feat(measurements): raise the series days cap to ten years

The 365-day cap on /api/measurements/series rejected the iOS app's
"Alle"-range request (days = 3650) with a 422, painting an error
banner on every metric tile. Ten years matches the recurrence
engine's hard cap and the medication course-window upper bound.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/api/measurements/series/__tests__/route.test.ts

@@ -116,6 +116,23 @@ describe("GET /api/measurements/series", () => {
     };
     expect(body.data.points[0].secondary).toBeNull();
   });
+
+  it("accepts the ten-year window (days=3650 — iOS 'Alle'-range)", async () => {
+    // v1.5.5 — the previous 365-day cap rejected the iOS app's
+    // "Alle"-range request with a 422, painting an error banner on
+    // every metric tile. Ten years matches the recurrence engine's
+    // hard cap and the medication course-window upper bound.
+    vi.mocked(getSession).mockResolvedValue(SESSION_OK as never);
+    vi.mocked(prisma.measurement.findMany).mockResolvedValue([] as never);
+    const res = await GET(req("kind=weight&days=3650"));
+    expect(res.status).toBe(200);
+  });
+
+  it("rejects a days value above the ten-year cap", async () => {
+    vi.mocked(getSession).mockResolvedValue(SESSION_OK as never);
+    const res = await GET(req("kind=weight&days=3651"));
+    expect(res.status).toBe(422);
+  });
 });
 
 describe("GET /api/measurements/series — 422 multi-issue (v1.4.43 W6)", () => {

src/app/api/measurements/series/route.ts

@@ -38,7 +38,13 @@ const kindEnum = z.enum([
 
 const querySchema = z.object({
   kind: kindEnum,
-  days: z.coerce.number().int().min(1).max(365).optional().default(30),
+  // v1.5.5 — the 365-day cap rejected the iOS app's "Alle"-range
+  // request (days = 3650) with a 422, painting an error banner on
+  // every metric tile. Ten years matches the recurrence engine's
+  // nextOccurrenceAfter hard cap and the medication course-window
+  // upper bound, so the ceiling stays consistent across the surface
+  // area that the user can wire to a "show me everything" intent.
+  days: z.coerce.number().int().min(1).max(3650).optional().default(30),
 });
 
 const KIND_TO_TYPE: Record<z.infer<typeof kindEnum>, MeasurementType> = {