feat(nav): FAQ shows all 8 sections + drag-drop reorder in Settings

FAQ sections were only 4 (service/crm/depozit/finante) even though
the sidebar has 8. Added the missing 4 to Hints::AREAS with proper
icons + accent colors:
  📊 Analiză (pink)   📣 Marketing (orange)
  🛒 Magazin (cyan)   ⚙️ Admin (slate)

Retagged 15 hints that were shoved into wrong areas as a workaround
(admin.*/marketing.*/shop.*/analytics.* now use the matching bucket).
FAQ blade reads accent color from the AREAS registry instead of a
hardcoded local map.

Also added per-tenant navigation group ordering:
- Settings → new "Ordine meniu lateral" section with a Filament
  Repeater that has reorderable buttons (drag/arrow buttons) but no
  add/delete (fixed list of 8 groups)
- Persisted to settings.nav_group_order as an array of keys
- New ConfigureNavGroups middleware (runs after ResolveTenant on
  the web stack) reads the current tenant's order and calls
  $panel->navigationGroups([...]) so the sidebar renders in that
  order per-request

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bootstrap/app.php

@@ -31,6 +31,7 @@ return Application::configure(basePath: dirname(__DIR__))
             \App\Http\Middleware\ResolveTenant::class,
             \App\Http\Middleware\CheckTenantStatus::class,
             \App\Http\Middleware\SetLocale::class,
+            \App\Http\Middleware\ConfigureNavGroups::class,
         ]);
 
         // API routes also need tenant resolution by host so the same