feat(planning): implement constraint-first leave planner

src/app/benchmark/leave-planner-benchmark.spec.ts

@@ -0,0 +1,37 @@
+import { vi } from 'vitest';
+import {
+	benchmarkReport,
+	benchmarkScenarios,
+	runLeavePlannerBenchmark,
+} from './leave-planner-benchmark';
+
+describe('leave planner benchmark protocol', () => {
+	it('keeps five deterministic scenarios and exercises a later earned consumer', async () => {
+		const scenarios = benchmarkScenarios();
+		expect(scenarios).toHaveLength(5);
+		const chain = scenarios.find((scenario) => scenario.name === 'chained earned entitlements');
+		expect(chain?.request.rules?.map((rule) => rule.id)).toEqual([
+			'wednesday-holidays',
+			'thursday-consumer',
+		]);
+
+		const browserWindow = globalThis.window;
+		vi.stubGlobal('window', undefined);
+		try {
+			const measurements = await runLeavePlannerBenchmark(1);
+			const chained = measurements.find(
+				(measurement) => measurement.scenario === 'chained earned entitlements',
+			);
+			const loaded = measurements.find(
+				(measurement) => measurement.scenario === 'loaded year',
+			);
+			expect(chained?.outcome).toBe('Plan');
+			expect(chained?.placements).toBeGreaterThanOrEqual(3);
+			expect(loaded?.outcome).toBe('Plan');
+			expect(loaded?.deterministic).toBe(true);
+			expect(benchmarkReport(measurements).split('\n')).toHaveLength(6);
+		} finally {
+			vi.stubGlobal('window', browserWindow);
+		}
+	}, 30_000);
+});