Merge branch 's-choi' of https://gitea.it-college.co.jp/2026_09_5H_Spring_KIZAKI/Monegement into s-morimto

# Conflicts:
#	src/main/resources/templates/transaction_detail.html

src/main/java/com/example/demo/app/infra/entity/TestController6.java

@@ -1,5 +0,0 @@
-package com.example.demo.app.infra.entity;
-
-public class TestController6 {
-
-}

src/main/resources/templates/menu.html

@@ -138,6 +138,8 @@
 
 	    </div>
 
+
+
 	</div>
 	
 	<div class="card shadow-sm">

src/main/resources/templates/select_course.html

@@ -10,6 +10,7 @@
 
 <body style="padding-bottom: 120px">
 	<div th:replace="~{header :: header}"></div>
+
 	<h1 class="page-title">コース選択</h1>
 
 	<th:block th:if="${mode == 'change'}">