Teach the export test mocks about the recorded score days

Four suites hand-roll a Prisma stand-in for the backup builder, so a new
section reaches them as an undefined delegate rather than as an empty
result. Each gains the delegate, and the admin restore round trip gains an
assertion that the day comes back with its composition and per-pillar
scores, not just its headline: a row restored without those looks restored
and answers nothing.

src/app/api/export/encrypted/__tests__/route.test.ts

@@ -25,6 +25,7 @@ vi.mock("@/lib/db", () => ({
     // The hourly shape of a cumulative day, read by
     // `buildIntradayProfileBackupSection`.
     intradayCumulativeProfile: { findMany: vi.fn().mockResolvedValue([]) },
+    healthScoreRecord: { findMany: vi.fn().mockResolvedValue([]) },
     cycleProfile: { findUnique: vi.fn().mockResolvedValue(null) },
     menstrualCycle: { findMany: vi.fn().mockResolvedValue([]) },
     cycleDayLog: { findMany: vi.fn().mockResolvedValue([]) },