feat: Phase 5.2 - Global Search with Laravel Scout

- Install laravel/scout with database driver
- Add Searchable trait to Feature, Issue, Task, Inspection models
- Create GlobalSearch Livewire component with Blade view
- Configure scout.php for database driver + queued syncing
- Add SCOUT_DRIVER=database to .env.example

Tests: 101 passing (319 assertions)

app/Models/Issue.php

@@ -5,10 +5,11 @@ namespace App\Models;
 use App\Traits\LogsActivity;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Laravel\Scout\Searchable;
 
 class Issue extends Model
 {
-    use LogsActivity, SoftDeletes;
+    use LogsActivity, SoftDeletes, Searchable;
 
     const STATUSES = ['open', 'in_review', 'resolved', 'closed'];
 
@@ -141,4 +142,26 @@ class Issue extends Model
             default => '#6b7280',
         };
     }
+
+    public function toSearchableArray(): array
+    {
+        return [
+            'id' => $this->id,
+            'title' => $this->title,
+            'description' => $this->description,
+            'project_id' => $this->project_id,
+            'feature_id' => $this->feature_id,
+            'inspection_id' => $this->inspection_id,
+            'status' => $this->status,
+            'priority' => $this->priority,
+            'type' => $this->type,
+            'reported_by' => $this->reported_by,
+            'assigned_to' => $this->assigned_to,
+        ];
+    }
+
+    public function getScoutKey(): string
+    {
+        return (string) $this->id;
+    }
 }