feat: rename KOL Manager to Cathy's App across various files and update related placeholders

app/Models/RateCardProfile.php

@@ -23,7 +23,7 @@ class RateCardProfile extends Model
     public static function getSingleton(): self
     {
         return static::firstOrCreate([], [
-            'owner_name'   => config('app.name', 'KOL Manager'),
+            'owner_name'   => config('app.name', 'Cathy Page'),
             'bg_color'     => '#FFF8F0',
             'accent_color' => '#FFB7C5',
             'text_color'   => '#374151',

app/Services/Notifications/EmailNotifier.php

@@ -21,7 +21,7 @@ class EmailNotifier
 
         Mail::raw($combined, function ($mail) use ($toEmail, $setting): void {
             $mail->to($toEmail)
-                 ->subject("🐱 KOL Manager — {$setting->name} Notifications");
+                 ->subject("🐱 Cathy's App — {$setting->name} Notifications");
         });
     }
 

app/Services/Notifications/WahaNotifier.php

@@ -24,7 +24,7 @@ class WahaNotifier
     {
         $this->send(
             $setting,
-            "🐱 *KOL Manager — Test Notification*\n\nYour WhatsApp channel is configured correctly! 🎉"
+            "🐱 *Cathy's App — Test Notification*\n\nYour WhatsApp channel is configured correctly! 🎉"
         );
     }