Add profile image system with MinIO storage

- Implement ProfileAvatar component for user avatars
- Integrate MinIO for profile image storage and management
- Add profile image fields to Member type definition
- Create server utilities and API endpoints for image handling
- Replace basic avatar icon with new ProfileAvatar in dashboard
- Update sharp dependency to v0.34.3

utils/types.ts

@@ -135,6 +135,11 @@ export interface Member {
   registration_date?: string; // New field for tracking registration date
   portal_group?: 'user' | 'board' | 'admin'; // Portal access level group
   
+  // Profile Image Fields
+  profile_image_url?: string; // MinIO path: profile-images/{member_id}/profile.jpg
+  profile_image_updated_at?: string; // ISO timestamp for cache invalidation
+  profile_image_original_name?: string; // Original filename for audit trail
+  
   // Computed fields (added by processing)
   FullName?: string;
   FormattedPhone?: string;