the
enrolment) says an emitted finding event there; the test holds the enrolment's membership.
Builds: design 47 G A-280, A-274, §529
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
jschoubben
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