feat: redesign match play and add broadcast tooling

src/lib/availability.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, test } from 'vitest';
+import { hoursToRanges, rangesToHours, isTimezone } from './availability';
+
+describe('availability', () => {
+	test('round trips split windows and midnight', () => {
+		const hours = [0, 1, 9, 10, 18, 19, 20, 22, 23];
+		expect(rangesToHours(hoursToRanges(hours))).toEqual(hours);
+	});
+	test('supports an overnight range and deduplicates overlaps', () => {
+		expect(
+			rangesToHours([
+				{ start: '22:00', end: '02:00' },
+				{ start: '23:00', end: '01:00' }
+			])
+		).toEqual([0, 1, 22, 23]);
+	});
+	test('no ranges means no preference', () => {
+		expect(rangesToHours([])).toEqual([]);
+	});
+	test('rejects malformed times and ambiguous full-day ranges', () => {
+		for (const start of ['18:30', '24:00', '-1:00', 'abc', '18:00'])
+			expect(() => rangesToHours([{ start, end: '18:00' }])).toThrow();
+	});
+	test('validates IANA time zones', () => {
+		expect(isTimezone('Europe/Amsterdam')).toBe(true);
+		expect(isTimezone('UTC')).toBe(true);
+		expect(isTimezone('Mars/Olympus')).toBe(false);
+	});
+});