Enhance frontend documentation and UI components; update frontend-shadcn.mdc to include UI patterns reference; improve navigation structure in AppSidebar by categorizing items; refactor DataTableCard to support empty states with EmptyState component; implement ConfirmDialog for delete actions in DnsRecordsTable and GroupsPage; add search functionality in CertificatesPage and GroupsPage for better user experience; update ServiceEditSheet to utilize tabs for organization.

.cursor/rules/frontend-shadcn.mdc

@@ -8,11 +8,11 @@ alwaysApply: false
 
 **Источник истины — MCP shadcn + официальная документация.** Не выдумывать UI, не писать кастомный CSS, не обходить MCP и CLI.
 
-Monorepo layout — [`frontend-monorepo.mdc`](frontend-monorepo.mdc). MCP workflow — [`shadcn-mcp.mdc`](shadcn-mcp.mdc).
+Monorepo layout — [`frontend-monorepo.mdc`](frontend-monorepo.mdc). MCP workflow — [`shadcn-mcp.mdc`](shadcn-mcp.mdc). UI patterns — [`frontend-ui-patterns.mdc`](frontend-ui-patterns.mdc).
 
 | Документ | URL |
 |----------|-----|
-| **Components** | https://ui.shadcn.com/docs/components |
+| **Components (primary catalog)** | https://ui.shadcn.com/docs/components |
 | **Blocks** | https://ui.shadcn.com/blocks |
 | **Installation** | https://ui.shadcn.com/docs/installation |
 | **Monorepo** | https://ui.shadcn.com/docs/monorepo |
@@ -30,6 +30,28 @@ Monorepo layout — [`frontend-monorepo.mdc`](frontend-monorepo.mdc). MCP workfl
 
 **Новая страница** → сначала [Blocks](https://ui.shadcn.com/blocks), потом `pnpm dlx shadcn@latest add <block-id>`.
 
+## Docs workflow
+
+1. MCP `plugin-shadcn-shadcn` — search → examples → add command
+2. `pnpm dlx shadcn@latest docs <component>` — fetch URLs, сверить API
+3. Skill `.agents/skills/shadcn/SKILL.md` — critical rules
+4. Context7 — только TanStack / Recharts
+
+## Shared components (обязательно)
+
+| Component | Файл |
+|-----------|------|
+| `PageShell` | `page-shell.tsx` |
+| `PageHeader` | `page-header.tsx` |
+| `EmptyState` | `empty-state.tsx` |
+| `QueryState` | `query-state.tsx` |
+| `ConfirmDialog` | `confirm-dialog.tsx` |
+| `DataTableCard` | `data-table-card.tsx` |
+| `SectionCards` | `section-cards.tsx` |
+| `StatusBadge` | `status-badge.tsx` |
+
+**Overlay:** Sheet — forms; AlertDialog — destructive confirm.
+
 ## Шаг 1 — CLI (обязательно)
 
 ```bash
@@ -50,7 +72,7 @@ pnpm dlx shadcn@latest apply b2fA --only theme -y   # тема — ТОЛЬКО
 
 1. Установленный `@cfdm/ui/components/*`
 2. Block из registry (адаптация под TanStack Router)
-3. Shared проекта: `PageHeader`, `StatusBadge`, `ResourceList`, `DataTableCard`
+3. Shared проекта: `PageShell`, `PageHeader`, `EmptyState`, `QueryState`, `ConfirmDialog`, `DataTableCard`, `SectionCards`, `StatusBadge`
 4. Domain-обёртка — последний уровень кастомизации
 
 ### Запрещено