fix: 账目加载错误常驻显示（含完整堆栈）便于定位

intern-log/src/views/LedgerView.vue

@@ -25,6 +25,7 @@ const fDate = ref(todayStr())
 const fNote = ref('')
 const fReimb = ref(false)
 const fError = ref('')
+const loadError = ref('')
 const submitting = ref(false)
 
 const dialogOpen = ref(false)
@@ -45,8 +46,10 @@ async function load() {
   loading.value = true
   try {
     rows.value = await listTransactionsBetween(monthStart.value, monthEnd.value)
+    loadError.value = ''
   } catch (e) {
-    showToast('账目加载失败：' + (e instanceof Error ? e.message : String(e)))
+    loadError.value = '账目加载失败：' + (e instanceof Error ? (e.stack || e.message) : String(e))
+    showToast('账目加载失败')
   }
   loading.value = false
 }
@@ -273,6 +276,11 @@ async function confirmDelete() {
       </div>
     </div>
 
+    <div v-if="loadError" class="card section">
+      <div class="form-error">{{ loadError }}</div>
+      <div class="muted loc-note">请将上方完整错误文字发送给开发者</div>
+    </div>
+
     <div class="card table-card">
       <table class="tx-table">
         <thead>