[UX] #577 show VPD submenu below primary navigation

src/test/java/com/cloudhandson/vpdbackoffice/web/GuidedFlowTemplateTest.java

@@ -14,6 +14,7 @@ class GuidedFlowTemplateTest {
   void dashboardPrioritizesActionsAndKeepsDetailCollapsed() throws IOException {
     String html = template("dashboard.html");
     String layout = template("fragments/layout.html");
+    String javascript = Files.readString(Path.of("src/main/resources/static/js/app.js"));
 
     assertThat(html)
         .contains("th:replace=\"~{fragments/layout :: head('VPD 권한 운영')}\"")
@@ -31,7 +32,14 @@ class GuidedFlowTemplateTest {
         .contains("보호 정책 관리")
         .contains("접근 검증")
         .contains("지식자료 관리")
+        .contains("data-submenu-trigger")
+        .contains("data-submenu-bar")
+        .contains("data-submenu-panel")
         .doesNotContain("VPD Backoffice");
+    assertThat(javascript)
+        .contains("data-submenu-trigger")
+        .contains("data-submenu-panel")
+        .doesNotContain("closeAllMenuGroups");
   }
 
   @Test