feat(wiki): add community image upload for wiki entities

Support uploading images for Pokemon, Items, and Habitats
Track upload history in new entity_image_uploads table
Update entity cards to display uploaded images and usage ribbons

docker-compose.yml

@@ -24,10 +24,14 @@ services:
       BACKEND_PORT: 3001
       FRONTEND_ORIGIN: http://localhost:3000
       APP_ORIGIN: http://localhost:3000
+      UPLOAD_DIR: /app/uploads
+      BACKEND_PUBLIC_ORIGIN: http://localhost:3001
       RESEND_API_KEY: ${RESEND_API_KEY:-}
       EMAIL_FROM: "${EMAIL_FROM:-Pokopia Wiki <onboarding@resend.dev>}"
     ports:
       - "3001:3001"
+    volumes:
+      - backend_uploads:/app/uploads
     depends_on:
       postgres:
         condition: service_healthy
@@ -45,3 +49,4 @@ services:
 
 volumes:
   postgres18_data:
+  backend_uploads: