i18n 누락 키 추가 및 flutter 린트 적용

devfront/src/features/clients/ClientConsentsPage.tsx

@@ -116,7 +116,7 @@ function ClientConsentsPage() {
       }),
     ].join("\n");
 
-    const blob = new Blob(["\uFEFF" + csvContent], {
+    const blob = new Blob([`\uFEFF${csvContent}`], {
       type: "text/csv;charset=utf-8;",
     });
     const url = URL.createObjectURL(blob);

devfront/src/features/clients/ClientsPage.tsx

@@ -188,7 +188,10 @@ function ClientsPage() {
                 </Button>
                 <div className="hidden items-center gap-2 md:flex">
                   <Badge variant="muted">
-                    {t("ui.dev.clients.badge.tenant_selected", "테넌트: 선택됨")}
+                    {t(
+                      "ui.dev.clients.badge.tenant_selected",
+                      "테넌트: 선택됨",
+                    )}
                   </Badge>
                   <Badge variant="success">
                     {t("ui.dev.clients.badge.admin_session", "관리자 세션")}