Add Advanced Search and filtering to Posts

- Add full-text search index on posts.title and posts.body
- Add search box with live filtering
- Add filter dropdowns for type, status, and site
- Add Clear Filters button
- Display post count in filter bar
- All filters work together (AND logic)

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

app/Livewire/Posts/Index.php

@@ -40,9 +40,39 @@ class Index extends Component
 
     public ?string $publishNotice = null;
 
+    public string $search = '';
+
+    public string $typeFilter = '';
+
+    public string $statusFilter = '';
+
+    public string $siteFilter = '';
+
     public function render()
     {
-        $posts = Post::with(['site', 'socialAccounts'])->orderByDesc('created_at')->get();
+        $query = Post::with(['site', 'socialAccounts']);
+
+        // Full-text search on title and body
+        if ($this->search) {
+            $query->whereFullText(['title', 'body'], $this->search);
+        }
+
+        // Filter by type
+        if ($this->typeFilter) {
+            $query->where('type', $this->typeFilter);
+        }
+
+        // Filter by status
+        if ($this->statusFilter) {
+            $query->where('status', $this->statusFilter);
+        }
+
+        // Filter by site
+        if ($this->siteFilter) {
+            $query->where('site_id', $this->siteFilter);
+        }
+
+        $posts = $query->orderByDesc('created_at')->get();
 
         return view('livewire.posts.index', [
             'posts' => $posts,
@@ -78,6 +108,14 @@ class Index extends Component
         $this->showForm = true;
     }
 
+    public function clearFilters(): void
+    {
+        $this->search = '';
+        $this->typeFilter = '';
+        $this->statusFilter = '';
+        $this->siteFilter = '';
+    }
+
     public function createFromTemplate(int $templateId): void
     {
         $template = Template::findOrFail($templateId);