test: bring fixtures in line with the nap rule and the recovery read

Correlation fixtures wrote minute-long midday sleeps, which the nap
rule now reads as naps; they write nights. The analytics test mocks the
user read the empty recovery reason makes, and the control-byte guard
asserts the size of its sweep.

src/__tests__/api/analytics/since-cap.test.ts

@@ -35,6 +35,8 @@ import { describe, it, expect, vi, beforeEach } from "vitest";
 vi.mock("@/lib/db", () => ({
   prisma: {
     measurement: { findMany: vi.fn() },
+    // The empty recovery page reads the Oura fields for its reason.
+    user: { findUnique: vi.fn().mockResolvedValue(null) },
   },
 }));
 

src/__tests__/no-control-bytes-guard.test.ts

@@ -24,6 +24,8 @@ describe("source files carry no raw control bytes", () => {
       floor: 3000,
       extensions: [".ts", ".tsx", ".js", ".mjs", ".css", ".json", ".md"],
     }).filter((file) => !file.startsWith("generated/"));
+    // A sweep that read nothing would agree with any tree.
+    expect(files.length).toBeGreaterThan(3000);
     const offenders: string[] = [];
     for (const file of files) {
       const lines = readFileSync(join(src, file), "utf8").split("\n");

src/lib/ai/coach/__tests__/correlations-read.test.ts

@@ -250,8 +250,9 @@ describe("readCoachCorrelations", () => {
       // Next-day sleep falls as today's burden rises (8h baseline − burden).
       measurements.push({
         type: "SLEEP_DURATION",
-        value: 8 - burden,
-        measuredAt: new Date(base + (i + 1) * 86_400_000),
+        // A night of hours waking at 07:00, not a midday minute-long nap.
+        value: (8 - burden) * 60,
+        measuredAt: new Date(base + (i + 1) * 86_400_000 - 5 * 3_600_000),
       });
     }
 
@@ -346,8 +347,9 @@ describe("readCoachCorrelations", () => {
       // Higher pressure today → shorter sleep tomorrow (a clean negative r).
       measurements.push({
         type: "SLEEP_DURATION",
-        value: 8 - swing * 0.5,
-        measuredAt: new Date(base + (i + 1) * 86_400_000),
+        // A night of hours waking at 07:00, not a midday minute-long nap.
+        value: (8 - swing * 0.5) * 60,
+        measuredAt: new Date(base + (i + 1) * 86_400_000 - 5 * 3_600_000),
       });
     }
 

src/lib/clinician-share/__tests__/exif-strip.test.ts

@@ -53,7 +53,10 @@ describe("stripImageMetadata — passthrough", () => {
 describe("stripImageMetadata — JPEG", () => {
   // SOI + APP0(JFIF) + APP1(Exif w/ GPS) + APP2(ICC) + COM + DQT + SOS + scan.
   const soi = Buffer.from([0xff, 0xd8]);
-  const app0 = jpegSegment(0xe0, Buffer.from("JFIF\0\x01\x01\0\0\x01\0\x01\0\0"));
+  const app0 = jpegSegment(
+    0xe0,
+    Buffer.from("JFIF\0\x01\x01\0\0\x01\0\x01\0\0"),
+  );
   const exifPayload = Buffer.concat([
     Buffer.from("Exif\0\0"),
     // A recognisable GPS marker string we can assert is gone.

src/lib/insights/derived/__tests__/derived-assessment.test.ts

@@ -76,6 +76,7 @@ const sleepScore: SleepScoreValue = {
   ],
   windowNights: 20,
   rhythmNights: 20,
+  rhythmMinNights: 3,
   series: [78, 82],
 };