feat: default journal period to last 7 days

src/shared/lib/calendar.test.ts

@@ -1,6 +1,11 @@
 import { describe, expect, it } from "vitest";
 
-import { compareDateDesc, isValidPeriod, moscowDate } from "./calendar";
+import {
+	compareDateDesc,
+	defaultPeriod,
+	isValidPeriod,
+	moscowDate,
+} from "./calendar";
 import { calendarDate } from "./calendar.schema";
 
 describe("calendar dates", () => {
@@ -33,6 +38,15 @@ describe("calendar dates", () => {
 		expect(moscowDate(new Date("2026-12-31T21:00:00Z"))).toBe("2027-01-01");
 	});
 
+	it("defaults to the last 7 days including today", () => {
+		const [from, to] = defaultPeriod();
+
+		expect(calendarDate.safeParse(from).success).toBe(true);
+		expect(to).toBe(moscowDate(new Date()));
+		expect((Date.parse(to) - Date.parse(from)) / 86_400_000).toBe(6);
+		expect(from <= to).toBe(true);
+	});
+
 	it("compares dates newest first and keeps dateless rows last", () => {
 		const dates = [null, "2026-01-01", "2026-03-01", "2026-02-01"];