feat(planning): implement constraint-first leave planner

docs/benchmark/README.md

@@ -0,0 +1,28 @@
+# Mobile leave-planner benchmark
+
+Open the deployed application at `/benchmark` on the reference phone. Tap
+**Run benchmark**, wait for the five scenarios to finish, then tap **Copy
+report** and save the tab-separated output with the date and build identifier.
+
+The harness measures preparation, asynchronous calculation, and total wall
+time separately. It records the outcome, last completed quality stage,
+placement count, and determinism between repetitions. `PlanningIncomplete` is
+not a conflict: its last completed stage and incumbent are retained.
+
+## Protocol
+
+- Record phone model, OS version, browser/version, application build, and
+  battery level.
+- Use a cool phone, unplugged, with other applications closed. Record whether
+  the device became warm or throttled during the run.
+- Run the benchmark three times after one warm-up run. Do not interact with
+  the page while a run is active.
+- Representative and loaded scenarios should normally complete below five
+  seconds; every scenario must return within ten seconds. These are release
+  measurements, not CI timing assertions.
+- Keep the copied report unchanged, including any incomplete outcomes or
+  hardware limitations. No mobile-device measurement is claimed by the source
+  tree until a human records it here.
+
+The browser page uses the same `planLeave(request)` operation as the calendar
+and adds no solver or backend dependency.

src/app/app.html

@@ -1,5 +1,6 @@
 <app-dark-light-mode-button class="modeButton"></app-dark-light-mode-button>
-<main class="main">
+@if (showPlanner()) {
+	<main class="main">
 		<h1 style="display: flex; gap: 1rem"><mat-icon>beach_access</mat-icon> {{ title() }}</h1>
 		<div class="content">
 			<app-user-input></app-user-input>
@@ -7,4 +8,6 @@
 			<mat-divider />
 			<app-calendar-year></app-calendar-year>
 		</div>
-</main>
+	</main>
+}
+<router-outlet></router-outlet>

src/app/app.routes.ts

@@ -1,3 +1,9 @@
 import { Routes } from '@angular/router';
 
-export const routes: Routes = [];
+export const routes: Routes = [
+	{
+		path: 'benchmark',
+		loadComponent: () =>
+			import('./benchmark/benchmark-page').then((module) => module.BenchmarkPage),
+	},
+];

src/app/app.spec.ts

@@ -22,4 +22,16 @@ describe('App', () => {
 		const compiled = fixture.nativeElement as HTMLElement;
 		expect(compiled.querySelector('h1')?.textContent).toContain('vac-optimizer');
 	});
+
+	it('does not mount the normal planner shell on the benchmark route', () => {
+		const originalPath = window.location.pathname;
+		history.pushState({}, '', '/benchmark');
+		try {
+			const fixture = TestBed.createComponent(App);
+			fixture.detectChanges();
+			expect(fixture.nativeElement.querySelector('app-calendar-year')).toBeNull();
+		} finally {
+			history.replaceState({}, '', originalPath);
+		}
+	});
 });

src/app/app.ts

@@ -1,4 +1,4 @@
-import { ChangeDetectionStrategy, Component, signal } from '@angular/core';
+import { ChangeDetectionStrategy, Component, inject, signal } from '@angular/core';
 import { MatDatepickerModule } from '@angular/material/datepicker';
 import { provideNativeDateAdapter } from '@angular/material/core';
 import { MatDivider } from '@angular/material/divider';
@@ -6,6 +6,11 @@ import { UserInput } from './components/user-input/user-input';
 import { CalendarYear } from './components/calendar-year/calendar-year';
 import { DarkLightModeButton } from './components/dark-light-mode-button/dark-light-mode-button';
 import { MatIcon } from '@angular/material/icon';
+import { NavigationEnd, Router, RouterOutlet } from '@angular/router';
+
+function isBenchmarkUrl(url: string): boolean {
+	return url.split(/[?#]/, 1)[0].replace(/\/+$/, '') === '/benchmark';
+}
 
 @Component({
 	selector: 'app-root',
@@ -15,8 +20,8 @@ import { MatIcon } from '@angular/material/icon';
 		UserInput,
 		CalendarYear,
 		DarkLightModeButton,
-		DarkLightModeButton,
 		MatIcon,
+		RouterOutlet,
 	],
 	templateUrl: './app.html',
 	styleUrl: './app.scss',
@@ -24,5 +29,16 @@ import { MatIcon } from '@angular/material/icon';
 	changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class App {
+	private readonly router = inject(Router);
 	protected readonly title = signal('vac-optimizer');
+	protected readonly showPlanner = signal(
+		!isBenchmarkUrl(typeof window !== 'undefined' ? window.location.pathname : this.router.url),
+	);
+
+	constructor() {
+		this.router.events.subscribe((event) => {
+			if (event instanceof NavigationEnd)
+				this.showPlanner.set(!isBenchmarkUrl(event.urlAfterRedirects));
+		});
+	}
 }

src/app/benchmark/benchmark-page.ts

@@ -0,0 +1,44 @@
+import { ChangeDetectionStrategy, Component, inject, signal } from '@angular/core';
+import { benchmarkReport, runLeavePlannerBenchmark } from './leave-planner-benchmark';
+import { TranslationService } from '../services/translation-service';
+
+@Component({
+	selector: 'app-benchmark-page',
+	template: `
+		<section aria-labelledby="benchmark-title">
+			<h2 id="benchmark-title">{{ tr().benchmark.title }}</h2>
+			<p>{{ tr().benchmark.instructions }}</p>
+			<button type="button" (click)="run()" [disabled]="running()">
+				{{ running() ? tr().benchmark.running : tr().benchmark.run }}
+			</button>
+			<button type="button" (click)="copy()" [disabled]="!report()">
+				{{ tr().benchmark.copy }}
+			</button>
+			<pre aria-live="polite">{{ report() }}</pre>
+		</section>
+	`,
+	changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class BenchmarkPage {
+	private readonly translationService = inject(TranslationService);
+	readonly running = signal(false);
+	readonly report = signal('');
+
+	get tr() {
+		return this.translationService.tr;
+	}
+
+	async run(): Promise<void> {
+		this.running.set(true);
+		try {
+			this.report.set(benchmarkReport(await runLeavePlannerBenchmark(3)));
+		} finally {
+			this.running.set(false);
+		}
+	}
+
+	async copy(): Promise<void> {
+		if (this.report() && typeof navigator !== 'undefined' && navigator.clipboard)
+			await navigator.clipboard.writeText(this.report());
+	}
+}

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);
+});

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

@@ -0,0 +1,207 @@
+import { planLeave, PlanningOutcome, PlanningRequest } from '../services/leave-planner.service';
+
+export interface BenchmarkScenario {
+	name: string;
+	request: PlanningRequest;
+}
+
+export interface BenchmarkMeasurement {
+	scenario: string;
+	repetition: number;
+	preparationMs: number;
+	calculationMs: number;
+	wallMs: number;
+	outcome: PlanningOutcome['kind'];
+	lastCompletedStage?: string;
+	placements: number;
+	deterministic: boolean;
+}
+
+const balance = (
+	id: string,
+	type: 'cp' | 'rtt' | 'other',
+	quantity: number,
+	expiryDate = '2024-12-31',
+) => ({
+	id,
+	type,
+	quantity,
+	availableFrom: '2024-01-01',
+	expiryDate,
+});
+
+export function benchmarkScenarios(): BenchmarkScenario[] {
+	const horizon = { start: '2024-01-01', end: '2025-01-01' };
+	return [
+		{
+			name: 'representative year',
+			request: {
+				horizon,
+				balances: [balance('cp', 'cp', 20), balance('rtt', 'rtt', 10)],
+				rules: [],
+			},
+		},
+		{
+			name: 'typed obligations',
+			request: {
+				horizon,
+				balances: [balance('cp', 'cp', 5), balance('rtt', 'rtt', 5)],
+				rules: [
+					{
+						id: 'cp-window',
+						type: 'time_window',
+						force: 'obligation',
+						startDate: '2024-04-01',
+						endDate: '2024-04-12',
+						placeDays: 2,
+						placeType: 'cp',
+					},
+					{
+						id: 'rtt-window',
+						type: 'time_window',
+						force: 'obligation',
+						startDate: '2024-05-01',
+						endDate: '2024-05-12',
+						placeDays: 2,
+						placeType: 'rtt',
+					},
+				],
+			},
+		},
+		{
+			name: 'chained earned entitlements',
+			request: {
+				horizon: { start: '2024-04-25', end: '2024-05-15' },
+				balances: [balance('cp', 'cp', 2), balance('rtt', 'rtt', 0, '2026-01-01')],
+				rules: [
+					{
+						id: 'wednesday-holidays',
+						type: 'if_then',
+						force: 'obligation',
+						dayOfWeek: 3,
+						placeDays: 1,
+						placeType: 'cp',
+						placement: 'after',
+						rewardDays: 1,
+						rewardType: 'rtt',
+					},
+					{
+						id: 'thursday-consumer',
+						type: 'if_then',
+						force: 'obligation',
+						dayOfWeek: 4,
+						placeDays: 1,
+						placeType: 'rtt',
+						placement: 'before',
+						rewardDays: 0,
+					},
+				],
+			},
+		},
+		{
+			name: 'deliberate conflict',
+			request: {
+				horizon,
+				balances: [balance('cp', 'cp', 1)],
+				rules: [
+					{
+						id: 'rtt-required',
+						type: 'time_window',
+						force: 'obligation',
+						startDate: '2024-04-01',
+						endDate: '2024-04-05',
+						placeDays: 1,
+						placeType: 'rtt',
+					},
+				],
+			},
+		},
+		{
+			name: 'loaded year',
+			request: {
+				horizon,
+				balances: Array.from({ length: 12 }, (_, index) =>
+					balance(`cp-${index}`, index % 2 ? 'rtt' : 'cp', 12),
+				),
+				rules: Array.from({ length: 8 }, (_, index) => ({
+					id: `window-${index}`,
+					type: 'time_window' as const,
+					force: index < 3 ? ('obligation' as const) : ('preference' as const),
+					startDate: `2024-${String(index + 1).padStart(2, '0')}-01`,
+					endDate: `2024-${String(index + 1).padStart(2, '0')}-28`,
+					placeDays: 3,
+					placeType: index % 2 ? ('rtt' as const) : ('any' as const),
+				})),
+			},
+		},
+	];
+}
+
+function resultSummary(outcome: PlanningOutcome): {
+	outcome: PlanningOutcome['kind'];
+	lastCompletedStage?: string;
+	placements: number;
+} {
+	if (outcome.kind === 'Plan')
+		return {
+			outcome: outcome.kind,
+			lastCompletedStage: outcome.lastCompletedStage,
+			placements: outcome.placements.length,
+		};
+	if (outcome.kind === 'PlanningIncomplete')
+		return {
+			outcome: outcome.kind,
+			lastCompletedStage: outcome.lastCompletedStage,
+			placements: outcome.incumbent?.placements.length ?? 0,
+		};
+	return { outcome: outcome.kind, placements: 0 };
+}
+
+export async function runLeavePlannerBenchmark(repetitions = 1): Promise<BenchmarkMeasurement[]> {
+	const measurements: BenchmarkMeasurement[] = [];
+	for (const scenario of benchmarkScenarios()) {
+		let previous: string | undefined;
+		for (let repetition = 1; repetition <= repetitions; repetition++) {
+			const preparationStart = performance.now();
+			const request = structuredClone(scenario.request);
+			const preparationMs = performance.now() - preparationStart;
+			const calculationStart = performance.now();
+			const outcome = await planLeave(request);
+			const calculationMs = performance.now() - calculationStart;
+			const summary = resultSummary(outcome);
+			const stable = JSON.stringify(outcome);
+			measurements.push({
+				scenario: scenario.name,
+				repetition,
+				preparationMs,
+				calculationMs,
+				wallMs: preparationMs + calculationMs,
+				...summary,
+				deterministic: previous === undefined || previous === stable,
+			});
+			previous = stable;
+		}
+	}
+	return measurements;
+}
+
+export function benchmarkReport(measurements: BenchmarkMeasurement[]): string {
+	const header =
+		'scenario\trepetition\tpreparation_ms\tcalculation_ms\twall_ms\toutcome\tlast_stage\tplacements\tdeterministic';
+	return [
+		header,
+		...measurements.map((item) =>
+			[
+				item.scenario,
+				item.repetition,
+				item.preparationMs.toFixed(1),
+				item.calculationMs.toFixed(1),
+				item.wallMs.toFixed(1),
+				item.outcome,
+				item.lastCompletedStage ?? '',
+				item.placements,
+				item.deterministic,
+			].join('\t'),
+		),
+	].join('\n');
+}

src/app/components/calendar-year/calendar-year-planning.spec.ts

@@ -0,0 +1,146 @@
+import { provideZonelessChangeDetection } from '@angular/core';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { vi } from 'vitest';
+import { CalendarYear } from './calendar-year';
+import { CalendarService, SelectedDates, SelectableDayType } from '../../services/calendar-service';
+import {
+	PlanOutcome,
+	PlanningConflictOutcome,
+	PlanningIncompleteOutcome,
+	InvalidInputOutcome,
+	PlanningOutcome,
+} from '../../services/leave-planner.service';
+import { UserInputService } from '../../services/user-input-service';
+
+const invalid: InvalidInputOutcome = {
+	kind: 'InvalidInput',
+	reasons: [],
+};
+
+const conflict: PlanningConflictOutcome = {
+	kind: 'PlanningConflict',
+	reasons: [],
+	conflictingRuleIds: ['rule'],
+};
+
+const incomplete: PlanningIncompleteOutcome = {
+	kind: 'PlanningIncomplete',
+	completedStages: [],
+	reasons: [],
+};
+
+const plan: PlanOutcome = {
+	kind: 'Plan',
+	horizon: { start: '2024-01-01', end: '2025-01-01' },
+	placements: [],
+	timeOffPeriods: [],
+	preferences: [],
+	remainingBalances: [],
+	metrics: {
+		unplacedAtRisk: 0,
+		nonWorkingDayGain: 0,
+		longestWorkSequence: 0,
+		shortSequenceDeficit: 0,
+		supportingPlacements: 0,
+		preferenceSatisfaction: [],
+	},
+	completedStages: ['dates'],
+	lastCompletedStage: 'dates',
+};
+
+describe('CalendarYear planning outcome boundary', () => {
+	it.each([
+		['InvalidInput', invalid],
+		['PlanningConflict', conflict],
+		['PlanningIncomplete without incumbent', incomplete],
+	] as const)('clears stale calendar results for %s', async (_, outcome: PlanningOutcome) => {
+		const calendar = {
+			getSelectedDatesForYear: vi.fn(() => new SelectedDates()),
+			getDefaultPlanningHorizon: vi.fn(() => ({ start: '2024-01-01', end: '2025-01-01' })),
+			planLeave: vi.fn(async () => outcome),
+			selectedDatesForPlan: vi.fn(() => new SelectedDates()),
+		};
+		await TestBed.configureTestingModule({
+			imports: [CalendarYear],
+			providers: [
+				provideZonelessChangeDetection(),
+				{ provide: CalendarService, useValue: calendar },
+			],
+		}).compileComponents();
+		const userInput = TestBed.inject(UserInputService);
+		userInput.remainingVacationDaysSignal.set([
+			{
+				id: 'stale',
+				type: SelectableDayType.CP,
+				numberOfDays: 1,
+				expiryDate: new Date('2025-01-01'),
+			},
+		]);
+		const fixture: ComponentFixture<CalendarYear> = TestBed.createComponent(CalendarYear);
+		fixture.detectChanges();
+		await fixture.whenStable();
+
+		expect(userInput.remainingVacationDaysSignal()).toEqual([]);
+	});
+
+	it('keeps a returned incumbent/result visible only when an outcome supplies one', async () => {
+		const calendar = {
+			getSelectedDatesForYear: vi.fn(() => new SelectedDates()),
+			getDefaultPlanningHorizon: vi.fn(() => ({ start: '2024-01-01', end: '2025-01-01' })),
+			planLeave: vi.fn(async () => plan),
+			selectedDatesForPlan: vi.fn(() => new SelectedDates()),
+		};
+		await TestBed.configureTestingModule({
+			imports: [CalendarYear],
+			providers: [
+				provideZonelessChangeDetection(),
+				{ provide: CalendarService, useValue: calendar },
+			],
+		}).compileComponents();
+		const userInput = TestBed.inject(UserInputService);
+		userInput.remainingVacationDaysSignal.set([]);
+		const fixture = TestBed.createComponent(CalendarYear);
+		fixture.detectChanges();
+		await fixture.whenStable();
+		expect(userInput.remainingVacationDaysSignal()).toEqual([]);
+	});
+
+	it('turns planner rejection into an incomplete error and clears loading', async () => {
+		const calendar = {
+			getSelectedDatesForYear: vi.fn(() => new SelectedDates()),
+			getDefaultPlanningHorizon: vi.fn(() => ({ start: '2024-01-01', end: '2025-01-01' })),
+			planLeave: vi.fn(async () => {
+				throw new Error('planner exploded');
+			}),
+			selectedDatesForPlan: vi.fn(() => new SelectedDates()),
+		};
+		await TestBed.configureTestingModule({
+			imports: [CalendarYear],
+			providers: [
+				provideZonelessChangeDetection(),
+				{ provide: CalendarService, useValue: calendar },
+			],
+		}).compileComponents();
+		const userInput = TestBed.inject(UserInputService);
+		userInput.remainingVacationDaysSignal.set([
+			{
+				id: 'stale',
+				type: SelectableDayType.CP,
+				numberOfDays: 1,
+				expiryDate: new Date('2025-01-01'),
+			},
+		]);
+		const fixture = TestBed.createComponent(CalendarYear);
+		fixture.detectChanges();
+		await fixture.whenStable();
+		await new Promise<void>((resolve) => setTimeout(resolve, 0));
+		fixture.detectChanges();
+
+		const outcome = fixture.componentInstance['planningOutcome']();
+		expect(outcome?.kind).toBe('PlanningIncomplete');
+		if (outcome?.kind === 'PlanningIncomplete')
+			expect(outcome.reasons[0].code).toBe('planner-error');
+		expect(fixture.componentInstance['isLoading']()).toBe(false);
+		expect(userInput.remainingVacationDaysSignal()).toEqual([]);
+	});
+});

src/app/components/calendar-year/calendar-year.html

@@ -10,6 +10,17 @@
 			</div>
 		</div>
 	}
+	@if (planningOutcome()?.kind === 'InvalidInput') {
+		<p class="planning-status" role="alert">{{ tr().planning.invalidInput }}</p>
+	} @else if (planningOutcome()?.kind === 'PlanningConflict') {
+		<p class="planning-status" role="alert">{{ tr().planning.conflict }}</p>
+	} @else if (planningOutcome()?.kind === 'PlanningIncomplete') {
+		<p class="planning-status" role="status">
+			{{ hasPlannerError() ? tr().planning.error : tr().planning.incomplete }}
+		</p>
+	} @else if (planningOutcome()?.kind === 'Plan') {
+		<p class="planning-status" role="status">{{ tr().planning.complete }}</p>
+	}
 	@for (month of months; track $index) {
 		<mat-card class="card">
 			<mat-card-content>

src/app/components/calendar-year/calendar-year.ts

@@ -7,6 +7,8 @@ import { MatProgressSpinner } from '@angular/material/progress-spinner';
 import { DateCacheService } from '../../services/date-cache.service';
 import { RuleService } from '../../services/rule-service';
 import { TranslationService } from '../../services/translation-service';
+import { PlanOutcome, PlanningOutcome } from '../../services/leave-planner.service';
+import { SelectableDayType, VacDay } from '../../services/calendar-service';
 
 @Component({
 	selector: 'app-calendar-year',
@@ -28,6 +30,30 @@ export class CalendarYear {
 	protected isLoading = signal(true);
 
 	protected loadingProgress = signal(0);
+	protected planningOutcome = signal<PlanningOutcome | null>(null);
+	private calculationVersion = 0;
+
+	protected hasPlannerError(): boolean {
+		const outcome = this.planningOutcome();
+		return (
+			outcome?.kind === 'PlanningIncomplete' && outcome.reasons[0]?.code === 'planner-error'
+		);
+	}
+
+	private stageProgress(stage: string): number {
+		if (stage === 'complete') return 100;
+		if (stage === 'validation') return 5;
+		if (stage === 'obligations') return 20;
+		if (stage === 'at-risk') return 35;
+		if (stage.startsWith('preference:')) return 50;
+		if (stage === 'non-working-day-gain') return 65;
+		if (stage === 'longest-work-sequence') return 72;
+		if (stage === 'short-sequence-deficit') return 79;
+		if (stage === 'supporting-placements') return 86;
+		if (stage === 'expiry') return 93;
+		if (stage === 'dates') return 98;
+		return this.loadingProgress();
+	}
 
 	// Use DateCacheService instead of creating Date objects
 	private get currentMonth() {
@@ -43,37 +69,90 @@ export class CalendarYear {
 			this.userInput.computeTriggerSignal();
 
 			this.selectedDates = this.calendarService.getSelectedDatesForYear();
+			this.planningOutcome.set(null);
+			this.userInput.remainingVacationDaysSignal.set([]);
 			const vacationData = untracked(() => this.userInput.vacationNumberSignal());
 			const currentRules = untracked(() => this.ruleService.rules);
 
-			console.log('Optimizing vacations with data:', vacationData);
-			console.log('Using rules:', currentRules);
-
 			this.isLoading.set(true);
 			this.loadingProgress.set(0);
+			const version = ++this.calculationVersion;
 			// Defer execution to allow UI to update
 			queueMicrotask(() => {
 				void (async () => {
-					if (this.selectedDates) {
-						// Create a deep copy to avoid mutating the original signal data
-						const vacationDaysCopy = vacationData.map((vd) => ({ ...vd }));
-						const remainingDays = await this.selectedDates.optimizeVacations(
-							vacationDaysCopy,
-							currentRules,
-							this.calendarService,
-							(progress: number) => {
-								this.loadingProgress.set(progress);
+					try {
+						const outcome = await this.calendarService.planLeave({
+							horizon: this.calendarService.getDefaultPlanningHorizon(),
+							balances: vacationData.map((balance) => ({
+								id: balance.id,
+								type: balance.type,
+								quantity: balance.numberOfDays,
+								availableFrom: balance.availableDate,
+								expiryDate: balance.expiryDate,
+							})),
+							rules: currentRules,
+							progress: (stage) => {
+								if (version === this.calculationVersion)
+									this.loadingProgress.set(this.stageProgress(stage));
 							},
-						);
-						// Update the remaining vacation days signal
-						this.userInput.remainingVacationDaysSignal.set(remainingDays);
-					}
+						});
+						if (version !== this.calculationVersion) return;
+						this.applyOutcome(outcome);
+					} catch (error) {
+						if (version !== this.calculationVersion) return;
+						this.applyOutcome({
+							kind: 'PlanningIncomplete',
+							completedStages: [],
+							reasons: [
+								{
+									code: 'planner-error',
+									message:
+										error instanceof Error
+											? error.message
+											: 'The planner failed unexpectedly.',
+								},
+							],
+						});
+					} finally {
+						if (version === this.calculationVersion) {
+							this.loadingProgress.set(100);
 							this.isLoading.set(false);
+						}
+					}
 				})();
 			});
 		});
 	}
 
+	private applyOutcome(outcome: PlanningOutcome): void {
+		this.planningOutcome.set(outcome);
+		const plan =
+			outcome.kind === 'Plan'
+				? outcome
+				: outcome.kind === 'PlanningIncomplete'
+					? outcome.incumbent
+					: undefined;
+		if (plan) {
+			this.selectedDates = this.calendarService.selectedDatesForPlan(plan);
+			this.userInput.remainingVacationDaysSignal.set(this.toLegacyBalances(plan));
+			return;
+		}
+		this.selectedDates = this.calendarService.getSelectedDatesForYear();
+		this.userInput.remainingVacationDaysSignal.set([]);
+	}
+
+	private toLegacyBalances(plan: PlanOutcome): VacDay[] {
+		return plan.remainingBalances.map((balance) => ({
+			id: balance.id,
+			type: balance.type as SelectableDayType,
+			numberOfDays: balance.quantity,
+			availableDate: new Date(`${balance.availableFrom}T00:00:00`),
+			expiryDate: new Date(`${balance.expiryDate}T00:00:00`),
+			classification: balance.classification,
+			reason: balance.reason,
+		}));
+	}
+
 	protected selectedDates: SelectedDates = new SelectedDates();
 
 	getYear(monthIndex: number): number {

src/app/components/rules-panel/rules-panel.html

@@ -37,12 +37,17 @@
 								>
 							</mat-slide-toggle>
 							<div class="rule-actions">
-								<button mat-icon-button (click)="startEdit(rule, $event)">
+								<button
+									mat-icon-button
+									[aria-label]="tr().rules.editRule"
+									(click)="startEdit(rule, $event)"
+								>
 									<mat-icon>edit</mat-icon>
 								</button>
 								<button
 									mat-icon-button
 									color="warn"
+									[aria-label]="tr().rules.deleteRule"
 									(click)="deleteRule(rule.id, $event)"
 								>
 									<mat-icon>delete</mat-icon>
@@ -59,6 +64,16 @@
 							<mat-label>{{ tr().rules.ruleName }}</mat-label>
 							<input matInput [(ngModel)]="$any(editBuffer).name" required />
 						</mat-form-field>
+						<mat-form-field class="full-width">
+							<mat-label>{{ tr().rules.force }}</mat-label>
+							<mat-select [(ngModel)]="$any(editBuffer).force">
+								@for (option of forceOptions; track option.value) {
+									<mat-option [value]="option.value">{{
+										option.label()
+									}}</mat-option>
+								}
+							</mat-select>
+						</mat-form-field>
 
 						@if ($any(editBuffer).type === RuleType.IF_THEN) {
 							<div class="editor-row">
@@ -210,6 +225,14 @@
 						<mat-label>{{ tr().rules.ruleName }}</mat-label>
 						<input matInput [(ngModel)]="$any(editBuffer).name" required />
 					</mat-form-field>
+					<mat-form-field class="full-width">
+						<mat-label>{{ tr().rules.force }}</mat-label>
+						<mat-select [(ngModel)]="$any(editBuffer).force">
+							@for (option of forceOptions; track option.value) {
+								<mat-option [value]="option.value">{{ option.label() }}</mat-option>
+							}
+						</mat-select>
+					</mat-form-field>
 
 					@if (newRuleType() === RuleType.IF_THEN) {
 						<div class="editor-row">

src/app/components/rules-panel/rules-panel.ts

@@ -101,6 +101,10 @@ export class RulesPanel {
 	protected readonly rewardDayTypes = Object.values(SelectableDayType).filter(
 		(t) => t !== SelectableDayType.ANY,
 	);
+	protected readonly forceOptions = [
+		{ value: 'obligation' as const, label: () => this.tr().rules.obligation },
+		{ value: 'preference' as const, label: () => this.tr().rules.preference },
+	];
 
 	protected get daysOfWeek() {
 		const tr = this.tr();
@@ -186,6 +190,7 @@ export class RulesPanel {
 			this.editBuffer = {
 				name: this.tr().rules.defaultNewRuleName,
 				type: RuleType.IF_THEN,
+				force: 'preference',
 				dayOfWeek: 6,
 				placeDays: 2,
 				placeType: SelectableDayType.CP,
@@ -197,6 +202,7 @@ export class RulesPanel {
 			this.editBuffer = {
 				name: this.tr().rules.defaultNewPeriodName,
 				type: RuleType.TIME_WINDOW,
+				force: 'preference',
 				startDate: new Date(),
 				endDate: new Date(new Date().getTime() + 7 * 24 * 60 * 60 * 1000),
 				placeDays: 5,
@@ -212,6 +218,7 @@ export class RulesPanel {
 
 	public getRuleSummary(rule: VacationRule): string {
 		const tr = this.tr();
+		const forceLabel = rule.force === 'obligation' ? tr.rules.obligation : tr.rules.preference;
 		if (rule.type === RuleType.IF_THEN) {
 			const ifThen = rule as IfThenRule;
 			const dayLabel = this.daysOfWeek.find((d) => d.value === ifThen.dayOfWeek)?.label ?? '';
@@ -223,13 +230,13 @@ export class RulesPanel {
 				.toLowerCase();
 			const rewardTypeLabel = this.getDayTypeLabel(ifThen.rewardType);
 
-			return tr.rules.ifThenTemplate
+			return `[${forceLabel}] ${tr.rules.ifThenTemplate
 				.replace('{day}', dayLabel)
 				.replace('{placeDays}', String(ifThen.placeDays))
 				.replace('{placeType}', placeTypeLabel)
 				.replace('{placement}', placementLabel)
 				.replace('{rewardDays}', String(ifThen.rewardDays))
-				.replace('{rewardType}', rewardTypeLabel);
+				.replace('{rewardType}', rewardTypeLabel)}`;
 		} else {
 			const timeWindow = rule as TimeWindowRule;
 			const placeTypeLabel = this.getDayTypeLabel(timeWindow.placeType);
@@ -240,11 +247,11 @@ export class RulesPanel {
 				this.translationService.locale(),
 			);
 
-			return tr.rules.timeWindowTemplate
+			return `[${forceLabel}] ${tr.rules.timeWindowTemplate
 				.replace('{placeDays}', String(timeWindow.placeDays))
 				.replace('{placeType}', placeTypeLabel)
 				.replace('{startDate}', startDateStr)
-				.replace('{endDate}', endDateStr);
+				.replace('{endDate}', endDateStr)}`;
 		}
 	}
 }

src/app/components/user-input/user-input.ts

@@ -54,10 +54,29 @@ export class UserInput {
 					},
 				);
 				const expiresLabel = this.tr().userInput.expires;
-				return `${day.numberOfDays} ${typeName} (${expiresLabel} ${expiryDate})`;
+				const classification = day.classification
+					? this.getClassificationLabel(day.classification)
+					: '';
+				const reason = day.classification ? this.getReasonLabel(day.classification) : '';
+				const explanation = classification ? `${classification}: ${reason}; ` : '';
+				return `${day.numberOfDays} ${typeName} (${explanation}${expiresLabel} ${expiryDate})`;
 			});
 	});
 
+	private getClassificationLabel(classification: NonNullable<VacDay['classification']>): string {
+		const labels = this.tr().userInput.remainingClassification;
+		if (classification === 'unavoidable-expiry') return labels.unavoidableExpiry;
+		if (classification === 'at-risk') return labels.atRisk;
+		return labels.deferred;
+	}
+
+	private getReasonLabel(classification: NonNullable<VacDay['classification']>): string {
+		const labels = this.tr().userInput.remainingReason;
+		if (classification === 'unavoidable-expiry') return labels.unavoidableExpiry;
+		if (classification === 'at-risk') return labels.atRisk;
+		return labels.deferred;
+	}
+
 	protected hasRemainingDays = computed(() => this.remainingDays() > 0);
 
 	protected get daysOff() {

src/app/components/userInput/day-input/day-input.html

@@ -19,6 +19,17 @@
 			}
 		</mat-select>
 	</mat-form-field>
+	<mat-form-field class="dateInput">
+		<mat-label>{{ tr().userInput.availableDate }}</mat-label>
+		<input
+			matInput
+			[matDatepicker]="availablePicker"
+			[value]="day().availableDate"
+			(dateChange)="addAvailabilityEvent($event)"
+		/>
+		<mat-datepicker-toggle matIconSuffix [for]="availablePicker"></mat-datepicker-toggle>
+		<mat-datepicker #availablePicker></mat-datepicker>
+	</mat-form-field>
 	<mat-form-field class="dateInput">
 		<mat-label>{{ tr().userInput.chooseDate }}</mat-label>
 		<input
@@ -31,7 +42,7 @@
 		<mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
 		<mat-datepicker #picker></mat-datepicker>
 	</mat-form-field>
-	<button matFab aria-label="Delete entry" (click)="deleteEntry.emit()">
+	<button matFab [aria-label]="tr().userInput.deleteEntry" (click)="deleteEntry.emit()">
 		<mat-icon>close</mat-icon>
 	</button>
 </mat-card>

src/app/components/userInput/day-input/day-input.spec.ts

@@ -28,4 +28,15 @@ describe('DayInput', () => {
 	it('should create', () => {
 		expect(component).toBeTruthy();
 	});
+
+	it('emits an availability-date change without mutating the input value', () => {
+		const emitted: VacDay[] = [];
+		component.dayChange.subscribe((value) => emitted.push(value));
+		const availableDate = new Date('2025-02-03T00:00:00');
+
+		component.addAvailabilityEvent({ value: availableDate } as never);
+
+		expect(emitted[0].availableDate).toBe(availableDate);
+		expect(mockVacDay.availableDate).toBeUndefined();
+	});
 });

src/app/components/userInput/day-input/day-input.ts

@@ -122,6 +122,11 @@ export class DayInput {
 	}
 
 	addEvent(event: MatDatepickerInputEvent<Date>) {
-		this.dayChange.emit({ ...this.day(), expiryDate: event.value! });
+		if (event.value) this.dayChange.emit({ ...this.day(), expiryDate: event.value });
+	}
+
+	addAvailabilityEvent(event: MatDatepickerInputEvent<Date>) {
+		const value = event.value;
+		if (value) this.dayChange.emit({ ...this.day(), availableDate: value });
 	}
 }

src/app/services/calendar-service.spec.ts

@@ -1,16 +1,7 @@
 import { TestBed } from '@angular/core/testing';
-import { vi } from 'vitest';
 import { provideZonelessChangeDetection } from '@angular/core';
-import {
-	CalendarService,
-	DayType,
-	SelectedDate,
-	SelectedDates,
-	SelectableDayType,
-	VacDay,
-} from './calendar-service';
+import { CalendarService, DayType, SelectedDate, SelectedDates } from './calendar-service';
 import { DateRange } from '@angular/material/datepicker';
-import { IfThenRule, TimeWindowRule, RuleType } from './rule-service';
 
 describe('CalendarService', () => {
 	let service: CalendarService;
@@ -26,6 +17,20 @@ describe('CalendarService', () => {
 		expect(service).toBeTruthy();
 	});
 
+	it('derives the planning horizon from the instant in Europe/Paris', () => {
+		const previousTimeZone = process.env['TZ'];
+		process.env['TZ'] = 'Pacific/Auckland';
+		try {
+			expect(service.getDefaultPlanningHorizon(new Date('2026-08-28T01:00:00Z'))).toEqual({
+				start: '2026-08-28',
+				end: '2027-08-28',
+			});
+		} finally {
+			if (previousTimeZone === undefined) delete process.env['TZ'];
+			else process.env['TZ'] = previousTimeZone;
+		}
+	});
+
 	describe('getHolidays', () => {
 		it('should return an array of holidays', () => {
 			const holidays = service.getHolidays();
@@ -188,14 +193,6 @@ describe('SelectedDates', () => {
 		expect(selectedDates.datesSelected.length).toBeGreaterThan(2);
 	});
 
-	it('should compute heuristics', () => {
-		const selectedDates = new SelectedDates();
-		const date = new Date(2024, 0, 1);
-		selectedDates.push(new SelectedDate(DayType.CP, new DateRange<Date>(date, date)));
-		const heuristic = selectedDates.computeHeuristics();
-		expect(typeof heuristic).toBe('number');
-	});
-
 	it('should return correct classes', () => {
 		const selectedDates = new SelectedDates();
 		const date = new Date(2024, 0, 1);
@@ -211,254 +208,4 @@ describe('SelectedDates', () => {
 		const tooltip = selectedDates.getTooltip(date);
 		expect(tooltip).toBeTruthy();
 	});
-
-	describe('optimizeVacations and rules engine', () => {
-		let calendarService: CalendarService;
-		let selectedDates: SelectedDates;
-
-		beforeEach(() => {
-			calendarService = TestBed.inject(CalendarService);
-			selectedDates = new SelectedDates();
-		});
-
-		it('should execute rules sequentially in order', async () => {
-			const vacationDays: VacDay[] = [];
-			const rules: (TimeWindowRule | IfThenRule)[] = [
-				{ id: '1', type: RuleType.IF_THEN, enabled: true } as IfThenRule,
-				{ id: '2', type: RuleType.TIME_WINDOW, enabled: true } as TimeWindowRule,
-				{ id: '3', type: RuleType.IF_THEN, enabled: true } as IfThenRule,
-			];
-
-			const applyTimeWindowRulesSpy = vi.spyOn(selectedDates, 'applyTimeWindowRules');
-			const applyIfThenRulesSpy = vi.spyOn(selectedDates, 'applyIfThenRules');
-
-			await selectedDates.optimizeVacations(vacationDays, rules, calendarService);
-
-			expect(applyIfThenRulesSpy.mock.calls.length).toBe(2);
-			expect(applyTimeWindowRulesSpy.mock.calls.length).toBe(1);
-
-			// First rule is IF_THEN
-			expect(applyIfThenRulesSpy.mock.calls[0][1][0].id).toBe('1');
-			// Second rule is TIME_WINDOW
-			expect(applyTimeWindowRulesSpy.mock.calls[0][1][0].id).toBe('2');
-			// Third rule is IF_THEN
-			expect(applyIfThenRulesSpy.mock.calls[1][1][0].id).toBe('3');
-		});
-
-		it('should apply time window rules', () => {
-			const futureYear = new Date().getFullYear() + 2;
-			const vacationDays: VacDay[] = [
-				{
-					id: '1',
-					type: SelectableDayType.CP,
-					numberOfDays: 5,
-					expiryDate: new Date(futureYear + 1, 11, 31),
-				},
-			];
-			const rules: TimeWindowRule[] = [
-				{
-					id: 't1',
-					name: 'Time Window',
-					type: RuleType.TIME_WINDOW,
-					enabled: true,
-					startDate: new Date(futureYear, 11, 20),
-					endDate: new Date(futureYear, 11, 25),
-					placeDays: 3,
-					placeType: SelectableDayType.CP,
-				},
-			];
-
-			// Mock monthsInAYearFromNow to return a controlled range of days
-			vi.spyOn(calendarService, 'monthsInAYearFromNow').mockReturnValue([
-				[
-					[
-						new Date(futureYear, 11, 20),
-						new Date(futureYear, 11, 21),
-						new Date(futureYear, 11, 22),
-						new Date(futureYear, 11, 23),
-						new Date(futureYear, 11, 24),
-					],
-				],
-			]);
-
-			selectedDates.applyTimeWindowRules(vacationDays, rules, calendarService);
-
-			// Should have placed 3 days
-			const placedCount = selectedDates._datesSelected.filter(
-				(d) => d.type === DayType.CP,
-			).length;
-			expect(placedCount).toBe(3);
-			// Should have consumed 3 days from the pool
-			expect(vacationDays[0].numberOfDays).toBe(2);
-		});
-
-		it('should apply if-then rules', () => {
-			const futureYear = new Date().getFullYear() + 2;
-			const vacationDays: VacDay[] = [
-				{
-					id: '1',
-					type: SelectableDayType.CP,
-					numberOfDays: 5,
-					expiryDate: new Date(futureYear + 1, 11, 31),
-				},
-			];
-			const rules: IfThenRule[] = [
-				{
-					id: 'i1',
-					name: 'Samedi Malin',
-					type: RuleType.IF_THEN,
-					enabled: true,
-					dayOfWeek: 6, // Saturday
-					placeDays: 2,
-					placeType: SelectableDayType.CP,
-					placement: 'auto',
-					rewardDays: 1,
-					rewardType: SelectableDayType.OTHER,
-				},
-			];
-
-			// Setup a mock holiday on a Saturday
-			// Use a date far in the future so it doesn't fail the "past date" check
-			const saturdayHoliday = new Date(new Date().getFullYear() + 2, 11, 5); // Dec 5 is usually Saturday or close, let's just make sure we get a Saturday
-			// To guarantee it's a Saturday for the test:
-			while (saturdayHoliday.getDay() !== 6) {
-				saturdayHoliday.setDate(saturdayHoliday.getDate() + 1);
-			}
-			selectedDates._datesSelected.push(
-				new SelectedDate(
-					DayType.CLOSED_DAY,
-					new DateRange<Date>(saturdayHoliday, saturdayHoliday),
-				),
-			);
-
-			selectedDates.applyIfThenRules(vacationDays, rules);
-
-			// Should have placed 2 CP days (e.g. Thu/Fri, Mon/Tue, or Fri/Mon)
-			const placedCP = selectedDates._datesSelected.filter(
-				(d) => d.type === DayType.CP,
-			).length;
-			expect(placedCP).toBe(2);
-
-			// Should have consumed 2 CP days
-			expect(vacationDays[0].numberOfDays).toBe(3);
-
-			// Should have added 1 OTHER reward day
-			const rewardDay = vacationDays.find((vd) => vd.type === SelectableDayType.OTHER);
-			expect(rewardDay).toBeDefined();
-			expect(rewardDay?.numberOfDays).toBe(1);
-		});
-
-		it('should apply time window rules with ANY type', () => {
-			const futureYear = new Date().getFullYear() + 2;
-			const vacationDays: VacDay[] = [
-				{
-					id: '1',
-					type: SelectableDayType.CP,
-					numberOfDays: 2,
-					expiryDate: new Date(futureYear, 11, 31),
-				},
-				{
-					id: '2',
-					type: SelectableDayType.RTT,
-					numberOfDays: 2,
-					expiryDate: new Date(futureYear - 1, 11, 31), // Expires earlier
-				},
-			];
-			const rules: TimeWindowRule[] = [
-				{
-					id: 'tw1',
-					name: 'Vacances',
-					type: RuleType.TIME_WINDOW,
-					enabled: true,
-					startDate: new Date(futureYear, 6, 1),
-					endDate: new Date(futureYear, 6, 15),
-					placeDays: 3,
-					placeType: SelectableDayType.ANY,
-				},
-			];
-
-			vi.spyOn(calendarService, 'monthsInAYearFromNow').mockReturnValue([
-				[
-					[
-						new Date(futureYear, 6, 1),
-						new Date(futureYear, 6, 2),
-						new Date(futureYear, 6, 3),
-						new Date(futureYear, 6, 4),
-						new Date(futureYear, 6, 5),
-					],
-				],
-			]);
-
-			selectedDates.applyTimeWindowRules(vacationDays, rules, calendarService);
-
-			// Should have placed 3 days total: 2 RTT (earlier expiry) and 1 CP
-			const placedRTT = selectedDates._datesSelected.filter(
-				(d) => d.type === DayType.RTT,
-			).length;
-			const placedCP = selectedDates._datesSelected.filter(
-				(d) => d.type === DayType.CP,
-			).length;
-			expect(placedRTT).toBe(2);
-			expect(placedCP).toBe(1);
-
-			// Should have consumed 2 RTT and 1 CP
-			expect(vacationDays[0].numberOfDays).toBe(1); // CP remaining
-			expect(vacationDays[1].numberOfDays).toBe(0); // RTT remaining
-		});
-
-		it('should apply if-then rules with ANY type', () => {
-			const futureYear = new Date().getFullYear() + 2;
-			const vacationDays: VacDay[] = [
-				{
-					id: '1',
-					type: SelectableDayType.CP,
-					numberOfDays: 2,
-					expiryDate: new Date(futureYear + 2, 11, 31),
-				},
-				{
-					id: '2',
-					type: SelectableDayType.RTT,
-					numberOfDays: 2,
-					expiryDate: new Date(futureYear + 1, 11, 31), // Expires earlier
-				},
-			];
-			const rules: IfThenRule[] = [
-				{
-					id: 'i1',
-					name: 'Rule',
-					type: RuleType.IF_THEN,
-					enabled: true,
-					dayOfWeek: 6, // Saturday
-					placeDays: 3,
-					placeType: SelectableDayType.ANY,
-					placement: 'auto',
-					rewardDays: 0,
-					rewardType: SelectableDayType.CP,
-				},
-			];
-
-			const saturdayHoliday = new Date(new Date().getFullYear() + 2, 11, 5);
-			while (saturdayHoliday.getDay() !== 6) {
-				saturdayHoliday.setDate(saturdayHoliday.getDate() + 1);
-			}
-			selectedDates._datesSelected.push(
-				new SelectedDate(
-					DayType.CLOSED_DAY,
-					new DateRange<Date>(saturdayHoliday, saturdayHoliday),
-				),
-			);
-
-			selectedDates.applyIfThenRules(vacationDays, rules);
-
-			// Should have placed 3 days total: 2 RTT (earlier expiry) and 1 CP
-			const placedRTT = selectedDates._datesSelected.filter(
-				(d) => d.type === DayType.RTT,
-			).length;
-			const placedCP = selectedDates._datesSelected.filter(
-				(d) => d.type === DayType.CP,
-			).length;
-			expect(placedRTT).toBe(2);
-			expect(placedCP).toBe(1);
-		});
-	});
 });

src/app/services/calendar-service.ts

@@ -5,7 +5,14 @@ import dayjs from 'dayjs';
 import weekOfYear from 'dayjs/plugin/weekOfYear';
 import isoWeek from 'dayjs/plugin/isoWeek';
 import { DateCacheService } from './date-cache.service';
-import { VacationRule, RuleType, IfThenRule, TimeWindowRule } from './rule-service';
+import {
+	planLeave as planLeaveOperation,
+	LeaveType,
+	PlanOutcome,
+	PlanningReason,
+	RemainingClassification,
+} from './leave-planner.service';
+import { addPlanningYears, planningDateInParis } from './planning-date';
 
 dayjs.extend(weekOfYear);
 dayjs.extend(isoWeek);
@@ -22,6 +29,29 @@ const allTypesOptions: HolidaysTypes.Options = {
 export class CalendarService {
 	private dateCache = inject(DateCacheService);
 
+	readonly planLeave = planLeaveOperation;
+
+	getDefaultPlanningHorizon(now = new Date()): { start: string; end: string } {
+		const start = planningDateInParis(now);
+		return { start, end: addPlanningYears(start, 1) };
+	}
+
+	selectedDatesForPlan(plan: PlanOutcome): SelectedDates {
+		const selected = this.getSelectedDatesForYear();
+		for (const placement of plan.placements) {
+			selected.push(
+				new SelectedDate(
+					dayTypeForLeaveType[placement.type],
+					new DateRange<Date>(
+						new Date(`${placement.date}T00:00:00`),
+						new Date(`${placement.date}T00:00:00`),
+					),
+				),
+			);
+		}
+		return selected;
+	}
+
 	// Cache for holiday timestamps
 	private holidayTimestampsCache: Set<number> | null = null;
 	private holidayCacheYear: number | null = null;
@@ -111,10 +141,17 @@ export class CalendarService {
 
 		// Logic to return holidays for the given year
 		const hd = new Holidays('FR', allTypesOptions);
-		const holidays = hd.getHolidays(currentYear, lang);
-		const holidaysPlusOne = hd.getHolidays(currentYear + 1, lang);
+		const holidays = hd
+			.getHolidays(currentYear, lang)
+			.filter((holiday) => holiday.type === 'public');
+		const holidaysPlusOne = hd
+			.getHolidays(currentYear + 1, lang)
+			.filter((holiday) => holiday.type === 'public');
 		holidays.push(...holidaysPlusOne);
-		const holidaysDate: Date[] = holidays.map((holiday) => new Date(holiday.date));
+		const holidaysDate: Date[] = holidays.map((holiday) => {
+			const dateOnly = String(holiday.date).match(/^\d{4}-\d{2}-\d{2}/)?.[0];
+			return dateOnly ? new Date(`${dateOnly}T00:00:00`) : new Date(holiday.date);
+		});
 
 		// Update cache
 		this.holidayTimestampsCache = new Set(holidaysDate.map((d) => d.getTime()));
@@ -188,7 +225,11 @@ export type VacDay = {
 	id: string;
 	type: SelectableDayType;
 	numberOfDays: number;
+	/** Legacy balances omit this value; the planner then uses the horizon start. */
+	availableDate?: Date;
 	expiryDate: Date;
+	classification?: RemainingClassification;
+	reason?: PlanningReason;
 };
 
 export type Week = (Date | null)[];
@@ -211,6 +252,12 @@ export enum SelectableDayType {
 	ANY = 'any',
 }
 
+const dayTypeForLeaveType: Record<LeaveType, DayType> = {
+	cp: DayType.CP,
+	rtt: DayType.RTT,
+	other: DayType.OTHER,
+};
+
 export const tooltipTypeMapping: { [key in DayType | SelectableDayType]: string } = {
 	[DayType.WEEKEND]: 'Weekend',
 	[DayType.CLOSED_DAY]: 'Jour Férié',
@@ -305,10 +352,6 @@ export class SelectedDates implements SelectedDateInterface {
 	private minDate: Date | null = null;
 	private maxDate: Date | null = null;
 
-	// Constant to indicate no valid strategy was found
-	private static readonly NO_VALID_STRATEGY_HEURISTIC = -1;
-	private static readonly MAX_DAYS_WITH_SAME_HEURISTIC = 9;
-
 	update(): void {
 		this.datesSelected = this._datesSelected.slice();
 		this.grouping();
@@ -470,565 +513,4 @@ export class SelectedDates implements SelectedDateInterface {
 			.filter((tooltip) => tooltip)
 			.join(' + ');
 	}
-
-	computeHeuristics(): number {
-		if (this.datesSelected.length === 0) {
-			return 0;
-		}
-
-		let totalScore = 0;
-
-		// Sort all dates by start date to find next closest dates
-		const sorted = [...this.datesSelected]
-			.filter((date) => date.type !== null)
-			.sort((a, b) => {
-				const aStart = a.range.start?.getTime() ?? 0;
-				const bStart = b.range.start?.getTime() ?? 0;
-				return aStart - bStart;
-			});
-
-		// PRIMARY: Optimize adjacency - reduce "little holes" between vacation periods
-		for (let i = 0; i < sorted.length - 1; i++) {
-			const current = sorted[i];
-			const next = sorted[i + 1];
-
-			// Get dates as UTC strings to remove timezone issues (handles DST properly)
-			const currentEndDate = new Date(current.range.end ?? new Date());
-			const nextStartDate = new Date(next.range.start ?? new Date());
-
-			// Convert to date-only strings (YYYY-MM-DD) to compare calendar days
-			const currentEndString = currentEndDate.toISOString().split('T')[0];
-			const nextStartString = nextStartDate.toISOString().split('T')[0];
-
-			// Parse back to dates at UTC midnight
-			const currentEndDateNormalized = new Date(currentEndString + 'T00:00:00Z');
-			const nextStartDateNormalized = new Date(nextStartString + 'T00:00:00Z');
-
-			const currentEndTime = currentEndDateNormalized.getTime();
-			const nextStartTime = nextStartDateNormalized.getTime();
-
-			const oneDayInMs = 24 * 60 * 60 * 1000;
-
-			// Check if adjacent (next day) - this is the best case!
-			if (nextStartTime - currentEndTime === oneDayInMs) {
-				totalScore += 15; // 50% increased bonus for adjacency; adjacency is highly valued in the scoring system
-			} else if (nextStartTime > currentEndTime) {
-				// Penalty based on days between the two dates
-				const daysBetween = Math.floor((nextStartTime - currentEndTime) / oneDayInMs) - 1;
-				// Ensure daysBetween is non-negative before taking sqrt
-				totalScore -= Math.sqrt(Math.max(0, daysBetween));
-			}
-		}
-
-		// SECONDARY: Penalize uneven monthly distribution to encourage spread
-		const monthCounts = new Map<number, number>(); // Use year*12+month as key to avoid strings
-		for (const selectedDate of this.datesSelected) {
-			if (!selectedDate.range.start || !selectedDate.range.end) continue;
-
-			// Count days in this selected date range
-			const daysInRange = selectedDate.getLengthInDays();
-
-			// For each day in the range, add it to the appropriate month
-			const currentDate = new Date(selectedDate.range.start);
-			for (let i = 0; i < daysInRange; i++) {
-				const monthKey = currentDate.getFullYear() * 12 + currentDate.getMonth();
-				monthCounts.set(monthKey, (monthCounts.get(monthKey) ?? 0) + 1);
-				currentDate.setDate(currentDate.getDate() + 1);
-			}
-		}
-
-		// Apply small penalty for uneven distribution (secondary priority)
-		for (const count of monthCounts.values()) {
-			totalScore -= count; // Smaller penalty than gap filling
-		}
-
-		return totalScore;
-	}
-
-	async optimizeVacations(
-		vacationDays: VacDay[],
-		rules: VacationRule[],
-		calendarService: CalendarService,
-		progressCallback?: (progress: number) => void,
-	): Promise<VacDay[]> {
-		// Calculate total days to process
-		const totalDays = vacationDays.reduce((sum, vd) => sum + vd.numberOfDays, 0);
-		let processedDays = 0;
-
-		// Execute custom rules sequentially in the exact order they appear in the list
-		for (const rule of rules) {
-			if (!rule.enabled) continue;
-
-			if (rule.type === RuleType.TIME_WINDOW) {
-				this.applyTimeWindowRules(vacationDays, [rule as TimeWindowRule], calendarService);
-			} else if (rule.type === RuleType.IF_THEN) {
-				this.applyIfThenRules(vacationDays, [rule as IfThenRule]);
-			}
-		}
-
-		// Helper function to update progress, throttled to every 5%
-		let lastReportedProgress = 0;
-		const PROGRESS_STEP = 5; // percent
-		const updateProgress = async () => {
-			if (progressCallback && totalDays > 0) {
-				const progress = Math.round((processedDays / totalDays) * 100);
-				if (progress - lastReportedProgress >= PROGRESS_STEP || progress === 100) {
-					progressCallback(progress);
-					lastReportedProgress = progress;
-					// Allow UI to update with a microtask
-					await new Promise((resolve) => setTimeout(resolve, 0));
-				}
-			}
-		};
-
-		await updateProgress();
-
-		// Track VacDays that can't find valid placements
-		const exhaustedVacDayIds = new Set<string>();
-
-		// Process vacation days ordered by expiration date (earliest first)
-		while (vacationDays.some((vd) => vd.numberOfDays > 0 && !exhaustedVacDayIds.has(vd.id))) {
-			// Sort by expiration date to use days that expire first, excluding exhausted ones
-			const sortedVacDays = [...vacationDays]
-				.filter((vd) => vd.numberOfDays > 0 && !exhaustedVacDayIds.has(vd.id))
-				.sort((a, b) => a.expiryDate.getTime() - b.expiryDate.getTime());
-
-			if (sortedVacDays.length === 0) {
-				break;
-			}
-
-			const vacDayToUse = sortedVacDays[0];
-			const result = this.lookForVacation(vacDayToUse, calendarService);
-
-			if (result.heuristic === SelectedDates.NO_VALID_STRATEGY_HEURISTIC) {
-				// Mark this VacDay as exhausted and try other vacation days
-				exhaustedVacDayIds.add(vacDayToUse.id);
-				continue;
-			}
-
-			vacDayToUse.numberOfDays -= 1;
-			processedDays++;
-			await updateProgress();
-		}
-
-		// Final progress update (100%)
-		if (progressCallback) {
-			progressCallback(100);
-		}
-
-		// Inform user if not all days were placed
-		const remainingDays = vacationDays.reduce((sum, vd) => sum + vd.numberOfDays, 0);
-		if (remainingDays > 0) {
-			console.warn(
-				`Optimization stopped: ${remainingDays} of ${totalDays} vacation days remain unplaced. ` +
-					`Too many days have equivalent placement quality - please place remaining days manually.`,
-			);
-		}
-
-		return vacationDays;
-	}
-
-	applyTimeWindowRules(
-		vacationDays: VacDay[],
-		rules: TimeWindowRule[],
-		calendarService: CalendarService,
-	): void {
-		for (const rule of rules) {
-			let daysToPlace = rule.placeDays;
-
-			const consumeDays = (count: number): boolean => {
-				let needed = count;
-				const availableDays = vacationDays
-					.filter(
-						(vd) =>
-							(rule.placeType === SelectableDayType.ANY ||
-								vd.type === rule.placeType) &&
-							vd.numberOfDays > 0,
-					)
-					.sort((a, b) => a.expiryDate.getTime() - b.expiryDate.getTime());
-
-				for (const vd of availableDays) {
-					if (needed === 0) break;
-					const take = Math.min(vd.numberOfDays, needed);
-					vd.numberOfDays -= take;
-					needed -= take;
-				}
-				return needed === 0;
-			};
-
-			const totalAvailable = vacationDays
-				.filter(
-					(vd) => rule.placeType === SelectableDayType.ANY || vd.type === rule.placeType,
-				)
-				.reduce((sum, vd) => sum + vd.numberOfDays, 0);
-
-			if (totalAvailable < daysToPlace) {
-				console.warn(
-					`Insufficient ${rule.placeType} days for Time Window Rule "${rule.name}". Needs ${daysToPlace}, has ${totalAvailable}. Placing ${totalAvailable} days instead.`,
-				);
-				daysToPlace = totalAvailable;
-			}
-
-			if (daysToPlace <= 0) continue;
-
-			const getNextAvailableType = (): DayType => {
-				const sorted = vacationDays
-					.filter(
-						(vd) =>
-							(rule.placeType === SelectableDayType.ANY ||
-								vd.type === rule.placeType) &&
-							vd.numberOfDays > 0,
-					)
-					.sort((a, b) => a.expiryDate.getTime() - b.expiryDate.getTime());
-				return sorted.length > 0
-					? (sorted[0].type as unknown as DayType)
-					: ((rule.placeType === SelectableDayType.ANY
-							? SelectableDayType.CP
-							: rule.placeType) as unknown as DayType);
-			};
-
-			const candidates: Date[] = [];
-			const daysOfYear = calendarService.monthsInAYearFromNow();
-			const start = new Date(rule.startDate).getTime();
-			const end = new Date(rule.endDate).getTime();
-
-			for (const month of daysOfYear) {
-				for (const week of month) {
-					for (const day of week) {
-						if (day) {
-							const dayTime = day.getTime();
-							if (dayTime >= start && dayTime <= end && !this.isSelected(day)) {
-								candidates.push(day);
-							}
-						}
-					}
-				}
-			}
-
-			for (let i = 0; i < daysToPlace; i++) {
-				if (candidates.length === 0) break;
-
-				const currentPlaceType = getNextAvailableType();
-				let bestCandidate: Date | null = null;
-				let bestHeuristic = -Infinity;
-				let bestCandidateIndex = -1;
-
-				for (let j = 0; j < candidates.length; j++) {
-					const day = candidates[j];
-					if (this.isSelected(day)) continue;
-
-					const tempDatesBackup = [...this._datesSelected];
-					this._datesSelected.push(
-						new SelectedDate(currentPlaceType, new DateRange<Date>(day, day)),
-					);
-					this.datesSelected = this._datesSelected.slice();
-					this.grouping();
-
-					const heuristic = this.computeHeuristics();
-
-					this._datesSelected = [...tempDatesBackup];
-					this.datesSelected = this._datesSelected.slice();
-					this.grouping();
-
-					if (heuristic > bestHeuristic) {
-						bestHeuristic = heuristic;
-						bestCandidate = day;
-						bestCandidateIndex = j;
-					}
-				}
-
-				if (bestCandidate) {
-					this.push(
-						new SelectedDate(
-							currentPlaceType,
-							new DateRange<Date>(bestCandidate, bestCandidate),
-						),
-					);
-					consumeDays(1);
-					candidates.splice(bestCandidateIndex, 1);
-				}
-			}
-		}
-	}
-
-	applyIfThenRules(vacationDays: VacDay[], rules: IfThenRule[]): void {
-		const nowTime = new Date().setHours(0, 0, 0, 0);
-
-		const consumeDays = (count: number, type: SelectableDayType, useByDate: Date): boolean => {
-			let daysToConsume = count;
-			const useByTime = useByDate.getTime();
-			const availableDays = vacationDays
-				.filter(
-					(vd) =>
-						(type === SelectableDayType.ANY || vd.type === type) &&
-						vd.numberOfDays > 0 &&
-						vd.expiryDate.getTime() >= useByTime,
-				)
-				.sort((a, b) => a.expiryDate.getTime() - b.expiryDate.getTime());
-
-			for (const vd of availableDays) {
-				if (daysToConsume === 0) break;
-				const take = Math.min(vd.numberOfDays, daysToConsume);
-				vd.numberOfDays -= take;
-				daysToConsume -= take;
-			}
-			return daysToConsume === 0;
-		};
-
-		const checkAvailableDays = (
-			count: number,
-			type: SelectableDayType,
-			useByDate: Date,
-		): boolean => {
-			const useByTime = useByDate.getTime();
-			const total = vacationDays
-				.filter(
-					(vd) =>
-						(type === SelectableDayType.ANY || vd.type === type) &&
-						vd.expiryDate.getTime() >= useByTime,
-				)
-				.reduce((sum, vd) => sum + vd.numberOfDays, 0);
-			return total >= count;
-		};
-
-		const addRewardDays = (count: number, type: SelectableDayType): void => {
-			if (count <= 0) return;
-			const existing = vacationDays.find((vd) => vd.type === type);
-			if (existing) {
-				existing.numberOfDays += count;
-			} else {
-				vacationDays.push({
-					id: crypto.randomUUID(),
-					type: type,
-					numberOfDays: count,
-					expiryDate: new Date(new Date().getFullYear() + 10, 11, 31),
-				});
-			}
-		};
-
-		const getWorkingDays = (startDate: Date, direction: 1 | -1, count: number): Date[] => {
-			const result: Date[] = [];
-			const current = new Date(startDate);
-			while (result.length < count) {
-				current.setDate(current.getDate() + direction);
-				const isWeekend = current.getDay() === 0 || current.getDay() === 6;
-				const isHoliday = this._datesSelected.some(
-					(d) =>
-						d.type === DayType.CLOSED_DAY &&
-						d.range.start?.getTime() === current.getTime(),
-				);
-				if (!isWeekend && !isHoliday) {
-					result.push(new Date(current));
-				}
-			}
-			return result;
-		};
-
-		for (const rule of rules) {
-			const matchingHolidays = this._datesSelected.filter(
-				(date) =>
-					date.type === DayType.CLOSED_DAY &&
-					date.range.start?.getDay() === rule.dayOfWeek,
-			);
-
-			for (const holiday of matchingHolidays) {
-				if (!holiday.range.start) continue;
-				const holidayDate = new Date(holiday.range.start);
-
-				const N = rule.placeDays;
-				if (N <= 0) continue;
-
-				const placementOptions: Date[][] = [];
-
-				if (rule.placement === 'before' || rule.placement === 'auto') {
-					placementOptions.push(getWorkingDays(holidayDate, -1, N));
-				}
-				if (rule.placement === 'after' || rule.placement === 'auto') {
-					placementOptions.push(getWorkingDays(holidayDate, 1, N));
-				}
-				if (rule.placement === 'around' || rule.placement === 'auto') {
-					const beforeCount = Math.ceil(N / 2);
-					const afterCount = Math.floor(N / 2);
-					const aroundDates = [
-						...getWorkingDays(holidayDate, -1, beforeCount),
-						...getWorkingDays(holidayDate, 1, afterCount),
-					];
-					placementOptions.push(aroundDates);
-				}
-
-				const strategies: { apply: () => void; heuristic: number }[] = [];
-				const tempDatesBackup = [...this._datesSelected];
-
-				for (const dates of placementOptions) {
-					const allValid = dates.every(
-						(d) => d.getTime() >= nowTime && !this.isSelected(d),
-					);
-					if (!allValid) continue;
-
-					const maxDate = new Date(Math.max(...dates.map((d) => d.getTime())));
-					if (!checkAvailableDays(N, rule.placeType, maxDate)) continue;
-
-					const simulatedDays = vacationDays.map((vd) => ({ ...vd }));
-					const datesWithTypes: { date: Date; type: DayType }[] = [];
-					for (const d of dates) {
-						const sorted = simulatedDays
-							.filter(
-								(vd) =>
-									(rule.placeType === SelectableDayType.ANY ||
-										vd.type === rule.placeType) &&
-									vd.numberOfDays > 0 &&
-									vd.expiryDate.getTime() >= maxDate.getTime(),
-							)
-							.sort((a, b) => a.expiryDate.getTime() - b.expiryDate.getTime());
-
-						let chosenType = (rule.placeType === SelectableDayType.ANY
-							? SelectableDayType.CP
-							: rule.placeType) as unknown as DayType;
-						if (sorted.length > 0) {
-							sorted[0].numberOfDays--;
-							chosenType = sorted[0].type as unknown as DayType;
-						}
-						datesWithTypes.push({ date: d, type: chosenType });
-					}
-
-					for (const dt of datesWithTypes) {
-						this.push(new SelectedDate(dt.type, new DateRange<Date>(dt.date, dt.date)));
-					}
-					const heuristic = this.computeHeuristics();
-
-					strategies.push({
-						apply: () => {
-							this._datesSelected = [...tempDatesBackup];
-							for (const dt of datesWithTypes) {
-								this.push(
-									new SelectedDate(
-										dt.type,
-										new DateRange<Date>(dt.date, dt.date),
-									),
-								);
-							}
-							consumeDays(N, rule.placeType, maxDate);
-							addRewardDays(rule.rewardDays, rule.rewardType);
-						},
-						heuristic: heuristic,
-					});
-
-					this._datesSelected = [...tempDatesBackup];
-					this.datesSelected = this._datesSelected.slice();
-					this.grouping();
-				}
-
-				if (strategies.length > 0) {
-					const bestStrategy = strategies.reduce((best, current) =>
-						current.heuristic > best.heuristic ? current : best,
-					);
-					bestStrategy.apply();
-				} else {
-					console.warn(
-						`Could not apply If-Then Rule "${rule.name}" for holiday on ${holidayDate.toLocaleDateString()}. Candidates invalid or insufficient days.`,
-					);
-				}
-			}
-		}
-	}
-
-	lookForVacation(
-		vacDay: VacDay,
-		calendarService: CalendarService,
-	): { apply: () => void; heuristic: number } {
-		const daysOfYear = calendarService.monthsInAYearFromNow();
-		const now = new Date();
-		now.setHours(0, 0, 0, 0);
-		const nowTime = now.getTime();
-		const expiryTime = vacDay.expiryDate.getTime();
-
-		// Preprocess: filter out past days, already selected days, and days after expiry date
-		const candidateDays: Date[] = [];
-		for (const month of daysOfYear) {
-			for (const week of month) {
-				for (const day of week) {
-					if (day) {
-						day.setHours(0, 0, 0, 0);
-						const dayTime = day.getTime();
-						if (dayTime >= nowTime && dayTime <= expiryTime && !this.isSelected(day)) {
-							candidateDays.push(day);
-						}
-					}
-				}
-			}
-		}
-
-		// Early exit if no candidates
-		if (candidateDays.length === 0) {
-			return { apply: () => {}, heuristic: SelectedDates.NO_VALID_STRATEGY_HEURISTIC };
-		}
-
-		const vacType = vacDay.type as unknown as DayType;
-		const tempDatesBackup = [...this._datesSelected];
-		let bestStrategy: { apply: () => void; heuristic: number; value: Date } | null = null;
-		let bestHeuristic = -Infinity;
-		let daysWithBestHeuristic = 0;
-
-		// Evaluate each candidate day
-		for (const day of candidateDays) {
-			// Reset to backup state
-			this._datesSelected = [...tempDatesBackup];
-			this.datesSelected = this._datesSelected.slice();
-			this.grouping();
-
-			// Mark this day as vacation (reuse the day object since it's already normalized)
-			this.datesSelected.push(new SelectedDate(vacType, new DateRange<Date>(day, day)));
-
-			const heuristic = this.computeHeuristics();
-
-			// Track only if better than current best
-			if (heuristic > bestHeuristic) {
-				bestHeuristic = heuristic;
-				daysWithBestHeuristic = 1;
-				const capturedDay = day;
-				bestStrategy = {
-					apply: () => {
-						this._datesSelected = [...tempDatesBackup];
-						this.push(
-							new SelectedDate(
-								vacType,
-								new DateRange<Date>(capturedDay, capturedDay),
-							),
-						);
-					},
-					heuristic: heuristic,
-					value: capturedDay,
-				};
-			} else if (heuristic === bestHeuristic) {
-				daysWithBestHeuristic++;
-			}
-		}
-
-		// Check if too many days have the same best heuristic after evaluating all days
-		if (daysWithBestHeuristic > SelectedDates.MAX_DAYS_WITH_SAME_HEURISTIC) {
-			// Restore backup before stopping
-			this._datesSelected = [...tempDatesBackup];
-			this.datesSelected = this._datesSelected.slice();
-			this.grouping();
-
-			// Stop optimization - let user decide manually
-			return {
-				apply: () => {},
-				heuristic: SelectedDates.NO_VALID_STRATEGY_HEURISTIC,
-			};
-		}
-
-		// Restore backup before returning
-		this._datesSelected = [...tempDatesBackup];
-		this.datesSelected = this._datesSelected.slice();
-		this.grouping();
-
-		// Apply best strategy if found
-		if (bestStrategy) {
-			bestStrategy.apply();
-			return bestStrategy;
-		}
-
-		return { apply: () => {}, heuristic: SelectedDates.NO_VALID_STRATEGY_HEURISTIC };
-	}
 }

src/app/services/leave-planner.service.ts

@@ -0,0 +1,288 @@
+import type {
+	InvalidInputOutcome,
+	PlanOutcome,
+	PlanningIncompleteOutcome,
+	PlanningOutcome,
+	PlanningRequest,
+} from './leave-planner.core';
+
+export type {
+	IfThenPlanningRule,
+	InvalidInputOutcome,
+	LeaveBalanceInput,
+	LeavePlacement,
+	LeaveSelector,
+	LeaveType,
+	PlanOutcome,
+	PlacementMode,
+	PlanningConflictOutcome,
+	PlanningDate,
+	PlanningHorizon,
+	PlanningIncompleteOutcome,
+	PlanningMetrics,
+	PlanningOutcome,
+	PlanningReason,
+	PlanningRequest,
+	PlanningRule,
+	PreferenceResult,
+	RemainingBalance,
+	RemainingClassification,
+	RuleForce,
+	TimeOffPeriod,
+	TimeWindowPlanningRule,
+} from './leave-planner.core';
+
+const MAX_PLANNING_MS = 10_000;
+
+interface UntrustedRecord {
+	horizon?: unknown;
+	start?: unknown;
+	end?: unknown;
+	balances?: unknown;
+	rules?: unknown;
+	deadlineMs?: unknown;
+	progress?: unknown;
+	id?: unknown;
+	name?: unknown;
+	type?: unknown;
+	quantity?: unknown;
+	availableFrom?: unknown;
+	expiryDate?: unknown;
+	enabled?: unknown;
+	force?: unknown;
+	startDate?: unknown;
+	endDate?: unknown;
+	placeDays?: unknown;
+	placeType?: unknown;
+	dayOfWeek?: unknown;
+	placement?: unknown;
+	rewardDays?: unknown;
+	rewardType?: unknown;
+}
+
+interface PlanningSnapshot {
+	horizon?: { start?: unknown; end?: unknown };
+	balances?: unknown;
+	rules?: unknown;
+	deadlineMs?: unknown;
+	progress?: unknown;
+}
+
+function asRecord(value: unknown): UntrustedRecord | undefined {
+	return typeof value === 'object' && value !== null ? (value as UntrustedRecord) : undefined;
+}
+
+function copyDate(value: unknown): unknown {
+	return value instanceof Date ? new Date(value.getTime()) : value;
+}
+
+function snapshotRequest(request: unknown): PlanningSnapshot {
+	const source = asRecord(request) ?? {};
+	const horizon = asRecord(source.horizon);
+	const balances = Array.isArray(source.balances)
+		? source.balances.map((balance) => {
+				const value = asRecord(balance);
+				return {
+					id: value?.id,
+					type: value?.type,
+					quantity: value?.quantity,
+					availableFrom:
+						value?.availableFrom === undefined
+							? undefined
+							: copyDate(value.availableFrom),
+					expiryDate: copyDate(value?.expiryDate),
+				};
+			})
+		: source.balances;
+	const rules = Array.isArray(source.rules)
+		? source.rules.map((rule) => {
+				const value = asRecord(rule);
+				const base = {
+					id: value?.id,
+					name: value?.name,
+					type: value?.type,
+					enabled: value?.enabled,
+					force: value?.force,
+				};
+				if (typeof value?.type === 'string' && value.type.toLowerCase() === 'time_window') {
+					return {
+						...base,
+						startDate: copyDate(value.startDate),
+						endDate: copyDate(value.endDate),
+						placeDays: value.placeDays,
+						placeType: value.placeType,
+					};
+				}
+				return {
+					...base,
+					dayOfWeek: value?.dayOfWeek,
+					placeDays: value?.placeDays,
+					placeType: value?.placeType,
+					placement: value?.placement,
+					rewardDays: value?.rewardDays,
+					rewardType: value?.rewardType,
+				};
+			})
+		: source.rules;
+	return {
+		horizon: horizon
+			? {
+					start: copyDate(horizon.start),
+					end: copyDate(horizon.end),
+				}
+			: undefined,
+		balances,
+		rules,
+		deadlineMs: source.deadlineMs,
+		progress: typeof source.progress === 'function' ? source.progress : undefined,
+	};
+}
+
+function deadlineFor(request: PlanningSnapshot): number {
+	const configured = typeof request.deadlineMs === 'number' ? request.deadlineMs : undefined;
+	return Math.min(Math.max(0, configured ?? MAX_PLANNING_MS), MAX_PLANNING_MS);
+}
+
+function invalidDeadline(request: PlanningSnapshot): InvalidInputOutcome | undefined {
+	const deadline = request.deadlineMs;
+	if (
+		deadline !== undefined &&
+		(typeof deadline !== 'number' || !Number.isFinite(deadline) || deadline < 0)
+	)
+		return {
+			kind: 'InvalidInput',
+			reasons: [
+				{
+					code: 'deadline',
+					message: 'The planning deadline must be a finite non-negative number.',
+				},
+			],
+		};
+	return undefined;
+}
+
+type PlannerWorkerResponse =
+	| { type: 'progress'; stage: string }
+	| { type: 'checkpoint'; plan: PlanOutcome }
+	| { type: 'result'; outcome: PlanningOutcome }
+	| { type: 'error'; message: string };
+
+function interruptedOutcome(
+	checkpoint: PlanOutcome | undefined,
+	deadline: number,
+	reasonCode = 'deadline',
+	message = `Planning stopped after ${deadline}ms before all quality stages completed.`,
+): PlanningIncompleteOutcome {
+	return {
+		kind: 'PlanningIncomplete',
+		incumbent: checkpoint,
+		completedStages: checkpoint?.completedStages ?? [],
+		lastCompletedStage: checkpoint?.lastCompletedStage,
+		reasons: [{ code: reasonCode, message }],
+	};
+}
+
+function planInWorker(snapshot: PlanningSnapshot, deadline: number): Promise<PlanningOutcome> {
+	return new Promise((resolve) => {
+		let worker: Worker;
+		try {
+			worker = new Worker(new URL('./leave-planner.worker', import.meta.url), {
+				type: 'module',
+			});
+		} catch {
+			resolve(
+				interruptedOutcome(
+					undefined,
+					deadline,
+					'worker-unavailable',
+					'Planning could not start because isolated execution is unavailable.',
+				),
+			);
+			return;
+		}
+
+		let settled = false;
+		let checkpoint: PlanOutcome | undefined;
+		const finish = (outcome: PlanningOutcome) => {
+			if (settled) return;
+			settled = true;
+			clearTimeout(timeout);
+			worker.onmessage = null;
+			worker.onerror = null;
+			worker.terminate();
+			resolve(outcome);
+		};
+		const timeout = setTimeout(
+			() => finish(interruptedOutcome(checkpoint, deadline)),
+			Math.max(0, deadline - 1),
+		);
+
+		worker.onmessage = (event: MessageEvent<PlannerWorkerResponse>) => {
+			const message = event.data;
+			if (!message) return;
+			if (message.type === 'progress') {
+				if (typeof snapshot.progress === 'function') snapshot.progress(message.stage);
+				return;
+			}
+			if (message.type === 'checkpoint') {
+				checkpoint = message.plan;
+				return;
+			}
+			if (message.type === 'result') {
+				finish(message.outcome);
+				return;
+			}
+			finish(interruptedOutcome(checkpoint, deadline, 'worker-error', message.message));
+		};
+		worker.onerror = () =>
+			finish(
+				interruptedOutcome(
+					checkpoint,
+					deadline,
+					'worker-error',
+					'Planning worker failed before returning an outcome.',
+				),
+			);
+		try {
+			worker.postMessage({
+				type: 'plan',
+				request: { ...snapshot, deadlineMs: deadline, progress: undefined },
+			});
+		} catch {
+			finish(
+				interruptedOutcome(
+					checkpoint,
+					deadline,
+					'worker-error',
+					'Planning input could not be sent to the isolated worker.',
+				),
+			);
+		}
+	});
+}
+
+export async function planLeave(request: PlanningRequest): Promise<PlanningOutcome> {
+	const snapshot = snapshotRequest(request);
+	const deadlineError = invalidDeadline(snapshot);
+	if (deadlineError) {
+		await new Promise<void>((resolve) => setTimeout(resolve, 0));
+		return deadlineError;
+	}
+	const deadline = deadlineFor(snapshot);
+	if (typeof window !== 'undefined') {
+		if (typeof Worker !== 'undefined') return planInWorker(snapshot, deadline);
+		await new Promise<void>((resolve) => setTimeout(resolve, 0));
+		const core = await import('./leave-planner.core');
+		const validation = core.invalidInputFor(snapshot);
+		if (validation) return validation;
+		return interruptedOutcome(
+			undefined,
+			deadline,
+			'worker-unavailable',
+			'Planning could not start because isolated execution is unavailable.',
+		);
+	}
+	await new Promise<void>((resolve) => setTimeout(resolve, 0));
+	const core = await import('./leave-planner.core');
+	return core.calculatePlanningInternal(snapshot);
+}

src/app/services/leave-planner.worker.ts

@@ -0,0 +1,45 @@
+/// <reference lib="webworker" />
+
+import type { PlanningOutcome, PlanOutcome } from './leave-planner.service';
+import { calculatePlanningInternal } from './leave-planner.core';
+
+type WorkerPlanningRequest = {
+	horizon?: { start?: unknown; end?: unknown };
+	balances?: unknown;
+	rules?: unknown;
+	deadlineMs?: unknown;
+	progress?: unknown;
+};
+
+type WorkerRequest = {
+	type: 'plan';
+	request: WorkerPlanningRequest;
+};
+
+type WorkerResponse =
+	| { type: 'progress'; stage: string }
+	| { type: 'checkpoint'; plan: PlanOutcome }
+	| { type: 'result'; outcome: PlanningOutcome }
+	| { type: 'error'; message: string };
+
+const worker = self as DedicatedWorkerGlobalScope;
+
+worker.onmessage = (event: MessageEvent<WorkerRequest>) => {
+	if (event.data?.type !== 'plan') return;
+	try {
+		const outcome = calculatePlanningInternal(
+			{
+				...event.data.request,
+				progress: (stage: string) =>
+					worker.postMessage({ type: 'progress', stage } satisfies WorkerResponse),
+			},
+			(plan) => worker.postMessage({ type: 'checkpoint', plan } satisfies WorkerResponse),
+		);
+		worker.postMessage({ type: 'result', outcome } satisfies WorkerResponse);
+	} catch (error) {
+		worker.postMessage({
+			type: 'error',
+			message: error instanceof Error ? error.message : String(error),
+		} satisfies WorkerResponse);
+	}
+};

src/app/services/planning-date.ts

@@ -0,0 +1,18 @@
+export function planningDateInParis(value: Date): string {
+	const parts = new Intl.DateTimeFormat('en-GB', {
+		timeZone: 'Europe/Paris',
+		year: 'numeric',
+		month: '2-digit',
+		day: '2-digit',
+	}).formatToParts(value);
+	const get = (type: string) => parts.find((part) => part.type === type)?.value ?? '';
+	return `${get('year')}-${get('month')}-${get('day')}`;
+}
+
+export function addPlanningYears(key: string, years: number): string {
+	const date = new Date(`${key}T00:00:00Z`);
+	const month = date.getUTCMonth();
+	date.setUTCFullYear(date.getUTCFullYear() + years);
+	if (date.getUTCMonth() !== month) date.setUTCDate(0);
+	return date.toISOString().slice(0, 10);
+}

src/app/services/rule-service.spec.ts

@@ -31,6 +31,43 @@ describe('RuleService', () => {
 		expect(christmasRule.endDate instanceof Date).toBe(true);
 	});
 
+	it('migrates legacy force values without changing rule order or dates', () => {
+		TestBed.resetTestingModule();
+		localStorage.setItem(
+			'vacationRules',
+			JSON.stringify([
+				{
+					id: 'legacy-first',
+					name: 'First',
+					type: RuleType.TIME_WINDOW,
+					enabled: true,
+					startDate: '2024-02-01',
+					endDate: '2024-02-05',
+					placeDays: 1,
+					placeType: SelectableDayType.CP,
+				},
+				{
+					id: 'legacy-second',
+					name: 'Second',
+					type: RuleType.TIME_WINDOW,
+					enabled: true,
+					force: 'obligation',
+					startDate: '2024-03-01',
+					endDate: '2024-03-02',
+					placeDays: 1,
+					placeType: SelectableDayType.RTT,
+				},
+			]),
+		);
+		TestBed.configureTestingModule({});
+		service = TestBed.inject(RuleService);
+
+		expect(service.rules.map((rule) => rule.id)).toEqual(['legacy-first', 'legacy-second']);
+		expect(service.rules[0].force).toBe('preference');
+		const first = service.rules[0] as TimeWindowRule;
+		expect(first.startDate.toISOString().slice(0, 10)).toBe('2024-02-01');
+	});
+
 	it('should add a new rule', () => {
 		const newRule: IfThenRule = {
 			id: 'test-rule',

src/app/services/rule-service.ts

@@ -7,11 +7,15 @@ export enum RuleType {
 	TIME_WINDOW = 'time_window',
 }
 
+export type RuleForce = 'obligation' | 'preference';
+
 export interface BaseRule {
 	id: string;
 	name: string;
 	type: RuleType;
 	enabled: boolean;
+	/** Missing force is a legacy preference and is migrated on read. */
+	force?: RuleForce;
 }
 
 export type PlacementStrategy = 'before' | 'after' | 'around' | 'auto';
@@ -41,6 +45,7 @@ interface SerializedRule {
 	name: string;
 	type: RuleType;
 	enabled: boolean;
+	force?: RuleForce;
 	dayOfWeek?: number;
 	placeDays: number;
 	placeType: SelectableDayType;
@@ -63,6 +68,7 @@ export class RuleService {
 			name: 'Samedi Malin',
 			type: RuleType.IF_THEN,
 			enabled: true,
+			force: 'preference',
 			dayOfWeek: 6, // Saturday
 			placeDays: 2,
 			placeType: SelectableDayType.CP,
@@ -75,6 +81,7 @@ export class RuleService {
 			name: 'Vacances de Noël',
 			type: RuleType.TIME_WINDOW,
 			enabled: true,
+			force: 'preference',
 			startDate: new Date(new Date().getFullYear(), 11, 20), // Dec 20
 			endDate: new Date(new Date().getFullYear() + 1, 0, 3), // Jan 3 next year
 			placeDays: 5,
@@ -98,22 +105,31 @@ export class RuleService {
 			if (rule.type === RuleType.TIME_WINDOW) {
 				return {
 					...rule,
+					force: rule.force ?? 'preference',
 					startDate: new Date(rule.startDate as string),
 					endDate: new Date(rule.endDate as string),
 				} as TimeWindowRule;
 			}
-			return rule as IfThenRule;
+			return { ...rule, force: rule.force ?? 'preference' } as IfThenRule;
 		});
 	}
 
 	public addRule(rule: VacationRule): void {
-		this.rawRulesSignal.update((rules) => [...rules, rule as unknown as SerializedRule]);
+		this.rawRulesSignal.update((rules) => [
+			...rules,
+			{ ...rule, force: rule.force ?? 'preference' } as unknown as SerializedRule,
+		]);
 	}
 
 	public updateRule(updatedRule: VacationRule): void {
 		this.rawRulesSignal.update((rules) =>
 			rules.map((rule) =>
-				rule.id === updatedRule.id ? (updatedRule as unknown as SerializedRule) : rule,
+				rule.id === updatedRule.id
+					? ({
+							...updatedRule,
+							force: updatedRule.force ?? 'preference',
+						} as unknown as SerializedRule)
+					: rule,
 			),
 		);
 	}

src/app/services/translation-service.ts

@@ -13,10 +13,22 @@ export interface AppTranslations {
 		calculate: string;
 		remainingDaysWarning: string;
 		remainingDaysManualPlace: string;
+		deleteEntry: string;
 		chooseDate: string;
+		availableDate: string;
 		daySuffix: string;
 		daysSuffix: string;
 		expires: string;
+		remainingClassification: {
+			unavoidableExpiry: string;
+			atRisk: string;
+			deferred: string;
+		};
+		remainingReason: {
+			unavoidableExpiry: string;
+			atRisk: string;
+			deferred: string;
+		};
 	};
 	dayTypes: {
 		weekend: string;
@@ -41,6 +53,7 @@ export interface AppTranslations {
 		ifThenTemplate: string;
 		timeWindowTemplate: string;
 		editRule: string;
+		deleteRule: string;
 		addRule: string;
 		place: string;
 		ruleName: string;
@@ -49,6 +62,9 @@ export interface AppTranslations {
 		type: string;
 		position: string;
 		getBonus: string;
+		force: string;
+		obligation: string;
+		preference: string;
 		startDate: string;
 		endDate: string;
 		cancel: string;
@@ -75,6 +91,20 @@ export interface AppTranslations {
 			auto: string;
 		};
 	};
+	planning: {
+		invalidInput: string;
+		conflict: string;
+		incomplete: string;
+		error: string;
+		complete: string;
+	};
+	benchmark: {
+		title: string;
+		instructions: string;
+		run: string;
+		running: string;
+		copy: string;
+	};
 	loading: string;
 	weekdaysShort: string[];
 }

src/app/services/user-input-service.ts

@@ -10,11 +10,13 @@ export class UserInputService {
 	}
 
 	private getInitialValues(): VacDay[] {
+		const availableDate = new Date();
 		return [
 			{
 				id: crypto.randomUUID(),
 				type: SelectableDayType.CP,
 				numberOfDays: this.getRandomNumber(),
+				availableDate,
 				// today + 365 days
 				expiryDate: new Date(new Date().setFullYear(new Date().getFullYear() + 1)),
 			},
@@ -22,12 +24,14 @@ export class UserInputService {
 				id: crypto.randomUUID(),
 				type: SelectableDayType.RTT,
 				numberOfDays: this.getRandomNumber(),
+				availableDate: new Date(availableDate),
 				expiryDate: new Date(new Date().setFullYear(new Date().getFullYear() + 1)),
 			},
 			{
 				id: crypto.randomUUID(),
 				type: SelectableDayType.OTHER,
 				numberOfDays: this.getRandomNumber(),
+				availableDate: new Date(availableDate),
 				expiryDate: new Date(new Date().setFullYear(new Date().getFullYear() + 1)),
 			},
 		];
@@ -38,6 +42,7 @@ export class UserInputService {
 			id: crypto.randomUUID(),
 			type: SelectableDayType.CP,
 			numberOfDays: 1,
+			availableDate: new Date(),
 			expiryDate: new Date(new Date().setFullYear(new Date().getFullYear() + 1)),
 		};
 	}

src/i18n/de.json

@@ -9,10 +9,22 @@
 		"calculate": "Berechnen",
 		"remainingDaysWarning": "{count} nicht platziert:",
 		"remainingDaysManualPlace": "Bitte manuell platzieren.",
+		"deleteEntry": "Eintrag löschen",
 		"chooseDate": "Datum auswählen",
+		"availableDate": "Verfügbar ab",
 		"daySuffix": "Tag",
 		"daysSuffix": "Tage",
-		"expires": "abl."
+		"expires": "abl.",
+		"remainingClassification": {
+			"unavoidableExpiry": "Unvermeidbarer Ablauf",
+			"atRisk": "Gefährdet",
+			"deferred": "Aufgeschoben"
+		},
+		"remainingReason": {
+			"unavoidableExpiry": "vor dem Planungshorizont abgelaufen",
+			"atRisk": "läuft im Planungshorizont ab",
+			"deferred": "nach dem Planungshorizont verfügbar"
+		}
 	},
 	"dayTypes": {
 		"weekend": "Wochenende",
@@ -37,6 +49,7 @@
 		"ifThenTemplate": "Wenn {type} dann {placement}",
 		"timeWindowTemplate": "Zeitfenster {startDate} bis {endDate}",
 		"editRule": "Regel bearbeiten",
+		"deleteRule": "Regel löschen",
 		"addRule": "Regel hinzufügen",
 		"place": "platzieren",
 		"ruleName": "Regelname",
@@ -45,6 +58,9 @@
 		"type": "Typ",
 		"position": "Position",
 		"getBonus": "Bonus erhalten",
+		"force": "Regelverbindlichkeit",
+		"obligation": "Verpflichtung",
+		"preference": "Präferenz",
 		"startDate": "Startdatum",
 		"endDate": "Enddatum",
 		"cancel": "Abbrechen",
@@ -71,6 +87,20 @@
 			"auto": "automatisch"
 		}
 	},
+	"planning": {
+		"invalidInput": "Die Planungsdaten sind ungültig.",
+		"conflict": "Die Verpflichtungen können nicht gemeinsam erfüllt werden.",
+		"incomplete": "Die Berechnung wurde vor Abschluss aller Qualitätsstufen beendet.",
+		"error": "Bei der Planung ist ein unerwarteter Fehler aufgetreten.",
+		"complete": "Plan berechnet."
+	},
+	"benchmark": {
+		"title": "Benchmark der Urlaubsplanung",
+		"instructions": "Führen Sie die fünf festen Szenarien aus und kopieren Sie den Bericht.",
+		"run": "Benchmark starten",
+		"running": "Läuft…",
+		"copy": "Bericht kopieren"
+	},
 	"loading": "Wird geladen...",
 	"weekdaysShort": ["So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"]
 }

src/i18n/en.json

@@ -9,10 +9,22 @@
 		"calculate": "Calculate",
 		"remainingDaysWarning": "{count} vacation day{plural} not placed:",
 		"remainingDaysManualPlace": "Please place them manually.",
+		"deleteEntry": "Delete entry",
 		"chooseDate": "Choose a date",
+		"availableDate": "Available from",
 		"daySuffix": "day",
 		"daysSuffix": "days",
-		"expires": "exp."
+		"expires": "exp.",
+		"remainingClassification": {
+			"unavoidableExpiry": "Unavoidable expiry",
+			"atRisk": "At risk",
+			"deferred": "Deferred"
+		},
+		"remainingReason": {
+			"unavoidableExpiry": "expired before the horizon",
+			"atRisk": "expires within the horizon",
+			"deferred": "available after the horizon"
+		}
 	},
 	"dayTypes": {
 		"weekend": "Weekend",
@@ -37,6 +49,7 @@
 		"ifThenTemplate": "If a holiday falls on a <strong>{day}</strong>, place <strong>{placeDays}</strong> day(s) <strong>{placeType}</strong> <strong>{placement}</strong> and get <strong>{rewardDays}</strong> day(s) <strong>{rewardType}</strong> as a bonus.",
 		"timeWindowTemplate": "Place <strong>{placeDays}</strong> day(s) <strong>{placeType}</strong> between <strong>{startDate}</strong> and <strong>{endDate}</strong>.",
 		"editRule": "Edit rule",
+		"deleteRule": "Delete rule",
 		"addRule": "Add a rule",
 		"place": "Place",
 		"ruleName": "Rule name",
@@ -45,6 +58,9 @@
 		"type": "Type",
 		"position": "Position",
 		"getBonus": "Get as bonus",
+		"force": "Rule force",
+		"obligation": "Obligation",
+		"preference": "Preference",
 		"startDate": "Start date",
 		"endDate": "End date",
 		"cancel": "Cancel",
@@ -71,6 +87,20 @@
 			"auto": "Auto (Best choice)"
 		}
 	},
+	"planning": {
+		"invalidInput": "The planning input is invalid.",
+		"conflict": "The obligations cannot be satisfied together.",
+		"incomplete": "Calculation stopped before all quality stages completed.",
+		"error": "The planner encountered an unexpected error.",
+		"complete": "Plan calculated."
+	},
+	"benchmark": {
+		"title": "Leave planner benchmark",
+		"instructions": "Run the five fixed scenarios and copy the resulting report.",
+		"run": "Run benchmark",
+		"running": "Running…",
+		"copy": "Copy report"
+	},
 	"loading": "Calculating...",
 	"weekdaysShort": ["M", "T", "W", "T", "F", "S", "S"]
 }

src/i18n/es.json

@@ -9,10 +9,22 @@
 		"calculate": "Calcular",
 		"remainingDaysWarning": "{count} día{plural} de vacaciones no colocado{plural}:",
 		"remainingDaysManualPlace": "Por favor, colóquelos manualmente.",
+		"deleteEntry": "Eliminar entrada",
 		"chooseDate": "Elija una fecha",
+		"availableDate": "Disponible desde",
 		"daySuffix": "día",
 		"daysSuffix": "días",
-		"expires": "exp."
+		"expires": "exp.",
+		"remainingClassification": {
+			"unavoidableExpiry": "Vencimiento inevitable",
+			"atRisk": "En riesgo",
+			"deferred": "Aplazado"
+		},
+		"remainingReason": {
+			"unavoidableExpiry": "caducó antes del horizonte",
+			"atRisk": "caduca dentro del horizonte",
+			"deferred": "disponible después del horizonte"
+		}
 	},
 	"dayTypes": {
 		"weekend": "Fin de semana",
@@ -37,6 +49,7 @@
 		"ifThenTemplate": "Si un día festivo cae en <strong>{day}</strong>, colocar <strong>{placeDays}</strong> día(s) <strong>{placeType}</strong> <strong>{placement}</strong> y obtener <strong>{rewardDays}</strong> día(s) <strong>{rewardType}</strong> de bonificación.",
 		"timeWindowTemplate": "Colocar <strong>{placeDays}</strong> día(s) <strong>{placeType}</strong> entre el <strong>{startDate}</strong> y el <strong>{endDate}</strong>.",
 		"editRule": "Editar regla",
+		"deleteRule": "Eliminar regla",
 		"addRule": "Añadir una regla",
 		"place": "Colocar",
 		"ruleName": "Nombre de la regla",
@@ -45,6 +58,9 @@
 		"type": "Tipo",
 		"position": "Posición",
 		"getBonus": "Obtener en bonificación",
+		"force": "Fuerza de la regla",
+		"obligation": "Obligación",
+		"preference": "Preferencia",
 		"startDate": "Fecha de inicio",
 		"endDate": "Fecha de fin",
 		"cancel": "Cancelar",
@@ -71,6 +87,20 @@
 			"auto": "Auto (Mejor opción)"
 		}
 	},
+	"planning": {
+		"invalidInput": "Los datos de planificación no son válidos.",
+		"conflict": "Las obligaciones no se pueden satisfacer juntas.",
+		"incomplete": "El cálculo se detuvo antes de completar todas las etapas de calidad.",
+		"error": "El planificador encontró un error inesperado.",
+		"complete": "Plan calculado."
+	},
+	"benchmark": {
+		"title": "Prueba del planificador de vacaciones",
+		"instructions": "Ejecuta los cinco escenarios fijos y copia el informe resultante.",
+		"run": "Ejecutar prueba",
+		"running": "En curso…",
+		"copy": "Copiar informe"
+	},
 	"loading": "Calculando...",
 	"weekdaysShort": ["L", "M", "M", "J", "V", "S", "D"]
 }

src/i18n/fr.json

@@ -9,10 +9,22 @@
 		"calculate": "Calculer",
 		"remainingDaysWarning": "{count} jour{plural} de vacances non placé{plural}:",
 		"remainingDaysManualPlace": "Veuillez les placer manuellement.",
+		"deleteEntry": "Supprimer l’entrée",
 		"chooseDate": "Choisissez une date",
+		"availableDate": "Disponible à partir du",
 		"daySuffix": "jour",
 		"daysSuffix": "jours",
-		"expires": "exp."
+		"expires": "exp.",
+		"remainingClassification": {
+			"unavoidableExpiry": "Expiration inévitable",
+			"atRisk": "À risque",
+			"deferred": "Différé"
+		},
+		"remainingReason": {
+			"unavoidableExpiry": "expiré avant l’horizon",
+			"atRisk": "expire pendant l’horizon",
+			"deferred": "disponible après l’horizon"
+		}
 	},
 	"dayTypes": {
 		"weekend": "Weekend",
@@ -37,6 +49,7 @@
 		"ifThenTemplate": "Si un jour férié tombe un <strong>{day}</strong>, placer <strong>{placeDays}</strong> jour(s) <strong>{placeType}</strong> <strong>{placement}</strong> et obtenir <strong>{rewardDays}</strong> jour(s) <strong>{rewardType}</strong> en bonus.",
 		"timeWindowTemplate": "Placer <strong>{placeDays}</strong> jour(s) <strong>{placeType}</strong> entre le <strong>{startDate}</strong> et le <strong>{endDate}</strong>.",
 		"editRule": "Modifier la règle",
+		"deleteRule": "Supprimer la règle",
 		"addRule": "Ajouter une règle",
 		"place": "Placer",
 		"ruleName": "Nom de la règle",
@@ -45,6 +58,9 @@
 		"type": "Type",
 		"position": "Position",
 		"getBonus": "Obtenir en bonus",
+		"force": "Force de la règle",
+		"obligation": "Obligation",
+		"preference": "Préférence",
 		"startDate": "Date de début",
 		"endDate": "Date de fin",
 		"cancel": "Annuler",
@@ -71,6 +87,20 @@
 			"auto": "Auto (Meilleur choix)"
 		}
 	},
+	"planning": {
+		"invalidInput": "Les données de planification sont invalides.",
+		"conflict": "Les obligations ne peuvent pas être satisfaites ensemble.",
+		"incomplete": "Le calcul s’est arrêté avant la fin des critères de qualité.",
+		"error": "Le planificateur a rencontré une erreur inattendue.",
+		"complete": "Plan calculé."
+	},
+	"benchmark": {
+		"title": "Benchmark du planificateur de congés",
+		"instructions": "Lancez les cinq scénarios fixes et copiez le rapport obtenu.",
+		"run": "Lancer le benchmark",
+		"running": "En cours…",
+		"copy": "Copier le rapport"
+	},
 	"loading": "Calcul en cours...",
 	"weekdaysShort": ["L", "M", "M", "J", "V", "S", "D"]
 }