T hoguet/issue5 (#37)

* enregistrer les calendar settings dans le localstorage
Fixes #5

* Refactor calendar settings service to use a definitions map for settings and update related components to access settings via a getter method

* Update src/app/services/calendar-settings-service.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Refactor calendar settings service to utilize a new storedSignal implementation for localStorage persistence and restore the stored-signal utility

* Update typescript-eslint to version 8.46.3 and enhance error handling in storedSignal function

* Update src/app/services/calendar-settings-service.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Enhance storedSignal function to accept an Injector for improved context handling in localStorage persistence

* Skip initial execution in storedSignal effect to prevent unnecessary localStorage writes

* Refactor get method in CalendarSettingsService to throw an error if the setting ID doesn't exist

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

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

@@ -17,17 +17,29 @@ describe('CalendarSettingsService', () => {
 	});
 
 	it('should initialize with default values', () => {
-		expect(service.showWeekNumbers()).toBe(false);
-		expect(service.samediMalin()).toBe(true);
+		expect(service.get('showWeekNumbers')()).toBe(false);
+		expect(service.get('samediMalin')()).toBe(true);
 	});
 
 	it('should allow updating showWeekNumbers', () => {
-		service.showWeekNumbers.set(true);
-		expect(service.showWeekNumbers()).toBe(true);
+		service.get('showWeekNumbers').set(true);
+		expect(service.get('showWeekNumbers')()).toBe(true);
 	});
 
 	it('should allow updating samediMalin', () => {
-		service.samediMalin.set(false);
-		expect(service.samediMalin()).toBe(false);
+		service.get('samediMalin').set(false);
+		expect(service.get('samediMalin')()).toBe(false);
+	});
+
+	it('should provide settings array for UI iteration', () => {
+		const settingsArray = service.settingsArray;
+		expect(settingsArray.length).toBe(2);
+		expect(settingsArray[0].id).toBe('showWeekNumbers');
+		expect(settingsArray[1].id).toBe('samediMalin');
+	});
+
+	it('should return correct descriptions', () => {
+		expect(service.getDescription('showWeekNumbers')).toBe('Afficher les numéros de semaine');
+		expect(service.getDescription('samediMalin')).toBe('Activer le Samedi Malin');
 	});
 });