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.

app/Services/AdminArticleService.php

@@ -9,10 +9,29 @@ use Illuminate\Support\Facades\DB;
 
 class AdminArticleService
 {
-    public function paginate(int $perPage = 10): LengthAwarePaginator
+    public function paginate(int $perPage = 10, ?string $search = null): LengthAwarePaginator
     {
+        $search = $search !== null ? trim($search) : '';
+
+        $numericSearch = ltrim($search, '#');
+
         return Article::query()
             ->with('quickReplies')
+            ->when($search !== '', function ($query) use ($numericSearch, $search): void {
+                $like = "%{$search}%";
+
+                $query->where(function ($query) use ($numericSearch, $like): void {
+                    $query
+                        ->where('title', 'ilike', $like)
+                        ->orWhere('content', 'ilike', $like)
+                        ->orWhere('source_url', 'ilike', $like)
+                        ->orWhere('source_article_id', 'ilike', $like);
+
+                    if (ctype_digit($numericSearch)) {
+                        $query->orWhere('id', (int) $numericSearch);
+                    }
+                });
+            })
             ->latest()
             ->paginate($perPage);
     }
@@ -34,6 +53,25 @@ class AdminArticleService
         return (bool) Article::query()->whereKey($articleId)->delete();
     }
 
+    public function findById(int $articleId): ?Article
+    {
+        return Article::query()->find($articleId);
+    }
+
+    public function updateContent(int $articleId, string $title, string $content): bool
+    {
+        $article = Article::query()->find($articleId);
+        if ($article === null) {
+            return false;
+        }
+
+        $article->title = trim($title);
+        $article->content = trim($content);
+        $article->save();
+
+        return true;
+    }
+
     public function updateMetadata(int $articleId, ?string $note, array $allowedActions, array $quickReplyIds = []): bool
     {
         $article = Article::query()->find($articleId);