Refactor application structure to use WorkspaceService for state management

- Removed direct state management from components and centralized it in WorkspaceService.
- Updated ApartmentsPage, TenantsPage, LeasesPage, and DashboardPage to utilize WorkspaceService for data handling.
- Introduced SessionService to manage user session state and authentication.
- Simplified component templates to reflect new service-based architecture.
- Removed unused ConfigService and its tests.
- Added lease.html template for lease document generation.
- Created app.routes.spec.ts for route mapping tests.

frontend/src/app/components/tenants-page/tenants-page.html

@@ -10,7 +10,7 @@
         <span aria-hidden="true">+</span> Ajouter un locataire
       </button>
     </header>
-    @if (tenants().length === 0) {
+    @if (workspace.tenants().length === 0) {
       <article class="empty-state">
         <p class="eyebrow">Premier dossier</p>
         <h2>Aucun locataire enregistré</h2>
@@ -21,14 +21,14 @@
       </article>
     } @else {
       <div class="tenant-grid">
-        @for (tenant of tenants(); track tenant.id) {
+        @for (tenant of workspace.tenants(); track tenant.id) {
           <app-tenant-card
             [tenant]="tenant"
-            [attachmentError]="attachmentError()"
+            [attachmentError]="workspace.tenantAttachmentError()"
             (editRequested)="openEditForm($event)"
-            (deleteRequested)="deleteRequested.emit($event)"
-            (attachmentUploadRequested)="attachmentUploadRequested.emit($event)"
-            (attachmentDownloadRequested)="attachmentDownloadRequested.emit($event)"
+            (deleteRequested)="workspace.deleteTenant($event)"
+            (attachmentUploadRequested)="workspace.uploadTenantAttachment($event.tenantId, $event.file)"
+            (attachmentDownloadRequested)="workspace.downloadTenantAttachment($event.tenantId, $event.attachment)"
           />
         }
       </div>
@@ -38,6 +38,6 @@
   <app-tenant-form
     [tenant]="editingTenant()"
     (cancelled)="closeForm()"
-    (submitted)="tenantSaved.emit($event); closeForm()"
+    (submitted)="workspace.saveTenant($event.tenant, editingTenant()?.id); closeForm()"
   />
 }

frontend/src/app/components/tenants-page/tenants-page.spec.ts

@@ -1,10 +1,12 @@
 import { TestBed } from '@angular/core/testing';
 import { TenantsPage } from './tenants-page';
+import { WorkspaceService } from '../../services/workspace.service';
 
 describe('TenantsPage', () => {
+  beforeEach(() => TestBed.configureTestingModule({ providers: [{ provide: WorkspaceService, useValue: { loadTenants: () => undefined } }] }));
+
   it('opens and closes the focused tenant form module', () => {
     const fixture = TestBed.createComponent(TenantsPage);
-    fixture.componentRef.setInput('tenants', []);
     const component = fixture.componentInstance;
 
     component.openAddForm();

frontend/src/app/components/tenants-page/tenants-page.ts

@@ -1,10 +1,9 @@
-import { Component, input, output, signal } from '@angular/core';
+import { Component, inject, signal } from '@angular/core';
 import { MatButtonModule } from '@angular/material/button';
 import { Tenant } from '../../services/tenant.service';
-import { TenantCard, TenantAttachmentRequest } from '../tenant-card/tenant-card';
-import { TenantForm, TenantSaveRequest } from '../tenant-form/tenant-form';
-
-export type { TenantAttachmentRequest, TenantSaveRequest };
+import { WorkspaceService } from '../../services/workspace.service';
+import { TenantCard } from '../tenant-card/tenant-card';
+import { TenantForm } from '../tenant-form/tenant-form';
 
 @Component({
   selector: 'app-tenants-page',
@@ -13,16 +12,13 @@ export type { TenantAttachmentRequest, TenantSaveRequest };
   styleUrl: './tenants-page.css',
 })
 export class TenantsPage {
-  readonly tenants = input.required<Tenant[]>();
-  readonly attachmentError = input('');
-  readonly tenantSaved = output<TenantSaveRequest>();
-  readonly deleteRequested = output<string>();
-  readonly attachmentUploadRequested = output<{ tenantId: string; file: File }>();
-  readonly attachmentDownloadRequested = output<TenantAttachmentRequest>();
+  readonly workspace = inject(WorkspaceService);
 
   readonly showForm = signal(false);
   readonly editingTenant = signal<Tenant | null>(null);
 
+  constructor() { this.workspace.loadTenants(); }
+
   openAddForm(): void {
     this.editingTenant.set(null);
     this.showForm.set(true);