feat: implement Story 2.1 — Owner/Manager Command Center Dashboard

- Rewrite DashboardController with cached role-scoped KPI aggregation
  (Cache::remember, 5-min TTL, Declaration::forUser scope)
- Create StatCard.vue component with CVA status variants and a11y
- Rewrite Dashboard.vue with 4-column KPI grid + urgent declarations table
- Add mise_en_demeure status to DeclarationStatus enum with transitions
- Exclude termine, mise_en_demeure, ferme from dashboard queries
- Set deadline proximity red threshold to ≤5 days
- Add abort(404) for non-member workspace access per architecture
- Fix null-safe client access for soft-deleted clients
- Fix hardcoded routes with Wayfinder type-safe imports
- Fix DashboardProps.stats type to allow null
- Add aria-pressed to StatCard for accessibility
- Install shadcn-vue table component (11 files)
- Add 11 Pest feature tests + 3 mise_en_demeure transition tests
- Fix DeclarationFactory eager workspace creation causing slug collisions
- 196 tests pass, 836 assertions, zero regressions

resources/js/components/ui/table/index.ts

@@ -0,0 +1,9 @@
+export { default as Table } from "./Table.vue"
+export { default as TableBody } from "./TableBody.vue"
+export { default as TableCaption } from "./TableCaption.vue"
+export { default as TableCell } from "./TableCell.vue"
+export { default as TableEmpty } from "./TableEmpty.vue"
+export { default as TableFooter } from "./TableFooter.vue"
+export { default as TableHead } from "./TableHead.vue"
+export { default as TableHeader } from "./TableHeader.vue"
+export { default as TableRow } from "./TableRow.vue"