Rebrand application from 'Beach Litter Mapping Platform' to 'Litter Scouts'

- Updated app name in all source files, documentation, and configuration
- Changed package names in package.json files
- Updated header, titles, and user-facing text
- Modified email templates and notification text
- Updated steering rules and spec documents

server/src/services/emailService.ts

@@ -88,7 +88,7 @@ ${message}
 ${relatedType && relatedId ? `View details: ${this.getDetailsUrl(relatedType, relatedId)}` : ''}
 
 ---
-Beach Litter Mapping Platform
+Litter Scouts
 To manage your notification preferences, visit your profile settings.
     `.trim();
 
@@ -122,7 +122,7 @@ To manage your notification preferences, visit your profile settings.
       ` : ''}
     </div>
     <div class="footer">
-      <p>Beach Litter Mapping Platform</p>
+      <p>Litter Scouts</p>
       <p>To manage your notification preferences, visit your profile settings.</p>
     </div>
   </div>
@@ -177,8 +177,8 @@ To manage your notification preferences, visit your profile settings.
       
       const success = await this.sendEmail({
         to: testEmail,
-        subject: 'Beach Litter Platform - Email Test',
-        text: 'This is a test email from the Beach Litter Mapping Platform. If you received this, email notifications are working correctly!',
+        subject: 'Litter Scouts - Email Test',
+        text: 'This is a test email from Litter Scouts. If you received this, email notifications are working correctly!',
       });
 
       return success;