One suite per gate: the rich reads omit with an honest module_disabled
reason, the correlations reader omits and touches no channel, the
doctor-visit resource and prompt refuse without assembling the record,
and the clinician share collapses to its documents-only state. Each
asserts the operator availability path alongside the user toggle, and
that the gate short-circuits before the engine runs rather than building
the answer and withholding it.
The structural test pins that every metric the rich reads can resolve has
either an owning module or a written review decision, and is explicit in
its own comment about what it cannot prove — it does not show that any
read calls the gate. Writing it surfaced an unowned HRV_RMSSD, the
fallback type an RMSSD-only account resolves to, which would have served
recovery data the primary type refuses.
The MCP surface reached three data families that deliberately bypass the
Coach snapshot and so inherited none of its module narrowing: the
doctor-report aggregate behind healthlog://report/doctor-visit and the
doctor_visit_summary prompt, the rollup-backed rich reads (compare_metric,
get_metric_baseline, detect_changepoints), and the correlations reader.
A disabled module — or one an operator switched off server-wide — still
egressed to a third-party assistant.
Gate at the read rather than per call site. The module-to-data ownership
table moves out of the Coach snapshot builder into
lib/modules/measurement-scope so every read gates off one map; the rich
reads resolve metrics through a module-aware resolver; the correlations
reader gates on insights itself, which also closes the same gap on the
Coach chat tool and the metric-page read strip.
Per-domain reads omit with an honest module_disabled reason; the
whole-record aggregate refuses, mirroring /api/export/health-record.
collectDoctorReportData gains a fail-closed backstop on its own module
key. The clinician share link, found while tracing the aggregate's
callers, had the same gap and now collapses to its documents-only state.
Marc-André Bombeck