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");