feat: add read-only traffic ledger tab

Allow admins to filter and page platform/user traffic ledger entries.

src/views/TrafficOpsView/TrafficOpsView.vue

@@ -141,7 +141,53 @@
         </div>
       </div>
 
-      <div v-show="tab === 'ledger'">账务流水占位</div>
+      <div v-show="tab === 'ledger'" class="ledger-panel">
+        <div class="asset-toolbar">
+          <div class="toolbar-group">
+            <t-select
+              v-model="ledgerAccountType"
+              :options="ledgerAccountTypeOptions"
+              placeholder="全部账户"
+              style="width: 140px"
+              @change="reloadLedger"
+            />
+          </div>
+          <div class="asset-search">
+            <t-input
+              v-model="ledgerAccountId"
+              clearable
+              placeholder="按账户ID筛选"
+              @keyup.enter="reloadLedger"
+              @clear="reloadLedger"
+            >
+              <template #prefix-icon><t-icon name="search" /></template>
+            </t-input>
+          </div>
+          <div class="page-actions">
+            <t-button shape="square" variant="outline" title="刷新" @click="loadLedger">
+              <svg><use href="#i-refresh" /></svg>
+            </t-button>
+          </div>
+        </div>
+
+        <div class="asset-table-wrap">
+          <t-table
+            row-key="id"
+            :data="ledgerList"
+            :columns="ledgerColumns"
+            empty="暂无流水"
+          />
+        </div>
+
+        <div class="table-footer">
+          <t-pagination
+            v-model:current="ledgerPageNum"
+            :total="ledgerTotal"
+            :page-size="ledgerPageSize"
+            @current-change="loadLedger"
+          />
+        </div>
+      </div>
     </div>
 
     <t-dialog
@@ -612,10 +658,65 @@ async function submitPurchase() {
   }
 }
 
+const ledgerList = ref([])
+const ledgerTotal = ref(0)
+const ledgerPageNum = ref(1)
+const ledgerPageSize = ref(10)
+const ledgerAccountType = ref('')
+const ledgerAccountId = ref('')
+
+const ledgerAccountTypeOptions = [
+  { label: '全部账户', value: '' },
+  { label: '用户', value: 'user' },
+  { label: '平台', value: 'platform' }
+]
+const ledgerColumns = [
+  { colKey: 'createdAt', title: '时间', width: '14%' },
+  { colKey: 'accountType', title: '账户类型', width: '8%' },
+  { colKey: 'accountId', title: '账户ID', width: '10%' },
+  { colKey: 'direction', title: '方向', width: '7%' },
+  { colKey: 'amountText', title: '金额', width: '12%' },
+  { colKey: 'balanceText', title: '余额前→后', width: '14%' },
+  { colKey: 'sourceType', title: '来源', width: '10%' },
+  { colKey: 'sourceId', title: '来源ID', width: '10%', ellipsis: true },
+  { colKey: 'idempotencyKey', title: '幂等键', width: '12%', ellipsis: true }
+]
+
+async function loadLedger() {
+  try {
+    const params = { pageNum: ledgerPageNum.value, pageSize: ledgerPageSize.value }
+    if (ledgerAccountType.value) params.accountType = ledgerAccountType.value
+    if (ledgerAccountId.value) params.accountId = Number(ledgerAccountId.value)
+    const page = await request.get(urls.ADMIN_TRAFFIC_LEDGER, { params })
+    ledgerTotal.value = page?.total || 0
+    ledgerList.value = (page?.records || []).map((r) => ({
+      id: String(r.id),
+      createdAt: fmtTime(r.createdAt),
+      accountType: r.accountType === 'user' ? '用户' : (r.accountType === 'platform' ? '平台' : (r.accountType || '—')),
+      accountId: String(r.accountId),
+      direction: r.direction === 'credit' ? '入账' : (r.direction === 'debit' ? '扣减' : r.direction),
+      amountText: `${bytesToGbText(r.amountBytes)} (${r.amountBytes})`,
+      balanceText: `${bytesToGbText(r.balanceBefore)} → ${bytesToGbText(r.balanceAfter)}`,
+      sourceType: r.sourceType || '—',
+      sourceId: r.sourceId || '—',
+      idempotencyKey: r.idempotencyKey || '—'
+    }))
+  } catch (e) {
+    ui.toast(e.message || '加载流水失败')
+  }
+}
+
+function reloadLedger() {
+  ledgerPageNum.value = 1
+  loadLedger()
+}
+
+
 
 watch(tab, (v) => {
   if (v === 'packages') loadPackages()
   if (v === 'purchases') loadPurchasesTab()
+  if (v === 'ledger') loadLedger()
 })
 
 onMounted(() => {
@@ -625,7 +726,8 @@ onMounted(() => {
 
 <style scoped>
 .packages-panel,
-.purchases-panel {
+.purchases-panel,
+.ledger-panel {
   flex: 1;
   display: flex;
   flex-direction: column;