feat(insights): wire <HeroStrip> + <DailyBriefing> into /insights

Replaces `<InsightsPageHero>` with the new `<HeroStrip>` band and
mounts a full-width `<DailyBriefing>` directly below it, ahead of
the existing advisor + status cards which remain untouched.

`useInsightsAdvisorQuery` now lifts the optional `dailyBriefing`
block off the cached payload and validates it client-side via
`dailyBriefingSchema.safeParse`. A malformed cached briefing falls
back to null so the briefing card paints its empty-state CTA
instead of a half-rendered card. Legacy v1.4.19 cached payloads
(no `dailyBriefing` field) round-trip unchanged.

The CompareToggle migrates from the hero meta band into the
DailyBriefing's metaSlot — keeps the page-level comparison control
adjacent to the briefing it scopes.

The hero greeting reads the user's username (HealthLog has no
separate display-name field) and stops at the first whitespace so
"alice" / "alice.smith" both surface "Good morning, alice".

`insights-polish.test.ts` v1.4.19 A3 ratchet updated: the original
"exactly one onRegenerate prop on the page" assertion was a
string-count check that mis-fires now that the briefing card's
empty-state CTA legitimately wires the same handler. The
load-bearing constraint stays — the advisor card must NOT carry
onRegenerate — and is enforced via a tighter JSX-block check.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/__tests__/insights-polish.test.ts

@@ -65,13 +65,31 @@ describe("v1.4.19 A3 — dashboard polish", () => {
 });
 
 describe("v1.4.19 A3 — /insights polish", () => {
-  it("renders exactly ONE on-surface refresh affordance at the page level", () => {
+  it("does NOT mount the legacy advisor-card regenerate handler", () => {
+    const src = load(INSIGHTS_PATH);
+    // The advisor card no longer carries its own onRegenerate handler
+    // that duplicated the hero one. v1.4.20 phase B1 added a second
+    // wiring (the <DailyBriefing> empty-state CTA), which only renders
+    // while the briefing payload is null — its purpose is "generate
+    // today's briefing" rather than "refresh", and it disappears the
+    // moment a briefing exists. The original v1.4.19 ratchet was the
+    // advisor-card duplication; that one stays banned.
+    //
+    // We extract the InsightAdvisorCard JSX block (everything up to
+    // the closing `/>`) and assert no `onRegenerate` prop appears
+    // inside it.
+    const advisorBlock = src.match(/<InsightAdvisorCard\b[^>]*\/>/);
+    expect(advisorBlock).not.toBeNull();
+    expect(advisorBlock?.[0]).not.toContain("onRegenerate");
+  });
+
+  it("hero strip is the always-visible page-level refresh affordance", () => {
     const src = load(INSIGHTS_PATH);
     // The hero owns the page-level regenerate button (mounted via
-    // `onRegenerate={advisor.regenerate}`). The advisor card no
-    // longer carries its own duplicate handler.
-    const regenerateProps = src.match(/onRegenerate=\{advisor\.regenerate\}/g);
-    expect(regenerateProps?.length ?? 0).toBe(1);
+    // `onRegenerate={advisor.regenerate}` on `<HeroStrip>`).
+    expect(src).toMatch(
+      /<HeroStrip[\s\S]*?onRegenerate=\{advisor\.regenerate\}/,
+    );
   });
 
   it("does NOT render the duplicate <TrendCard> tile strip on /insights", () => {

src/app/insights/page.tsx

@@ -41,7 +41,8 @@ import {
 } from "lucide-react";
 import { InsightStatusCard } from "@/components/insights/insight-status-card";
 import { InsightAdvisorCard } from "@/components/insights/insight-advisor-card";
-import { InsightsPageHero } from "@/components/insights/insights-page-hero";
+import { HeroStrip } from "@/components/insights/hero-strip";
+import { DailyBriefing } from "@/components/insights/daily-briefing";
 import { useInsightsAdvisorQuery } from "@/components/insights/use-insights-advisor";
 import { CompareToggle } from "@/components/comparison/compare-toggle";
 // Recharts is ~108 KiB Brotli — defer-load it via a self-contained scatter
@@ -840,10 +841,32 @@ export default function InsightsPage() {
     medicationComplianceStatus?.updatedAt,
   ]);
 
+  // v1.4.20 phase B1 — derive the user's display name for the hero
+  // greeting. We use the username (HealthLog has no separate display-
+  // name field) and stop at the first whitespace so a "first.last"
+  // handle reads cleanly. Falls back to no-name greeting when the user
+  // has no username so the hero never paints "Good morning, undefined".
+  const heroGreetingName =
+    user?.username?.trim() && user.username.trim().length > 0
+      ? user.username.split(/\s+/)[0]
+      : null;
+  const briefingPayload = advisor.payload?.dailyBriefing ?? null;
+  const heroStripUpdatedAt = advisor.payload?.cachedAt ?? heroUpdatedAt;
+
   return (
     <div className="space-y-8">
-      <InsightsPageHero
-        updatedAt={advisor.payload?.cachedAt ?? heroUpdatedAt}
+      <HeroStrip
+        briefing={briefingPayload}
+        updatedAt={heroStripUpdatedAt}
+        userName={heroGreetingName}
+        onRegenerate={advisor.regenerate}
+        regenerating={advisor.isRegenerating}
+      />
+
+      <DailyBriefing
+        briefing={briefingPayload}
+        updatedAt={heroStripUpdatedAt}
+        loading={advisor.isLoading}
         onRegenerate={advisor.regenerate}
         regenerating={advisor.isRegenerating}
         metaSlot={<CompareToggle />}

src/components/insights/use-insights-advisor.ts

@@ -2,6 +2,10 @@
 
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import type { InsightResult } from "@/lib/ai/types";
+import {
+  dailyBriefingSchema,
+  type DailyBriefing as DailyBriefingPayload,
+} from "@/lib/ai/schema";
 import { queryKeys } from "@/lib/query-keys";
 
 /**
@@ -26,6 +30,15 @@ export interface InsightAdvisorPayload {
   cached: boolean;
   cachedAt?: string | null;
   legacyPayload?: boolean;
+  /**
+   * v1.4.20 phase B1 — Daily Briefing block surfaced for the new hero
+   * strip + briefing card. Lives on the cached payload alongside the
+   * legacy `insights` shape (see `aiInsightResponseSchema` — the
+   * `.passthrough()` lets the field round-trip through any provider).
+   * Validated client-side via the schema's `safeParse` to keep a
+   * malformed payload from poisoning the briefing card.
+   */
+  dailyBriefing?: DailyBriefingPayload | null;
 }
 
 async function fetchAdvisor(
@@ -46,7 +59,25 @@ async function fetchAdvisor(
     throw new Error(`HTTP ${res.status}`);
   }
   const json = await res.json();
-  return json.data as InsightAdvisorPayload;
+  const payload = json.data as InsightAdvisorPayload;
+  // The cached `insights` blob may carry a `dailyBriefing` from a fresh
+  // PROMPT_VERSION 4.20.x generation. Lift it onto the payload so
+  // consumers don't have to know the legacy shape.
+  const briefingCandidate = (payload?.insights as Record<string, unknown>)
+    ?.dailyBriefing;
+  if (briefingCandidate != null) {
+    const parsed = dailyBriefingSchema.safeParse(briefingCandidate);
+    if (parsed.success) {
+      payload.dailyBriefing = parsed.data;
+    } else {
+      // Malformed cached briefing — keep null so the UI shows the
+      // empty-state CTA instead of a half-rendered card.
+      payload.dailyBriefing = null;
+    }
+  } else {
+    payload.dailyBriefing = null;
+  }
+  return payload;
 }
 
 export interface UseInsightsAdvisorResult {