refactor: migrate testing framework from Karma/Jasmine to Vitest with Angular support

src/app/components/dialog/calendar-settings-dialog/calendar-settings-dialog.spec.ts

@@ -1,6 +1,7 @@
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 import { provideZonelessChangeDetection } from '@angular/core';
 import { MatDialogRef } from '@angular/material/dialog';
+import { vi } from 'vitest';
 import { CalendarSettingsDialog } from './calendar-settings-dialog';
 
 describe('CalendarSettingsDialog', () => {
@@ -15,7 +16,7 @@ describe('CalendarSettingsDialog', () => {
 				{
 					provide: MatDialogRef,
 					useValue: {
-						close: jasmine.createSpy('close'),
+						close: vi.fn(),
 					},
 				},
 			],

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

@@ -33,7 +33,7 @@ describe('RulesPanel', () => {
 	it('should start adding new If-Then rule', () => {
 		component.startAddNew(RuleType.IF_THEN);
 
-		expect(component['isAddingNew']()).toBeTrue();
+		expect(component['isAddingNew']()).toBe(true);
 		expect(component['newRuleType']()).toBe(RuleType.IF_THEN);
 		expect(component['editBuffer'].type).toBe(RuleType.IF_THEN);
 		expect(component['editBuffer'].name).toBe('Nouvelle Règle');
@@ -42,7 +42,7 @@ describe('RulesPanel', () => {
 	it('should start adding new Time Window rule', () => {
 		component.startAddNew(RuleType.TIME_WINDOW);
 
-		expect(component['isAddingNew']()).toBeTrue();
+		expect(component['isAddingNew']()).toBe(true);
 		expect(component['newRuleType']()).toBe(RuleType.TIME_WINDOW);
 		expect(component['editBuffer'].type).toBe(RuleType.TIME_WINDOW);
 		expect(component['editBuffer'].name).toBe('Nouvelle Période');
@@ -52,7 +52,7 @@ describe('RulesPanel', () => {
 		component.startAddNew(RuleType.IF_THEN);
 		component.cancelEdit();
 
-		expect(component['isAddingNew']()).toBeFalse();
+		expect(component['isAddingNew']()).toBe(false);
 		expect(component['editingRuleId']()).toBeNull();
 		expect(Object.keys(component['editBuffer']).length).toBe(0);
 	});
@@ -65,7 +65,7 @@ describe('RulesPanel', () => {
 		component.saveEdit();
 
 		expect(component.rules.length).toBe(initialCount + 1);
-		expect(component.rules.some((r) => r.name === 'Custom Test Rule')).toBeTrue();
+		expect(component.rules.some((r) => r.name === 'Custom Test Rule')).toBe(true);
 	});
 
 	it('should update an existing rule', () => {
@@ -89,7 +89,7 @@ describe('RulesPanel', () => {
 		component.deleteRule(targetId, mockEvent);
 
 		expect(component.rules.length).toBe(initialCount - 1);
-		expect(component.rules.some((r) => r.id === targetId)).toBeFalse();
+		expect(component.rules.some((r) => r.id === targetId)).toBe(false);
 	});
 
 	it('should toggle a rule', () => {

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

@@ -1,4 +1,4 @@
-import { Component, ChangeDetectionStrategy, inject, signal } from '@angular/core';
+import { Component, ChangeDetectionStrategy, inject, signal, Injectable } from '@angular/core';
 import {
 	RuleService,
 	RuleType,
@@ -26,6 +26,7 @@ import {
 } from '@angular/material/core';
 import { CdkDragDrop, CdkDropList, CdkDrag } from '@angular/cdk/drag-drop';
 
+@Injectable()
 class CustomDateAdapter extends NativeDateAdapter {
 	override format(date: Date, displayFormat: unknown): string {
 		if (displayFormat === 'input') {

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

@@ -1,4 +1,4 @@
-import { Component, input, output, ChangeDetectionStrategy } from '@angular/core';
+import { Component, input, output, ChangeDetectionStrategy, Injectable } from '@angular/core';
 import { SelectableDayType, tooltipTypeMapping, VacDay } from '../../../services/calendar-service';
 import { MatCard } from '@angular/material/card';
 import { MatOption, MatSelect } from '@angular/material/select';
@@ -18,6 +18,7 @@ import {
 import { MatIconModule } from '@angular/material/icon';
 import { MatButtonModule } from '@angular/material/button';
 
+@Injectable()
 class CustomDateAdapter extends NativeDateAdapter {
 	override format(date: Date, displayFormat: unknown): string {
 		if (displayFormat === 'input') {