fix(ui): выровнять IconTile chrome и доступность

Перевести KPI и агентские тайлы на IconTile, skip-link и live regions.

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

.cursor/rules/frontend-ui-patterns.mdc

@@ -72,7 +72,7 @@ apps/web/src/components/  ← shared + domain + layout
 | Settings | PageShell + Frame + `SettingRow` (или `SettingsShell` при 2+ секциях) | — |
 | Dashboard KPI | `OpsDashboard` / `KpiStatGrid` | ReUI Frame [stats-12](https://reui.io/preview/base/stats-12) hybrid |
 | Quick Actions | `QuickActionGrid` (gated `show_quick_actions`) | Frame tiles + Badge «Перейти» |
-| Empty | `EmptyState` | `Empty` |
+| Empty | `EmptyState` | `Empty` + `IconStack` ([empty-state-14](https://reui.io/preview/base/empty-state-14)) |
 | Loading / Error | `QueryState` / kit skeletons | `Skeleton`, `Alert` |
 | Status | `StatusBadge` | ReUI `Badge` (`success`/`info`/`warning`) |
 | Create/Edit | `FormSheet` + `*-edit-sheet.tsx` | `Sheet`, `Field` |