fix: 对齐领券成功率分母口径 (#101)

## 改动说明
- 对齐后端领券成功率新口径
- 卡片提示展示成功次数、发起数、中途退出数和实际分母
- 中途退出已有结果显示真实单券成功率
- 完全无逐券事件显示 0.0%（退出前无结果）
- 只有 skipped 时显示 0.0%（无有效结果），并保留可点击的逐券明细入口
- 完成/失败记录缺埋点仍显示 -，避免误报为 0%
- 点位成功率维持原有独立口径

## 验证
- TypeScript 类型检查通过
- 生产构建通过
- 已覆盖部分成功、无事件、只有 skipped、非退出埋点缺失组合

依赖后端：WonderableAI/shaguabijia-app-server#213，请同步发布。

---------

Co-authored-by: linkeyu <798648091@qq.com>
Reviewed-on: #101
Co-authored-by: linkeyu <linkeyu@wonderable.ai>
Co-committed-by: linkeyu <linkeyu@wonderable.ai>

src/app/(main)/coupon-data/page.tsx

@@ -76,6 +76,7 @@ interface CouponDataRow {
   claimed_count: number | null;
   point_success_count: number | null;
   point_total_count: number | null;
+  point_event_count?: number;
   // 兼容旧后端的内嵌明细；新后端不再返回，改为点击后按 trace 加载。
   point_details?: CouponPointDetail[];
   trace_url: string | null;
@@ -145,15 +146,22 @@ function PointScorePopover({ row }: { row: CouponDataRow }) {
   const [loading, setLoading] = useState(false);
   const [loadError, setLoadError] = useState<string | null>(null);
 
-  if (row.point_success_count == null || row.point_total_count == null || row.point_total_count <= 0) {
+  const abandonedWithoutScoredResult =
+    row.status === 'abandoned' && row.point_success_count === 0 && row.point_total_count === 0;
+  if (
+    row.point_success_count == null ||
+    row.point_total_count == null ||
+    (row.point_total_count <= 0 && !abandonedWithoutScoredResult)
+  ) {
     return <Typography.Text type="secondary">-</Typography.Text>;
   }
   const score = `${row.point_success_count}/${row.point_total_count}`;
-  const scoreWithRate = `${score}（${(
-    row.point_success_count / row.point_total_count * 100
-  ).toFixed(1)}%）`;
+  const hasPointDetails = (row.point_event_count ?? 0) > 0;
+  const scoreWithRate = abandonedWithoutScoredResult
+    ? `0.0%（${hasPointDetails ? '无有效结果' : '退出前无结果'}）`
+    : `${score}（${(row.point_success_count / row.point_total_count * 100).toFixed(1)}%）`;
   const scoreColor =
-    row.point_success_count === row.point_total_count
+    row.point_total_count > 0 && row.point_success_count === row.point_total_count
       ? STATUS_TAG.completed.color
       : STATUS_TAG.abandoned.color;
   const loadDetails = async () => {
@@ -174,6 +182,14 @@ function PointScorePopover({ row }: { row: CouponDataRow }) {
     }
   };
 
+  if (abandonedWithoutScoredResult && !hasPointDetails) {
+    return (
+      <Tooltip title="本次在第一张券产生终态前中途退出，没有可计入成功/尝试的单券结果；按运营展示口径记为 0.0%，不虚构失败券数量。">
+        <Typography.Text type="warning">{scoreWithRate}</Typography.Text>
+      </Tooltip>
+    );
+  }
+
   return (
     <Popover
       trigger="click"

src/app/(main)/dashboard/page.tsx

@@ -550,6 +550,7 @@ export default function DashboardPage() {
   const couponPeriod = periodData?.coupon ?? null;
   const previousCouponPeriod = previousPeriodData?.coupon ?? null;
   const couponStartedDelta = percentDelta(couponPeriod?.started, previousCouponPeriod?.started);
+  const couponSuccessDenominator = couponPeriod?.success_denominator ?? null;
   const couponSuccessRateValue =
     couponPeriod?.success_rate == null ? '--' : (couponPeriod.success_rate * 100).toFixed(1);
   const couponSuccessRateDelta = pointDelta(couponPeriod?.success_rate, previousCouponPeriod?.success_rate);
@@ -875,9 +876,11 @@ export default function DashboardPage() {
             unit="%"
             delta={couponSuccessRateDelta.value}
             deltaTone={couponSuccessRateDelta.tone}
-            hint={`全部点位领成功的次数 / 领券发起数;本期 ${fmtInt(couponPeriod?.all_success)} / ${fmtInt(
-              couponPeriod?.started,
-            )} 次。点位成功口径含「今日已领过」。`}
+            hint={`全部点位领成功的次数 ÷（领券发起数－中途退出数）；本期 ${fmtInt(
+              couponPeriod?.all_success,
+            )} ÷（${fmtInt(couponPeriod?.started)}－${fmtInt(couponPeriod?.abandoned)}），分母为 ${fmtInt(
+              couponSuccessDenominator,
+            )}。中途退出不计入分母，点位成功口径含「今日已领过」。`}
           />
           <StatCard
             title="点位成功率"

src/lib/types.ts

@@ -707,6 +707,8 @@ export interface DashboardOverview {
     // 点位=一张券;成功口径 success+already_claimed;点位成功率分母=发起数×应领点位数(未跑到视为失败)。
     coupon?: {
       started: number;
+      abandoned: number;
+      success_denominator: number;
       all_success: number; // 全部点位领成功的完成场次数
       success_rate: number | null;
       point_success: number;