Add dashboard report snapshots feature with CRUD operations. Implemented new database migrations for dashboard_report_snapshots, including report type handling. Updated backend routes and models to support snapshot retrieval and upsert functionality. Enhanced frontend components to integrate report snapshot management, including UI for daily and end-cycle reports. Added tests for new functionality to ensure reliability.

utils/__tests__/reportDay.test.ts

@@ -0,0 +1,36 @@
+import { describe, it, expect } from 'vitest';
+import {
+  reportDayToDate,
+  dateToReportDay,
+  feedOrWeightDayToReportDay,
+  formatLocalDate,
+} from '../reportDay.ts';
+
+/** Same instant PdfReportHeader tests use: 22 Mei 2026 00:00 WIB. */
+const START = '2026-05-21T17:00:00.000Z';
+
+describe('reportDayToDate', () => {
+  it('maps day 0 to the cycle start date', () => {
+    const date = reportDayToDate(START, 0);
+    expect(formatLocalDate(date)).toBe('2026-05-22');
+  });
+
+  it('maps day 1 to the day after cycle start', () => {
+    const date = reportDayToDate(START, 1);
+    expect(formatLocalDate(date)).toBe('2026-05-23');
+  });
+});
+
+describe('dateToReportDay', () => {
+  it('maps cycle start calendar date to report day 0', () => {
+    expect(dateToReportDay(START, reportDayToDate(START, 0))).toBe(0);
+  });
+});
+
+describe('feedOrWeightDayToReportDay', () => {
+  it('maps 1-based feed day 1 on cycle start to report day 0', () => {
+    expect(feedOrWeightDayToReportDay(1)).toBe(0);
+    const start = reportDayToDate(START, 0);
+    expect(dateToReportDay(START, start)).toBe(0);
+  });
+});