feat(ui): обновить KPI с card-35 на stats-12 во всех компонентах

Заменены ссылки на блоки card-35 на stats-12 в документации и компонентах, включая KpiStatGrid, CertKpiCards, DomainKpiCards, GroupKpiCards и ServiceKpiCards. Удален неиспользуемый компонент AppCard. Добавлены иконки для улучшения визуализации KPI.

Co-authored-by: Cursor <[email protected]>

.cursor/rules/reui-mcp.mdc

@@ -36,7 +36,7 @@ alwaysApply: true
 | Data Grid | `@reui` | `@/components/reui/data-grid/*` → `ResourcePage` |
 | Filters | `@reui` | `@/components/reui/filters` |
 | Frame surface | `@reui` | `@/components/reui/frame` |
-| KPI | block [card-35](https://reui.io/preview/base/card-35) | `reui-kit/KpiStatGrid` |
+| KPI | block [stats-12](https://reui.io/preview/base/stats-12) | `reui-kit/KpiStatGrid` |
 | Semantic badge / alert | `@reui` | `@/components/reui/badge`, `@/components/reui/alert` |
 | Number / date / autocomplete / color / kanban | `@reui` | `@/components/reui/*` |
 
@@ -68,7 +68,7 @@ alwaysApply: true
 
 **Kit:** `ResourcePage`, `KpiStatGrid`, `OpsDashboard`, `KanbanBoard`, `DetailPanel`, `SettingsShell`
 
-**Blocks (reference):** `card-35`, `auth-13`, `app-shell-12`, `settings-16`, `settings-8`, `empty-state-12`, `form-7`, `data-grid-filtering-2`, `dashboard-1`, …
+**Blocks (reference):** `stats-12`, `card-35`, `auth-13`, `app-shell-12`, `settings-16`, `settings-8`, `empty-state-12`, `form-7`, `data-grid-filtering-2`, `dashboard-1`, …
 
 ## License
 
@@ -83,7 +83,7 @@ REUI_LICENSE_KEY=
 
 | Зона | Preview |
 |------|---------|
-| KPI | https://reui.io/preview/base/card-35 |
+| KPI | https://reui.io/preview/base/stats-12 |
 | List | https://reui.io/preview/base/data-grid-filtering-2 |
 | Settings | https://reui.io/preview/base/settings-16 |
 | Auth | https://reui.io/preview/base/auth-13 |