fix(insights): wire grip / pain / waist / waist-to-height across web and MCP

Grip strength, pain (0–10 NRS), waist circumference, and waist-to-height
existed in the measurement enum, signal registry, and FHIR export but had
no web entry, no detail page, single non-sex-aware bands, and a split-brain
MCP exposure. This closes those gaps.

Web capture: the four signals join the manual measurement form, so a
web-only self-hoster can log them (the iOS client and the measurements API
already could).

Detail pages: flip detailPage on for the four signals and mount each on the
shared HealthKit metric template (chart, stat strip, Coach-read strip,
assessment card) via routed sub-pages and tab-strip pills, the same detail
spine every other metric carries.

Sex-aware bands: grip strength (EWGSOP2 men 27 / women 16 kg) and waist
(WHO men 94 / women 80 cm) now classify by the profile sex through the
age/sex norm resolver the assessment already threads; the resolver also
returns a sex-specific, age-independent band when no date of birth is set.
Fix the waist-to-height boundary so the NICE >= 0.5 rule is correct (the
last in-range value is 0.49).

MCP single source of truth: decouple the registry mcp facet from the Coach
snapshot — a signal can be MCP-readable without being on the Coach surface.
Mark the four physical signals mcp:true, derive the MCP rich-reads clinical
set from the registry flag instead of a duplicate allowlist, and relax the
invariant to coachSnapshot implies mcp (not the reverse). PHQ-9 / GAD-7 and
the environmental signals stay mcp:false and unreachable. compare_metric and
detect_changepoints now advertise clinical-signal support to match
get_metric_baseline.

src/app/api/insights/layout/route.ts

@@ -87,7 +87,11 @@ const layoutSchema = z.object({
       }),
     )
     .min(1)
-    .max(50)
+    // Cap at the accepted-id universe (canonical slugs + legacy aliases) so a
+    // single PUT can cover every tile the layout knows about — the cap grows
+    // automatically as new sub-page slugs land, rather than tripping a 422
+    // once the slug count crosses a hard-coded ceiling.
+    .max(ACCEPTED_INSIGHTS_TILE_IDS.length)
     .optional(),
 });
 

src/app/insights/grip-strength/page.tsx

@@ -0,0 +1,34 @@
+"use client";
+
+import { Dumbbell } from "lucide-react";
+
+import { HealthKitMetricPage } from "@/components/insights/healthkit-metric-page";
+import { useTranslations } from "@/lib/i18n/context";
+
+/**
+ * v1.25 — `/insights/grip-strength`.
+ *
+ * Grip-strength sub-page. Rides the generic HealthKit metric template so the
+ * signal gets the same detail spine as every other metric (chart, stat strip,
+ * Coach-read strip, assessment card). The assessment threads the sex-aware
+ * EWGSOP2 cut-off (men 27 / women 16 kg) via the `norms.ts` table.
+ */
+export default function InsightsGripStrengthPage() {
+  const { t } = useTranslations();
+  return (
+    <HealthKitMetricPage
+      measurementType="GRIP_STRENGTH"
+      statusMetric="GRIP_STRENGTH"
+      insightMetric="GRIP_STRENGTH"
+      chartKey="gripStrength"
+      i18nPrefix="insights.gripStrength"
+      color="#22c55e"
+      unit="kg"
+      yAxisUnit="kg"
+      statIcon={Dumbbell}
+      emptyStateIcon={<Dumbbell className="size-6" />}
+      emptyStateCtaType="GRIP_STRENGTH"
+      coachPrefill={t("insights.gripStrength.coachPrefill")}
+    />
+  );
+}

src/app/insights/pain/page.tsx

@@ -0,0 +1,33 @@
+"use client";
+
+import { Activity } from "lucide-react";
+
+import { HealthKitMetricPage } from "@/components/insights/healthkit-metric-page";
+import { useTranslations } from "@/lib/i18n/context";
+
+/**
+ * v1.25 — `/insights/pain`.
+ *
+ * Pain (0–10 NRS) sub-page. Patient-reported pain intensity on the validated
+ * numeric rating scale; rides the generic metric template for its detail
+ * spine + assessment (no-pain / mild band at 0–3).
+ */
+export default function InsightsPainPage() {
+  const { t } = useTranslations();
+  return (
+    <HealthKitMetricPage
+      measurementType="PAIN_NRS"
+      statusMetric="PAIN_NRS"
+      insightMetric="PAIN_NRS"
+      chartKey="painNrs"
+      i18nPrefix="insights.pain"
+      color="#f97316"
+      unit=""
+      yAxisUnit="/10"
+      statIcon={Activity}
+      emptyStateIcon={<Activity className="size-6" />}
+      emptyStateCtaType="PAIN_NRS"
+      coachPrefill={t("insights.pain.coachPrefill")}
+    />
+  );
+}

src/app/insights/waist-to-height/page.tsx

@@ -0,0 +1,32 @@
+"use client";
+
+import { Scaling } from "lucide-react";
+
+import { HealthKitMetricPage } from "@/components/insights/healthkit-metric-page";
+import { useTranslations } from "@/lib/i18n/context";
+
+/**
+ * v1.25 — `/insights/waist-to-height`.
+ *
+ * Waist-to-height ratio sub-page. The ancestry-robust single number (NICE:
+ * keep waist under half your height — WHtR ≥ 0.5 flags increased risk). Rides
+ * the generic metric template for its detail spine + assessment.
+ */
+export default function InsightsWaistToHeightPage() {
+  const { t } = useTranslations();
+  return (
+    <HealthKitMetricPage
+      measurementType="WAIST_TO_HEIGHT"
+      statusMetric="WAIST_TO_HEIGHT"
+      insightMetric="WAIST_TO_HEIGHT"
+      chartKey="waistToHeight"
+      i18nPrefix="insights.waistToHeight"
+      color="#8b5cf6"
+      unit=""
+      statIcon={Scaling}
+      emptyStateIcon={<Scaling className="size-6" />}
+      emptyStateCtaType="WAIST_TO_HEIGHT"
+      coachPrefill={t("insights.waistToHeight.coachPrefill")}
+    />
+  );
+}

src/app/insights/waist/page.tsx

@@ -0,0 +1,33 @@
+"use client";
+
+import { Ruler } from "lucide-react";
+
+import { HealthKitMetricPage } from "@/components/insights/healthkit-metric-page";
+import { useTranslations } from "@/lib/i18n/context";
+
+/**
+ * v1.25 — `/insights/waist`.
+ *
+ * Waist-circumference sub-page. Rides the generic metric template; the
+ * assessment threads the sex-aware WHO cut-off (men 94 / women 80 cm) via the
+ * `norms.ts` table.
+ */
+export default function InsightsWaistPage() {
+  const { t } = useTranslations();
+  return (
+    <HealthKitMetricPage
+      measurementType="WAIST_CIRCUMFERENCE"
+      statusMetric="WAIST_CIRCUMFERENCE"
+      insightMetric="WAIST_CIRCUMFERENCE"
+      chartKey="waistCircumference"
+      i18nPrefix="insights.waist"
+      color="#0ea5e9"
+      unit="cm"
+      yAxisUnit="cm"
+      statIcon={Ruler}
+      emptyStateIcon={<Ruler className="size-6" />}
+      emptyStateCtaType="WAIST_CIRCUMFERENCE"
+      coachPrefill={t("insights.waist.coachPrefill")}
+    />
+  );
+}