fix(app): ensure edit form initializes after async data loads

- switchTab('edit') now awaits fetchCardTypes and loadDetailMembership
  before calling initEditForm, fixing blank form fields for new cards

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/app/src/pages/admin/members.vue

@@ -430,21 +430,19 @@ async function loadDetailMembership(userId: string) {
   }
 }
 
-function switchTab(tab: 'detail' | 'edit') {
+async function switchTab(tab: 'detail' | 'edit') {
   activeTab.value = tab
   if (tab === 'edit') {
+    // Always fetch card types if not yet loaded
     if (!editCardTypes.value.length) {
-      adminStore.fetchCardTypes().then((types) => {
-        editCardTypes.value = types
-      })
+      await adminStore.fetchCardTypes()
+      editCardTypes.value = adminStore.cardTypes
     }
+    // Load membership if not yet loaded
     if (!detailMembership.value) {
-      loadDetailMembership(detailMember.value!.userId).then(() => {
-        initEditForm()
-      })
-    } else {
-      initEditForm()
+      await loadDetailMembership(detailMember.value!.userId)
     }
+    initEditForm()
   }
 }