fix: polish traffic ops package form validation

Trim names and clarify create vs edit required-field errors.

src/views/TrafficOpsView/TrafficOpsView.vue

@@ -469,7 +469,14 @@ function openPkgEdit(row) {
 
 async function submitPackage() {
   pkgFormError.value = ''
-  if (!pkgForm.name || (!pkgEditingId.value && !pkgForm.code)) {
+  const name = String(pkgForm.name || '').trim()
+  const code = String(pkgForm.code || '').trim()
+  if (pkgEditingId.value) {
+    if (!name) {
+      pkgFormError.value = '请填写名称'
+      return
+    }
+  } else if (!code || !name) {
     pkgFormError.value = '请填写编码和名称'
     return
   }
@@ -482,7 +489,7 @@ async function submitPackage() {
     if (pkgEditingId.value) {
       // 后端 Update: price/validityDays 仅 >0 才写入；编辑时若用户未改就原样提交正值
       const payload = {
-        name: pkgForm.name,
+        name,
         amountBytes,
         sort: Number(pkgForm.sort || 0),
         status: pkgForm.status
@@ -494,8 +501,8 @@ async function submitPackage() {
       ui.toast('套餐已更新')
     } else {
       await request.post(urls.ADMIN_TRAFFIC_PACKAGES, {
-        code: pkgForm.code.trim(),
-        name: pkgForm.name.trim(),
+        code,
+        name,
         amountBytes,
         price: Number(pkgForm.price || 0),
         validityDays: Number(pkgForm.validityDays || 0),