fix(backoffice): add error+retry states to Users, Monitoring, Analytics, Reports

Phase 8 (RC-01): these 4 list/dashboard pages had no error-state handling
on their primary data-load subscriptions — on a gateway error, `loading`
was either never reset (Users, Monitoring, Analytics: genuine infinite-
spinner risk, nested subscribe chain in Analytics never resolved on
failure) or there was no loading/empty/error handling at all (Reports
queue: raw table with zero skeleton or fallback).

- admin-users.facade.ts, admin-monitoring.facade.ts: add `error` signal,
  error callback on the primary load subscribe so `loading` always
  resolves.
- admin-analytics.facade.ts: add `error` signal; every level of the
  4-deep nested gateway subscribe chain (orders -> products ->
  categories -> reviews) now has an error handler that resolves loading
  instead of leaving it stuck true.
- admin-moderation.facade.ts: add `reportsLoading`/`reportsError` signals
  (reports list had none previously).
- Templates: reuse existing `app-skeleton`/`app-empty-state`/`app-button`
  primitives for the new error branch, `common.retry` label, two new
  generic `common.errorTitle`/`common.errorDescription` i18n keys added
  to en/ru/hy (reused across all 4 fixes instead of one-off per-page
  copy).

Verified: tsc --noEmit clean, `npm run build` green (pre-existing bundle-
budget warning only, unrelated). Live-checked Home (375px) and Backoffice
Products (1024px) — no console errors, tables/cards render without
overflow.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/features/admin/analytics/facade/admin-analytics.facade.ts

@@ -38,6 +38,7 @@ export class AdminAnalyticsFacade {
 
   readonly dateRange = signal<AdminAnalyticsDateRange>(30);
   readonly loading = signal(false);
+  readonly error = signal(false);
   readonly summary = signal<AdminAnalyticsSummary | null>(null);
   readonly salesSeries = signal<AdminAnalyticsSeriesPoint[]>([]);
   readonly topProducts = signal<AdminAnalyticsTopProduct[]>([]);
@@ -63,6 +64,7 @@ export class AdminAnalyticsFacade {
 
   load(): void {
     this.loading.set(true);
+    this.error.set(false);
     this.dashboardFacade.ensureLoaded();
     this.recentActivity.set(
       this.dashboardFacade.activityEntries().map(entry => ({
@@ -72,7 +74,10 @@ export class AdminAnalyticsFacade {
       })),
     );
 
-    this.ordersGateway.loadOrders({ search: '', status: 'all', page: 1, pageSize: 100000 }).pipe(take(1)).subscribe(orderResult => {
+    const fail = (): void => { this.loading.set(false); this.error.set(true); };
+
+    this.ordersGateway.loadOrders({ search: '', status: 'all', page: 1, pageSize: 100000 }).pipe(take(1)).subscribe({
+      next: orderResult => {
         const cutoff = Date.now() - this.dateRange() * 24 * 60 * 60 * 1000;
         const inRange = orderResult.items.filter(order => new Date(order.createdAt).getTime() >= cutoff);
 
@@ -84,9 +89,12 @@ export class AdminAnalyticsFacade {
         const ordersCount = inRange.length;
         const uniqueCustomers = new Set(inRange.map(order => order.customer.email)).size;
 
-      this.productsGateway.loadProducts({ search: '', categoryId: null, visibility: 'all', stock: 'all', includeArchived: true, sort: 'title', page: 1, pageSize: 100000 }).pipe(take(1)).subscribe(productResult => {
+        this.productsGateway.loadProducts({ search: '', categoryId: null, visibility: 'all', stock: 'all', includeArchived: true, sort: 'title', page: 1, pageSize: 100000 }).pipe(take(1)).subscribe({
-        this.categoriesGateway.loadCategories({ search: '', visibility: 'all', includeDeleted: true }).pipe(take(1)).subscribe(categories => {
+          next: productResult => {
-          this.moderationGateway.loadReviews({ search: '', status: 'all', rating: 'all', page: 1, pageSize: 100000 }).pipe(take(1)).subscribe(reviewResult => {
+            this.categoriesGateway.loadCategories({ search: '', visibility: 'all', includeDeleted: true }).pipe(take(1)).subscribe({
+              next: categories => {
+                this.moderationGateway.loadReviews({ search: '', status: 'all', rating: 'all', page: 1, pageSize: 100000 }).pipe(take(1)).subscribe({
+                  next: reviewResult => {
                     const products = productResult.items;
                     const reviews = reviewResult.items;
 
@@ -107,9 +115,17 @@ export class AdminAnalyticsFacade {
                     this.recommendations.set(this.buildRecommendations(products, categories));
 
                     this.loading.set(false);
+                  },
+                  error: fail
                 });
+              },
+              error: fail
             });
+          },
+          error: fail
         });
+      },
+      error: fail
     });
   }
 

src/app/features/admin/analytics/pages/admin-analytics-page.component.html

@@ -11,6 +11,14 @@
     </div>
   </div>
 
+  @if (facade.error()) {
+    <app-empty-state [title]="'common.errorTitle' | translate" [description]="'common.errorDescription' | translate">
+      <span slot="actions">
+        <app-button variant="primary" (click)="facade.load()">{{ 'common.retry' | translate }}</app-button>
+      </span>
+    </app-empty-state>
+  } @else {
+
   <div class="tabs" role="tablist" [attr.aria-label]="'adminAnalytics.tabsLabel' | translate">
     @for (tab of tabs; track tab) {
       <button
@@ -245,4 +253,5 @@
       </div>
     </div>
   }
+  }
 </section>

src/app/features/admin/moderation/facade/admin-moderation.facade.ts

@@ -47,6 +47,8 @@ export class AdminModerationFacade {
   readonly loading = signal(false);
   readonly selected = signal<AdminReview | null>(null);
   readonly reports = signal<AdminReport[]>([]);
+  readonly reportsLoading = signal(false);
+  readonly reportsError = signal(false);
 
   readonly viewMode = signal<AdminModerationViewMode>((this.localStorage.getItem(VIEW_MODE_KEY) as AdminModerationViewMode) || 'table');
   readonly density = signal<AdminModerationDensity>((this.localStorage.getItem(DENSITY_KEY) as AdminModerationDensity) || 'comfortable');
@@ -167,7 +169,12 @@ export class AdminModerationFacade {
   }
 
   loadReports(): void {
-    this.gateway.loadReports().pipe(take(1)).subscribe({ next: reports => this.reports.set(reports) });
+    this.reportsLoading.set(true);
+    this.reportsError.set(false);
+    this.gateway.loadReports().pipe(take(1)).subscribe({
+      next: reports => { this.reports.set(reports); this.reportsLoading.set(false); },
+      error: () => { this.reports.set([]); this.reportsLoading.set(false); this.reportsError.set(true); }
+    });
   }
 
   setReportStatus(id: string, status: AdminReportStatus): void {

src/app/features/admin/moderation/pages/admin-reports-list-page.component.html

@@ -4,7 +4,18 @@
     <h1>{{ 'adminModeration.reportsQueue' | translate }}</h1>
   </header>
 
-  @if (facade.reports().length === 0) {
+  @if (facade.reportsLoading()) {
+    <div class="skeleton-rows" role="status" aria-live="polite" aria-busy="true">
+      @for (i of [1,2,3,4]; track i) { <app-skeleton shape="rect" height="40px" /> }
+      <span class="sr-only">{{ 'common.loading' | translate }}</span>
+    </div>
+  } @else if (facade.reportsError()) {
+    <app-empty-state [title]="'common.errorTitle' | translate" [description]="'common.errorDescription' | translate">
+      <span slot="actions">
+        <app-button variant="primary" (click)="facade.loadReports()">{{ 'common.retry' | translate }}</app-button>
+      </span>
+    </app-empty-state>
+  } @else if (facade.reports().length === 0) {
     <app-empty-state [title]="'adminModeration.reportsEmptyTitle' | translate" [description]="'adminModeration.reportsEmptyDescription' | translate" />
   } @else {
     <app-table>

src/app/features/admin/moderation/pages/admin-reports-list-page.component.ts

@@ -9,11 +9,12 @@ import { ButtonComponent } from '../../../../shared/ui/button/button.component';
 import { BadgeComponent } from '../../../../shared/ui/badge/badge.component';
 import { TableComponent } from '../../../../shared/ui/table/table.component';
 import { EmptyStateComponent } from '../../../../shared/ui/empty-state/empty-state.component';
+import { SkeletonComponent } from '../../../../shared/ui/skeleton/skeleton.component';
 
 @Component({
   selector: 'app-admin-reports-list-page',
   standalone: true,
-  imports: [CommonModule, TranslatePipe, ButtonComponent, BadgeComponent, TableComponent, EmptyStateComponent],
+  imports: [CommonModule, TranslatePipe, ButtonComponent, BadgeComponent, TableComponent, EmptyStateComponent, SkeletonComponent],
   templateUrl: './admin-reports-list-page.component.html',
   styleUrls: ['./admin-reports-list-page.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush

src/app/features/admin/monitoring/facade/admin-monitoring.facade.ts

@@ -12,10 +12,15 @@ export class AdminMonitoringFacade {
   readonly queues = signal<AdminQueue[]>([]);
   readonly webhooks = signal<AdminWebhookDelivery[]>([]);
   readonly loading = signal(false);
+  readonly error = signal(false);
 
   loadAll(): void {
     this.loading.set(true);
-    this.gateway.loadEvents(this.filters()).pipe(take(1)).subscribe(events => { this.events.set(events); this.loading.set(false); });
+    this.error.set(false);
+    this.gateway.loadEvents(this.filters()).pipe(take(1)).subscribe({
+      next: events => { this.events.set(events); this.loading.set(false); },
+      error: () => { this.events.set([]); this.loading.set(false); this.error.set(true); }
+    });
     this.gateway.loadQueues().pipe(take(1)).subscribe(queues => this.queues.set(queues));
     this.gateway.loadWebhooks().pipe(take(1)).subscribe(webhooks => this.webhooks.set(webhooks));
   }

src/app/features/admin/monitoring/pages/admin-monitoring-page.component.html

@@ -73,6 +73,12 @@
         }
         <span class="sr-only">{{ 'common.loading' | translate }}</span>
       </div>
+    } @else if (facade.error()) {
+      <app-empty-state [title]="'common.errorTitle' | translate" [description]="'common.errorDescription' | translate">
+        <span slot="actions">
+          <app-button variant="primary" (click)="facade.loadAll()">{{ 'common.retry' | translate }}</app-button>
+        </span>
+      </app-empty-state>
     } @else if (facade.events().length === 0) {
       <app-empty-state [title]="'adminMonitoring.eventsEmptyTitle' | translate" [description]="'adminMonitoring.eventsEmptyDescription' | translate" />
     } @else {

src/app/features/admin/monitoring/pages/admin-monitoring-page.component.ts

@@ -9,11 +9,12 @@ import { BadgeComponent } from '../../../../shared/ui/badge/badge.component';
 import { TableComponent } from '../../../../shared/ui/table/table.component';
 import { SkeletonComponent } from '../../../../shared/ui/skeleton/skeleton.component';
 import { EmptyStateComponent } from '../../../../shared/ui/empty-state/empty-state.component';
+import { ButtonComponent } from '../../../../shared/ui/button/button.component';
 
 @Component({
   selector: 'app-admin-monitoring-page',
   standalone: true,
-  imports: [CommonModule, FormsModule, TranslatePipe, InputComponent, BadgeComponent, TableComponent, SkeletonComponent, EmptyStateComponent],
+  imports: [CommonModule, FormsModule, TranslatePipe, InputComponent, BadgeComponent, TableComponent, SkeletonComponent, EmptyStateComponent, ButtonComponent],
   templateUrl: './admin-monitoring-page.component.html',
   styleUrls: ['./admin-monitoring-page.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush

src/app/features/admin/users/facade/admin-users.facade.ts

@@ -11,6 +11,7 @@ export class AdminUsersFacade {
   readonly roles = signal<AdminRole[]>([]);
   readonly invitations = signal<AdminInvitation[]>([]);
   readonly loading = signal(false);
+  readonly error = signal(false);
   readonly sessionsTarget = signal<AdminUser | null>(null);
   readonly sessions = signal<AdminSession[]>([]);
   readonly auditTarget = signal<AdminUser | null>(null);
@@ -18,7 +19,11 @@ export class AdminUsersFacade {
 
   loadAll(): void {
     this.loading.set(true);
-    this.gateway.loadUsers().pipe(take(1)).subscribe(users => { this.users.set(users); this.loading.set(false); });
+    this.error.set(false);
+    this.gateway.loadUsers().pipe(take(1)).subscribe({
+      next: users => { this.users.set(users); this.loading.set(false); },
+      error: () => { this.users.set([]); this.loading.set(false); this.error.set(true); }
+    });
     this.gateway.loadRoles().pipe(take(1)).subscribe(roles => this.roles.set(roles));
     this.gateway.loadInvitations().pipe(take(1)).subscribe(invitations => this.invitations.set(invitations));
   }

src/app/features/admin/users/pages/admin-users-page.component.html

@@ -6,6 +6,12 @@
         @for (i of [1,2,3]; track i) { <app-skeleton shape="rect" height="40px" /> }
         <span class="sr-only">{{ 'common.loading' | translate }}</span>
       </div>
+    } @else if (facade.error()) {
+      <app-empty-state [title]="'common.errorTitle' | translate" [description]="'common.errorDescription' | translate">
+        <span slot="actions">
+          <app-button variant="primary" (click)="facade.loadAll()">{{ 'common.retry' | translate }}</app-button>
+        </span>
+      </app-empty-state>
     } @else if (facade.users().length === 0) {
       <app-empty-state [title]="'adminUsers.emptyTitle' | translate" [description]="'adminUsers.emptyDescription' | translate" />
     } @else {

src/app/i18n/en.ts

@@ -1084,6 +1084,8 @@ export const en: Translations = {
     retry: 'Try again',
     loading: 'Loading...',
     remove: 'Remove',
+    errorTitle: 'Something went wrong',
+    errorDescription: 'We could not load this data. Please try again.',
   },
   location: {
     allRegions: 'All regions',

src/app/i18n/hy.ts

@@ -1084,6 +1084,8 @@ export const hy: Translations = {
     retry: 'Փորձել կրկին',
     loading: 'Բեռնում...',
     remove: 'Հեռացնել',
+    errorTitle: 'Ինչ-որ բան այն չէ',
+    errorDescription: 'Չհաջողվեց բեռնել տվյալները։ Փորձեք կրկին։',
   },
   location: {
     allRegions: 'Բոլոր տարածաշրջանները',

src/app/i18n/ru.ts

@@ -1084,6 +1084,8 @@ export const ru: Translations = {
     retry: 'Попробовать снова',
     loading: 'Загрузка...',
     remove: 'Удалить',
+    errorTitle: 'Что-то пошло не так',
+    errorDescription: 'Не удалось загрузить данные. Попробуйте ещё раз.',
   },
   location: {
     allRegions: 'Все регионы',

src/app/i18n/translations.ts

@@ -1083,6 +1083,8 @@ export interface Translations {
     retry: string;
     loading: string;
     remove: string;
+    errorTitle: string;
+    errorDescription: string;
   };
   location: {
     allRegions: string;