test(dashboard-hero): cover hero-ring-order default + reorder; i18n hint

Add resolveHeroRingOrder unit coverage (default health-score-first,
reconcile against selected set, drop/append, dedupe) plus resolver/serializer
round-trip; hero SSR tests for the default lead + a persisted custom order +
dropped-when-unrendered; Settings picker tests for the pinned health-score
anchor row, its locked-on switch, drag/arrow reorder, and a persisted
non-leading order. Extend the score-rings picker description across six
locales.

src/app/api/dashboard/widgets/route.ts

@@ -139,7 +139,10 @@ const layoutSchema = z.object({
   // resolver reconciles it against the selected set on read/serialize, so a
   // stale or over-long array is clamped rather than rejected. `.max()`
   // bounds the wire length (health-score + up to three score rings).
-  heroRingOrder: z.array(z.enum(HERO_RING_IDS)).max(MAX_HERO_RING_ORDER).optional(),
+  heroRingOrder: z
+    .array(z.enum(HERO_RING_IDS))
+    .max(MAX_HERO_RING_ORDER)
+    .optional(),
 });
 
 async function buildDashboardLayout(userId: string): Promise<DashboardLayout> {
@@ -290,8 +293,7 @@ export const PUT = apiHandler(async (request: NextRequest) => {
   let mergedHeroVisible: boolean | undefined = parsed.data.heroVisible;
   let mergedScoreRings: ScoreRingId[] | undefined =
     parsed.data.selectedScoreRings;
-  let mergedHeroRingOrder: HeroRingId[] | undefined =
-    parsed.data.heroRingOrder;
+  let mergedHeroRingOrder: HeroRingId[] | undefined = parsed.data.heroRingOrder;
   if (
     mergedChartOverlayPrefs === undefined ||
     mergedHeroVisible === undefined ||