feat: Enhance Support Reply Service with tone instructions and article details

- Added tone instruction retrieval to SupportReplyService.
- Improved user feedback when no relevant article is found.
- Included article URL and tone instruction in LLM prompt.
- Updated response format to include source information.
- Enhanced article management UI with search functionality and editing capabilities.
- Introduced a new API endpoint for nearest articles based on vector search.
- Added confidence badge component to display article confidence levels.
- Implemented tests for article searching, editing, and nearest article API.
- Removed obsolete .htaccess file.

resources/views/components/admin/confidence-badge.blade.php

@@ -0,0 +1,25 @@
+@props([
+    'confidence',
+    'threshold' => \App\Services\KnowledgeGapService::CONFIDENCE_THRESHOLD,
+])
+
+@php
+    $score = (float) $confidence;
+    $passes = $score >= (float) $threshold;
+@endphp
+
+<span @class([
+    'inline-flex items-center gap-1 rounded px-2 py-0.5 text-xs font-medium',
+    'bg-green-100 text-green-800' => $passes,
+    'bg-amber-100 text-amber-900' => ! $passes,
+])>
+    <span @class([
+        'h-2 w-2 rounded-full',
+        'bg-green-600' => $passes,
+        'bg-amber-600' => ! $passes,
+    ])></span>
+    Confidence {{ number_format($score, 2) }}
+    <span class="text-[11px] opacity-80">
+        {{ $passes ? 'haalt drempel' : 'onder drempel' }} {{ number_format((float) $threshold, 2) }}
+    </span>
+</span>

resources/views/components/layouts/admin.blade.php

@@ -17,6 +17,7 @@
                 <nav class="flex gap-3 text-sm">
                     <a href="{{ route('admin.dashboard') }}" class="hover:underline">Dashboard</a>
                     <a href="{{ route('admin.articles') }}" class="hover:underline">Articles</a>
+                    <a href="{{ route('admin.knowledge-search-demo') }}" class="hover:underline">KB demo</a>
                     <a href="{{ route('admin.quick-replies') }}" class="hover:underline">Snelantwoorden</a>
                     <a href="{{ route('admin.tickets') }}" class="hover:underline">Tickets</a>
                     <a href="{{ route('admin.process') }}" class="hover:underline">Proces</a>