fix: 修复 transaction 表名与 Dexie 内置方法冲突（导出 JSON 与记账失效）

intern-log/src/views/LedgerView.vue

@@ -43,7 +43,11 @@ const title = computed(() => Number(monthRef.value.slice(0, 4)) + ' 年 ' + Numb
 
 async function load() {
   loading.value = true
-  rows.value = await listTransactionsBetween(monthStart.value, monthEnd.value)
+  try {
+    rows.value = await listTransactionsBetween(monthStart.value, monthEnd.value)
+  } catch (e) {
+    showToast('账目加载失败：' + (e instanceof Error ? e.message : String(e)))
+  }
   loading.value = false
 }
 onMounted(load)
@@ -124,15 +128,21 @@ async function submit() {
   }
   if (submitting.value) return
   submitting.value = true
-  await addTransaction({
-    type: fType.value,
-    category: fCategory.value,
-    amount: Math.round(v * 100),
-    date: fDate.value,
-    note: fNote.value.trim(),
-    reimbursable: fType.value === 'expense' && fReimb.value ? 1 : 0,
-    reimbursed: 0
-  })
+  try {
+    await addTransaction({
+      type: fType.value,
+      category: fCategory.value,
+      amount: Math.round(v * 100),
+      date: fDate.value,
+      note: fNote.value.trim(),
+      reimbursable: fType.value === 'expense' && fReimb.value ? 1 : 0,
+      reimbursed: 0
+    })
+  } catch (e) {
+    showToast('添加失败：' + (e instanceof Error ? e.message : String(e)))
+    submitting.value = false
+    return
+  }
   fAmount.value = ''
   fNote.value = ''
   fReimb.value = false