diff --git a/dap-gateway/src/main/resources/static/admin/scaffold.html b/dap-gateway/src/main/resources/static/admin/scaffold.html
index 8db12a4c..f2bae4cb 100644
--- a/dap-gateway/src/main/resources/static/admin/scaffold.html
+++ b/dap-gateway/src/main/resources/static/admin/scaffold.html
@@ -1660,25 +1660,42 @@
     }
 
     document.getElementById('toolForm').addEventListener('submit', function(e) {
-        if (!groupedTools.length) return;
-        e.preventDefault();
-        e.stopImmediatePropagation();
-        try {
-            const useCaseName = document.getElementById('toolGroupUseCaseName').value.trim();
-            if (!/^[A-Z][A-Za-z0-9]*$/.test(useCaseName)) throw new Error('UseCase 이름은 PascalCase로 입력해주세요. 예: Customer');
-            const current = currentToolDefinition();
-            const tools = groupedTools.some(item => item.methodName === current.methodName) ? groupedTools : [...groupedTools, current];
-            const data = Object.fromEntries(new FormData(this).entries());
-            fetch('/api/v1/scaffold/tool-group', {
-                method: 'POST', headers: {'Content-Type': 'application/json'},
-                body: JSON.stringify({useCaseName, moduleName: data.moduleName, author: data.author, date: data.date, tools})
-            }).then(response => response.text()).then(result => {
-                const resultBox = document.getElementById('resultBox');
-                resultBox.style.display = 'block'; resultBox.className = result.startsWith('Error:') ? 'error' : 'success';
-                resultBox.textContent = result;
-            });
-        } catch (error) {
-            alert(error.message);
+        const useCaseName = document.getElementById('toolGroupUseCaseName').value.trim();
+        if (useCaseName) {
+            e.preventDefault();
+            e.stopImmediatePropagation();
+            if (!/^[A-Z][A-Za-z0-9]*$/.test(useCaseName)) {
+                alert('UseCase 이름은 PascalCase로 입력해주세요. 예: Customer');
+                return;
+            }
+            try {
+                const current = currentToolDefinition();
+                const tools = groupedTools.some(item => item.methodName === current.methodName) ? groupedTools : [...groupedTools, current];
+                const data = Object.fromEntries(new FormData(this).entries());
+                
+                const btn = this.querySelector('button[type="submit"]');
+                const originalText = btn.innerHTML;
+                btn.innerHTML = '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span> 처리중...';
+                btn.disabled = true;
+
+                fetch('/api/v1/scaffold/tool-group', {
+                    method: 'POST', headers: {'Content-Type': 'application/json'},
+                    body: JSON.stringify({useCaseName, moduleName: data.moduleName, author: data.author, date: data.date, tools})
+                }).then(response => response.text()).then(result => {
+                    const resultBox = document.getElementById('resultBox');
+                    resultBox.style.display = 'block'; resultBox.className = result.startsWith('Error:') ? 'error' : 'success';
+                    resultBox.textContent = result + (result.startsWith('Error:') ? '' : "\n\n> Note: Please sync Gradle in your IDE to reflect source code generation.");
+                }).catch(error => {
+                    const resultBox = document.getElementById('resultBox');
+                    resultBox.style.display = 'block'; resultBox.className = 'error';
+                    resultBox.textContent = "Network error: " + error;
+                }).finally(() => {
+                    btn.innerHTML = originalText;
+                    btn.disabled = false;
+                });
+            } catch (error) {
+                alert(error.message);
+            }
         }
     });