fix(insights): say a steady usual value as one figure, not a range of equal ends

messages/de.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "Dein üblicher Bereich liegt bei {low}–{high} {unit}; heute liegt {value} darin.",
         "baselineAbove": "Dein üblicher Bereich liegt bei {low}–{high} {unit}; heute liegt {value} darüber.",
         "baselineBelow": "Dein üblicher Bereich liegt bei {low}–{high} {unit}; heute liegt {value} darunter.",
+        "steadyWithin": "Deine Werte liegen meist bei {low} {unit}; heute passt {value} dazu.",
+        "steadyAbove": "Deine Werte liegen meist bei {low} {unit}; heute liegt {value} darüber.",
+        "steadyBelow": "Deine Werte liegen meist bei {low} {unit}; heute liegt {value} darunter.",
         "insufficient": "Lerne noch deinen üblichen Bereich — protokolliere noch ein paar Tage weiter.",
         "driver": "{note}"
       },

messages/en.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "Your usual range is {low}–{high} {unit}; today's {value} sits within it.",
         "baselineAbove": "Your usual range is {low}–{high} {unit}; today's {value} sits above it.",
         "baselineBelow": "Your usual range is {low}–{high} {unit}; today's {value} sits below it.",
+        "steadyWithin": "Your readings usually sit at {low} {unit}; today's {value} matches.",
+        "steadyAbove": "Your readings usually sit at {low} {unit}; today's {value} is above that.",
+        "steadyBelow": "Your readings usually sit at {low} {unit}; today's {value} is below that.",
         "insufficient": "Still learning your usual range — keep logging for a few more days.",
         "driver": "{note}"
       },

messages/es.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "Tu rango habitual es {low}–{high} {unit}; hoy {value} se sitúa dentro de él.",
         "baselineAbove": "Tu rango habitual es {low}–{high} {unit}; hoy {value} se sitúa por encima.",
         "baselineBelow": "Tu rango habitual es {low}–{high} {unit}; hoy {value} se sitúa por debajo.",
+        "steadyWithin": "Tus valores suelen estar en {low} {unit}; hoy {value} coincide.",
+        "steadyAbove": "Tus valores suelen estar en {low} {unit}; hoy {value} está por encima.",
+        "steadyBelow": "Tus valores suelen estar en {low} {unit}; hoy {value} está por debajo.",
         "insufficient": "Todavía estoy aprendiendo tu rango habitual — sigue registrando unos días más.",
         "driver": "{note}"
       },

messages/fr.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "Ta plage habituelle est de {low}–{high} {unit} ; aujourd'hui, {value} s'y situe.",
         "baselineAbove": "Ta plage habituelle est de {low}–{high} {unit} ; aujourd'hui, {value} se situe au-dessus.",
         "baselineBelow": "Ta plage habituelle est de {low}–{high} {unit} ; aujourd'hui, {value} se situe en dessous.",
+        "steadyWithin": "Tes valeurs sont habituellement à {low} {unit} ; aujourd'hui, {value} correspond.",
+        "steadyAbove": "Tes valeurs sont habituellement à {low} {unit} ; aujourd'hui, {value} se situe au-dessus.",
+        "steadyBelow": "Tes valeurs sont habituellement à {low} {unit} ; aujourd'hui, {value} se situe en dessous.",
         "insufficient": "J'apprends encore ta plage habituelle — continue à enregistrer quelques jours de plus.",
         "driver": "{note}"
       },

messages/it.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "Il tuo intervallo abituale è {low}–{high} {unit}; oggi {value} rientra al suo interno.",
         "baselineAbove": "Il tuo intervallo abituale è {low}–{high} {unit}; oggi {value} si colloca al di sopra.",
         "baselineBelow": "Il tuo intervallo abituale è {low}–{high} {unit}; oggi {value} si colloca al di sotto.",
+        "steadyWithin": "I tuoi valori sono di solito {low} {unit}; oggi {value} corrisponde.",
+        "steadyAbove": "I tuoi valori sono di solito {low} {unit}; oggi {value} è al di sopra.",
+        "steadyBelow": "I tuoi valori sono di solito {low} {unit}; oggi {value} è al di sotto.",
         "insufficient": "Sto ancora imparando il tuo intervallo abituale — continua a registrare per qualche giorno in più.",
         "driver": "{note}"
       },

messages/ko.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "평소 범위: {low}–{high} {unit}. 오늘 값 {value} — 범위 안이에요.",
         "baselineAbove": "평소 범위: {low}–{high} {unit}. 오늘 값 {value} — 범위 위예요.",
         "baselineBelow": "평소 범위: {low}–{high} {unit}. 오늘 값 {value} — 범위 아래예요.",
+        "steadyWithin": "평소 값: {low} {unit}. 오늘 값 {value} — 평소와 같아요.",
+        "steadyAbove": "평소 값: {low} {unit}. 오늘 값 {value} — 평소보다 높아요.",
+        "steadyBelow": "평소 값: {low} {unit}. 오늘 값 {value} — 평소보다 낮아요.",
         "insufficient": "아직 평소 범위를 배우는 중이에요 — 며칠 더 기록해 주세요.",
         "driver": "{note}"
       },

messages/pl.json

@@ -3030,6 +3030,9 @@
         "baselineWithin": "Twój zwykły zakres to {low}–{high} {unit}; dzisiejsza wartość {value} mieści się w nim.",
         "baselineAbove": "Twój zwykły zakres to {low}–{high} {unit}; dzisiejsza wartość {value} jest powyżej niego.",
         "baselineBelow": "Twój zwykły zakres to {low}–{high} {unit}; dzisiejsza wartość {value} jest poniżej niego.",
+        "steadyWithin": "Twoje pomiary zwykle wynoszą {low} {unit}; dzisiejsza wartość {value} jest taka sama.",
+        "steadyAbove": "Twoje pomiary zwykle wynoszą {low} {unit}; dzisiejsza wartość {value} jest wyższa.",
+        "steadyBelow": "Twoje pomiary zwykle wynoszą {low} {unit}; dzisiejsza wartość {value} jest niższa.",
         "insufficient": "Wciąż poznaję twój zwykły zakres — rejestruj jeszcze przez kilka dni.",
         "driver": "{note}"
       },

src/components/insights/derived/__tests__/coach-read-strip-steady-band.test.tsx

@@ -0,0 +1,72 @@
+import { describe, it, expect, vi } from "vitest";
+import { renderToStaticMarkup } from "react-dom/server";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+
+import { I18nProvider } from "@/lib/i18n/context";
+import { queryKeys } from "@/lib/query-keys";
+import type { CoachReadStripData } from "@/lib/insights/derived/coach-read-shape";
+
+/**
+ * A band whose two ends format to the same figure is a steady value.
+ *
+ * With many identical daily readings the robust band collapses, and the strip
+ * read "Your usual range is 61–61 bpm". It now names the one value instead,
+ * and keeps the placement of today's reading.
+ */
+
+vi.mock("@/hooks/use-auth", () => ({
+  useAuth: () => ({
+    user: { timezone: "UTC", dateOfBirth: null, gender: null },
+    isAuthenticated: true,
+  }),
+}));
+
+vi.mock("@/hooks/use-mounted", () => ({ useMounted: () => true }));
+
+import { CoachReadStrip } from "../coach-read-strip";
+
+const METRIC = "RESTING_HEART_RATE";
+
+function render(data: CoachReadStripData): string {
+  const client = new QueryClient({
+    defaultOptions: { queries: { retry: false, staleTime: Infinity } },
+  });
+  client.setQueryData(queryKeys.insightsCoachRead(METRIC, "en"), data);
+  return renderToStaticMarkup(
+    <QueryClientProvider client={client}>
+      <I18nProvider initialLocale="en">
+        <CoachReadStrip metricType={METRIC} unit="bpm" />
+      </I18nProvider>
+    </QueryClientProvider>,
+  );
+}
+
+function band(
+  low: number,
+  high: number,
+  latest: number,
+  placement: "within" | "above" | "below",
+): CoachReadStripData {
+  return {
+    baseline: { low, high, latest, placement, sampleDays: 30 },
+    learning: false,
+    driver: null,
+  };
+}
+
+describe("CoachReadStrip — steady band", () => {
+  it("names one value when both ends format alike", () => {
+    const markup = render(band(61, 61.04, 61, "within"));
+    expect(markup).not.toContain("61–61");
+    expect(markup).toContain("usually sit at 61");
+  });
+
+  it("keeps the placement for a steady value", () => {
+    expect(render(band(61, 61, 66, "above"))).toContain("is above that");
+    expect(render(band(61, 61, 57, "below"))).toContain("is below that");
+  });
+
+  it("still shows a real range as a range", () => {
+    expect(render(band(58, 64, 61, "within"))).toContain("58–64");
+  });
+});

src/components/insights/derived/coach-read-strip.tsx

@@ -106,8 +106,16 @@ export function CoachReadStrip({
       return t("insights.coach.readStrip.insufficient");
     }
     const { low, high, latest, placement } = data.baseline;
-    const key =
-      placement === "above"
+    // A band whose ends format to the same figure ("61–61 bpm") is a steady
+    // value, not a range; say it as one.
+    const steady = fmt(low) === fmt(high);
+    const key = steady
+      ? placement === "above"
+        ? "insights.coach.readStrip.steadyAbove"
+        : placement === "below"
+          ? "insights.coach.readStrip.steadyBelow"
+          : "insights.coach.readStrip.steadyWithin"
+      : placement === "above"
         ? "insights.coach.readStrip.baselineAbove"
         : placement === "below"
           ? "insights.coach.readStrip.baselineBelow"