feat(dashboard-admin): connect admin dashboard to real API data (Ticket #92)

- Frontend:
  - Create UserService to handle user-related API calls (gestionnaires, parents, AMs, admins)
  - Update AdminDashboardScreen to use dynamic widgets
  - Implement dynamic management widgets:
    - GestionnaireManagementWidget
    - ParentManagementWidget
    - AssistanteMaternelleManagementWidget
    - AdminManagementWidget
  - Add data models: ParentModel, AssistanteMaternelleModel
  - Update AppUser model
  - Update ApiConfig

- Backend:
  - Update controllers (Parents, AMs, Gestionnaires, Users) to allow ADMINISTRATEUR role to list users
  - Fix: Activate endpoint GET /gestionnaires (import GestionnairesModule in UserModule)

- Docs:
  - Add note about backend fix for Gestionnaires module
  - Update .cursorrules to forbid worktrees

- Seed:
  - Add test data seed script (reset-and-seed-db.sh)

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/routes/user/user.module.ts

@@ -9,6 +9,7 @@ import { ParentsModule } from '../parents/parents.module';
 import { AssistanteMaternelle } from 'src/entities/assistantes_maternelles.entity';
 import { AssistantesMaternellesModule } from '../assistantes_maternelles/assistantes_maternelles.module';
 import { Parents } from 'src/entities/parents.entity';
+import { GestionnairesModule } from './gestionnaires/gestionnaires.module';
 
 @Module({
   imports: [TypeOrmModule.forFeature(
@@ -20,6 +21,7 @@ import { Parents } from 'src/entities/parents.entity';
     ]), forwardRef(() => AuthModule),
     ParentsModule,
     AssistantesMaternellesModule,
+    GestionnairesModule,
   ],
   controllers: [UserController],
   providers: [UserService],