feat(ad-audit): 新增看广告金币审计页

- /ad-audit 复算对账页:公式快照 + reward_video/feed 发奖明细 + 实发与复算一致性校验
- 侧栏新增「金币审计」导航
- types 增加 AdCoinAuditRow / AdCoinFormula / AdCoinAudit

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/(main)/ad-audit/page.tsx

@@ -0,0 +1,227 @@
+'use client';
+
+import { useCallback, useEffect, useState } from 'react';
+import type { ColumnsType } from 'antd/es/table';
+import {
+  Alert,
+  Button,
+  Card,
+  DatePicker,
+  InputNumber,
+  Select,
+  Space,
+  Table,
+  Tag,
+  Typography,
+  message,
+} from 'antd';
+import dayjs, { type Dayjs } from 'dayjs';
+import { api, errMsg } from '@/lib/api';
+import type { AdCoinAudit, AdCoinAuditRow } from '@/lib/types';
+
+const dt = (v: string) => new Date(v).toLocaleString('zh-CN');
+
+const SCENE_TAG: Record<string, { color: string; label: string }> = {
+  reward_video: { color: 'blue', label: '看视频' },
+  feed: { color: 'purple', label: '信息流' },
+};
+
+const STATUS_TAG: Record<string, string> = {
+  granted: 'green',
+  capped: 'orange',
+  ecpm_missing: 'red',
+};
+
+const fmtFactorRange = (a: number | null, b: number | null) => {
+  if (a == null) return '-';
+  return a === b || b == null ? String(a) : `${a}→${b}`;
+};
+
+const fmtIndexRange = (a: number | null, b: number | null) => {
+  if (a == null) return '-';
+  return a === b ? String(a) : `${a}–${b}`;
+};
+
+export default function AdAuditPage() {
+  const [date, setDate] = useState<Dayjs>(dayjs());
+  const [userId, setUserId] = useState<number | null>(null);
+  const [scene, setScene] = useState<string | undefined>();
+  const [limit, setLimit] = useState<number>(100);
+  const [data, setData] = useState<AdCoinAudit | null>(null);
+  const [loading, setLoading] = useState(false);
+
+  const load = useCallback(async () => {
+    setLoading(true);
+    try {
+      const res = await api.get<AdCoinAudit>('/admin/api/ad-coin-audit', {
+        params: {
+          date: date.format('YYYY-MM-DD'),
+          user_id: userId ?? undefined,
+          scene: scene ?? undefined,
+          limit,
+        },
+      });
+      setData(res.data);
+    } catch (e) {
+      message.error(errMsg(e));
+    } finally {
+      setLoading(false);
+    }
+  }, [date, userId, scene, limit]);
+
+  useEffect(() => {
+    load();
+    // 仅首次自动拉今天;之后由「查询」按钮触发
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const columns: ColumnsType<AdCoinAuditRow> = [
+    {
+      title: '场景',
+      dataIndex: 'scene',
+      width: 90,
+      render: (s: string) => {
+        const t = SCENE_TAG[s] ?? { color: 'default', label: s };
+        return <Tag color={t.color}>{t.label}</Tag>;
+      },
+    },
+    { title: '时间', dataIndex: 'created_at', render: dt, width: 175 },
+    { title: '用户', dataIndex: 'user_id', width: 70 },
+    {
+      title: '状态',
+      dataIndex: 'status',
+      width: 110,
+      render: (s: string) => <Tag color={STATUS_TAG[s] ?? 'default'}>{s}</Tag>,
+    },
+    { title: 'eCPM', dataIndex: 'ecpm', width: 90, render: (v: string | null) => v ?? '-' },
+    {
+      title: '因子1',
+      dataIndex: 'ecpm_factor',
+      width: 70,
+      render: (v: number | null) => v ?? '-',
+    },
+    { title: '份数', dataIndex: 'units', width: 60 },
+    {
+      title: 'LT累计条数',
+      key: 'lt_index',
+      width: 100,
+      render: (_: unknown, r: AdCoinAuditRow) => fmtIndexRange(r.lt_index_start, r.lt_index_end),
+    },
+    {
+      title: '因子2',
+      key: 'lt_factor',
+      width: 90,
+      render: (_: unknown, r: AdCoinAuditRow) => fmtFactorRange(r.lt_factor_start, r.lt_factor_end),
+    },
+    {
+      title: '应发金币',
+      dataIndex: 'expected_coin',
+      width: 100,
+      render: (v: number) => <b>{v}</b>,
+    },
+    { title: '实发金币', dataIndex: 'actual_coin', width: 100 },
+    {
+      title: '一致',
+      dataIndex: 'matched',
+      width: 70,
+      render: (m: boolean) =>
+        m ? <Tag color="green">✓</Tag> : <Tag color="red">✗ 不符</Tag>,
+    },
+  ];
+
+  return (
+    <div>
+      <h2>看广告金币审计</h2>
+      <Typography.Paragraph type="secondary" style={{ marginBottom: 16 }}>
+        把「看视频赚金币」和「比价信息流广告」的发奖记录,用与正式发奖相同的公式复算一遍,核对实发金币是否按公式计算。纯只读对账。
+      </Typography.Paragraph>
+
+      {data && (
+        <Card size="small" style={{ marginBottom: 16 }}>
+          <Typography.Text strong>金币公式:</Typography.Text>{' '}
+          <Typography.Text code>{data.formula.description}</Typography.Text>
+          <div style={{ marginTop: 8, color: '#666', fontSize: 13 }}>
+            <div>
+              eCPM 口径:{data.formula.ecpm_unit},计算时 ÷100 转元;金币:元 ={' '}
+              {data.formula.coin_per_yuan}:1;信息流每 {data.formula.feed_unit_seconds} 秒折 1 条。两个点位「LT累计条数」各自独立计数。
+            </div>
+            <div style={{ marginTop: 4 }}>
+              因子1(按 eCPM 元判档,阈值单位:元):
+              {data.formula.ecpm_factor_tiers
+                .map(([f, lo, hi]) => `${lo}~${hi ?? '∞'}元→${f}`)
+                .join('  |  ')}
+            </div>
+            <div style={{ marginTop: 4 }}>
+              因子2(LT 累计条数):
+              {data.formula.lt_factor_tiers
+                .map(([f, lo, hi]) => `${lo}${hi != null && hi !== lo ? `~${hi}` : ''}→${f}`)
+                .join('  |  ')}
+            </div>
+          </div>
+        </Card>
+      )}
+
+      <Space style={{ marginBottom: 16 }} wrap>
+        <DatePicker value={date} onChange={(d) => d && setDate(d)} allowClear={false} />
+        <InputNumber
+          placeholder="用户 ID(可空)"
+          value={userId ?? undefined}
+          onChange={(v) => setUserId(v ?? null)}
+          style={{ width: 140 }}
+        />
+        <Select
+          placeholder="场景(全部)"
+          value={scene}
+          onChange={setScene}
+          allowClear
+          style={{ width: 140 }}
+          options={[
+            { value: 'reward_video', label: '看视频' },
+            { value: 'feed', label: '信息流' },
+          ]}
+        />
+        <Select
+          value={limit}
+          onChange={setLimit}
+          style={{ width: 120 }}
+          options={[50, 100, 200, 500].map((n) => ({ value: n, label: `${n} 条` }))}
+        />
+        <Button type="primary" onClick={load} loading={loading}>
+          查询
+        </Button>
+      </Space>
+
+      {data && (
+        <div style={{ marginBottom: 12 }}>
+          {data.mismatch_count > 0 ? (
+            <Alert
+              type="error"
+              message={`共 ${data.total} 条,其中 ${data.mismatch_count} 条复算与实发不一致(✗)——公式可能未生效或发奖有问题`}
+            />
+          ) : (
+            <Alert
+              type="success"
+              message={`共 ${data.total} 条,全部按公式发放(无不一致)`}
+            />
+          )}
+        </div>
+      )}
+
+      <Table
+        rowKey={(r) => `${r.scene}-${r.record_id}`}
+        columns={columns}
+        dataSource={data?.items ?? []}
+        loading={loading}
+        pagination={false}
+        size="small"
+        scroll={{ x: 1100 }}
+        rowClassName={(r) => (r.matched ? '' : 'row-mismatch')}
+      />
+      <style jsx global>{`
+        .row-mismatch > td {
+          background: #fff1f0 !important;
+        }
+      `}</style>
+    </div>
+  );
+}

src/app/(main)/layout.tsx

@@ -5,6 +5,7 @@ import { usePathname, useRouter } from 'next/navigation';
 import {
   DashboardOutlined,
   FileSearchOutlined,
+  FundProjectionScreenOutlined,
   LogoutOutlined,
   MessageOutlined,
   MoneyCollectOutlined,
@@ -23,6 +24,7 @@ const MENU = [
   { key: '/users', icon: <UserOutlined />, label: '用户管理' },
   { key: '/withdraws', icon: <MoneyCollectOutlined />, label: '提现管理' },
   { key: '/feedbacks', icon: <MessageOutlined />, label: '反馈工单' },
+  { key: '/ad-audit', icon: <FundProjectionScreenOutlined />, label: '金币审计' },
   { key: '/config', icon: <SettingOutlined />, label: '系统配置' },
   { key: '/admins', icon: <TeamOutlined />, label: '管理员', superOnly: true },
   { key: '/audit-logs', icon: <FileSearchOutlined />, label: '审计日志' },

src/lib/types.ts

@@ -178,6 +178,41 @@ export interface AuditLog {
   created_at: string;
 }
 
+export interface AdCoinAuditRow {
+  scene: string; // reward_video / feed
+  record_id: number;
+  user_id: number;
+  created_at: string;
+  status: string; // granted / capped / ecpm_missing
+  ecpm: string | null;
+  ecpm_factor: number | null;
+  units: number;
+  lt_index_start: number | null;
+  lt_index_end: number | null;
+  lt_factor_start: number | null;
+  lt_factor_end: number | null;
+  expected_coin: number;
+  actual_coin: number;
+  matched: boolean;
+}
+
+export interface AdCoinFormula {
+  description: string;
+  coin_per_yuan: number;
+  ecpm_unit: string;
+  feed_unit_seconds: number;
+  ecpm_factor_tiers: [number, number, number | null][];
+  lt_factor_tiers: [number, number, number | null][];
+}
+
+export interface AdCoinAudit {
+  date: string;
+  formula: AdCoinFormula;
+  total: number;
+  mismatch_count: number;
+  items: AdCoinAuditRow[];
+}
+
 export interface DashboardOverview {
   users: {
     total: number;