Try to fix issue 4

rog/admin.py

@@ -35,6 +35,9 @@ from .services.csv_processor import EntryCSVProcessor
 class EntryAdmin(admin.ModelAdmin):
     list_display = ['team', 'event', 'category', 'date', 'is_active']
     
+    # change_list_templateの追加
+    change_list_template = 'admin/entry/change_list.html'  # この行を追加
+       
     def get_urls(self):
         from django.urls import path
         urls = super().get_urls()

rog/templates/admin/entry/change_list.html

@@ -0,0 +1,11 @@
+{% extends "admin/change_list.html" %}
+{% load i18n %}
+
+{% block object-tools-items %}
+    {{ block.super }}
+    <li>
+        <a href="{% url 'admin:entry_upload_csv' %}" class="addlink">
+            {% translate "Upload CSV" %}
+        </a>
+    </li>
+{% endblock %}

rog/templates/admin/entry/upload_csv.html

@@ -0,0 +1,17 @@
+{% extends "admin/base_site.html" %}
+{% load i18n static %}
+
+{% block content %}
+    <div>
+        <form action="." method="post" enctype="multipart/form-data">
+            {% csrf_token %}
+            <div>
+                <label for="csv_file">Choose CSV file:</label>
+                <input type="file" name="csv_file" required>
+            </div>
+            <div style="margin-top: 20px;">
+                <input type="submit" value="Upload CSV">
+            </div>
+        </form>
+    </div>
+{% endblock %}