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>

resources/views/filament/tenant/pages/faq.blade.php

@@ -7,13 +7,7 @@
     $totalHints = collect($grouped)->sum(fn ($g) => count($g));
     $videoEmbed = $this->getVideoEmbedUrl();
     $videoRaw = $this->getVideoRawUrl();
-    // Distinct accent color per area for card headers
-    $areaColors = [
-        'service' => '#0ea5e9',
-        'crm' => '#8b5cf6',
-        'depozit' => '#f59e0b',
-        'finante' => '#10b981',
-    ];
+    // Read accent color from AREAS registry (single source of truth)
 @endphp
 
 <style>
@@ -348,7 +342,7 @@
         @foreach ($grouped as $areaKey => $hints)
             @php
                 $area = $areas[$areaKey] ?? null;
-                $accent = $areaColors[$areaKey] ?? '#6b7280';
+                $accent = $area['color'] ?? '#6b7280';
             @endphp
             <div class="faq-card">
                 <div class="faq-card-hd" style="background:{{ $accent }};">