refactor: rename project from wedding-photo-sharing to PicPeak

- Update Docker image names and network configurations
- Rename package.json project names to picpeak-backend/frontend
- Update CI/CD configurations (Drone CI and GitHub Actions)
- Update documentation and setup scripts
- Update application branding in source code
- Change default database name to picpeak
- Update PM2 ecosystem config

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/components/admin/AdminSidebar.tsx

@@ -49,11 +49,10 @@ export const AdminSidebar: React.FC<AdminSidebarProps> = ({ isOpen, onClose }) =
       }`}
     >
       <div className="flex flex-col h-screen lg:h-full">
-        {/* Logo/Brand */}
+        {/* Brand */}
         <div className="flex items-center justify-between h-16 px-6 border-b border-neutral-200 flex-shrink-0">
           <div className="flex items-center">
-            <img src="/picpeak-kamera-transparent.png" alt="Camera" className="w-8 h-8 object-contain" />
-            <span className="ml-2 text-xl font-bold text-neutral-900">{t('admin.title')}</span>
+            <span className="text-xl font-bold text-neutral-900">{t('admin.title')}</span>
           </div>
           <button
             onClick={onClose}