fix(demo): keep the demo dashboard to the measurement charts

The shared demo account carries onboarding answers, so the setup
checklist stayed on its dashboard for every visitor although none of its
rows can be done there. Under DEMO_MODE the dashboard leaves it out, as
the shell already does with the tour.

The demo seed hides the mood and medication cards, achievements, recent
workouts and check-ups, opens weight, BMI and blood pressure on 90 days,
and resting heart rate on 30 with its 7-day trend and trend line.

scripts/seed-demo.ts

@@ -90,6 +90,7 @@ import {
 import { ENVIRONMENT_LOCATION_AAD } from "../src/lib/crypto/encrypted-columns";
 import { sealInsightsCachedText } from "../src/lib/insights/cached-text-cipher";
 import {
+  DEFAULT_CHART_OVERLAY_PREFS,
   DEFAULT_DASHBOARD_LAYOUT,
   serializeDashboardLayout,
 } from "../src/lib/dashboard-layout";
@@ -497,16 +498,40 @@ async function seed() {
     // One row of six tiles (weight, the two blood-pressure values, resting
     // heart rate, HRV and mood) and the weight chart right below it, so the
     // first screen of the public demo shows the summary, the tiles and the
-    // start of a chart together. Every other tile stays one switch away in
-    // the layout settings; its data is seeded either way. Writing the layout
-    // verbatim keeps the demo's home page stable across default tweaks.
+    // start of a chart together. Below it only the measurement charts: the
+    // mood and medication cards, achievements, recent workouts and check-ups
+    // stay one switch away in the layout settings, their data seeded either
+    // way. Weight, BMI and blood pressure open on 90 days, resting heart rate
+    // on 30 with its 7-day trend and trend line, so each chart shows a shape
+    // rather than a flat week. Writing the layout verbatim keeps the demo's
+    // home page stable across default tweaks.
     const SHOWCASE_TILE_IDS = new Set(["weight", "bp", "pulse", "hrv", "mood"]);
+    const HIDDEN_CARD_IDS = new Set([
+      "mood",
+      "medications",
+      "achievements",
+      "recentWorkouts",
+      "vorsorge",
+    ]);
     const demoDashboardLayout = serializeDashboardLayout({
       ...DEFAULT_DASHBOARD_LAYOUT,
       widgets: DEFAULT_DASHBOARD_LAYOUT.widgets.map((w) => ({
         ...w,
+        visible: w.visible && !HIDDEN_CARD_IDS.has(w.id),
         tileVisible: SHOWCASE_TILE_IDS.has(w.id),
       })),
+      chartOverlayPrefs: {
+        weight: { ...DEFAULT_CHART_OVERLAY_PREFS, rangePoints: 90 },
+        bmi: { ...DEFAULT_CHART_OVERLAY_PREFS, rangePoints: 90 },
+        bp: { ...DEFAULT_CHART_OVERLAY_PREFS, rangePoints: 90 },
+        // The resting heart rate chart is the dashboard's `pulse` chart.
+        pulse: {
+          ...DEFAULT_CHART_OVERLAY_PREFS,
+          rangePoints: 30,
+          showTrendIndicator: true,
+          showTrendArrow: true,
+        },
+      },
     });
     await client.query(
       `UPDATE users SET dashboard_widgets_json = $1 WHERE id = $2`,