Fix: Excel upload logic, field mapping for servers, and date format synchronization

src/components/Modal/UploadPreviewModal.ts

@@ -210,12 +210,22 @@ async function confirmUpload() {
       else if (tab === '도메인') endpoint = `${API_BASE}/api/ops/domain/batch`;
 
       if (endpoint) {
-        const response = await fetch(endpoint, {
-          method: 'POST',
-          headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify(data)
-        });
-        if (response.ok) successCount++;
+        try {
+          const response = await fetch(endpoint, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify(data)
+          });
+          if (response.ok) {
+            successCount++;
+          } else {
+            const errRes = await response.json();
+            throw new Error(`[${tab}] ${errRes.error || '저장 실패'}`);
+          }
+        } catch (e: any) {
+          alert(`카테고리 '${tab}' 저장 중 오류: ${e.message}`);
+          throw e; // Stop processing further tabs
+        }
       }
     }
 
@@ -228,7 +238,7 @@ async function confirmUpload() {
     }
   } catch (err) {
     console.error(err);
-    alert('업로드 중 오류가 발생했습니다.');
+    // 상세 에러는 내부 catch에서 이미 alert으로 띄움
   } finally {
     if (confirmBtn) {
       confirmBtn.disabled = false;
@@ -274,7 +284,7 @@ async function generateBulkCodes() {
     for (const prefix in groups) {
       const rows = groups[prefix];
       // Fetch current next code for this prefix
-      const res = await fetch(`http://172.16.40.100:3000/api/generate-asset-code?prefix=${prefix}`);
+      const res = await fetch(`http://${location.hostname}:3000/api/generate-asset-code?prefix=${prefix}`);
       const result = await res.json();
       if (result.nextCode) {
         let baseNum = parseInt(result.nextCode.replace(prefix, ''));