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/livewire/admin/ticket-monitor.blade.php

@@ -64,8 +64,12 @@
                     </div>
                     <div class="text-sm text-slate-700 mb-2">{{ $ticket->message }}</div>
                     @if ($ticket->bestArticle)
-                        <div class="text-sm">Article: #{{ $ticket->bestArticle->id }} | Confidence:
-                            {{ number_format((float) $ticket->confidence, 2) }}</div>
+                        <div class="flex flex-wrap items-center gap-2 text-sm">
+                            <span>Article: #{{ $ticket->bestArticle->id }}</span>
+                            @if ($ticket->confidence !== null)
+                                <x-admin.confidence-badge :confidence="$ticket->confidence" />
+                            @endif
+                        </div>
                         <div class="text-xs text-slate-500">{{ $ticket->explanation }}</div>
                     @endif
                     <a class="text-sm underline"