fix(insights): leave mood out of the trends row when its module is off

The tab strip already hides the Mood pill when the mood module is off, but
the trends row still charted mood, both from a briefing finding and in its
blood pressure / weight / mood fallback. selectTrendCharts now takes the
metrics to leave out, and the overview passes mood when the module is off.

Refs #975

src/app/insights/page-client.tsx

@@ -74,6 +74,9 @@ function BlockSkeleton({
   );
 }
 
+/** Stable reference so the trends row does not re-select on every render. */
+const HIDDEN_MOOD = ["mood"] as const;
+
 const DailyBriefing = dynamic(
   () =>
     import("@/components/insights/daily-briefing").then((mod) => ({
@@ -513,6 +516,9 @@ export default function InsightsPageClient() {
     trends: (
       <TrendsRow
         briefing={briefingPayload}
+        // Same module gate the tab strip applies to the Mood pill: with
+        // the mood module off, the trends row does not chart mood either.
+        hiddenMetrics={user?.modules?.mood === false ? HIDDEN_MOOD : undefined}
         annotations={advisor.payload?.trendAnnotations ?? null}
         loading={advisor.isLoading || advisor.isRegenerating}
       />