修复：优化广告播放状态文案 (#65)

## 修改内容
- 广告播放状态“未满10秒”调整为“观看时长不足”
- 聚合播放状态“混合状态”调整为“部分完成”
- 保持后端状态码、接口结构和判定逻辑不变

## 影响范围
- 仅修改后台广告收益页的前端展示文案

## 验证
- npm run build

---------

Co-authored-by: linkeyu <798648091@qq.com>
Reviewed-on: #65
Co-authored-by: linkeyu <linkeyu@wonderable.ai>
Co-committed-by: linkeyu <linkeyu@wonderable.ai>

src/app/(main)/ad-revenue-report/page.tsx

@@ -76,7 +76,7 @@ const REWARD_STATUS_HINT: Record<string, string> = {
 
 const PLAYBACK_STATUS_TAG: Record<string, { color: string; label: string }> = {
   completed: { color: 'green', label: '已完成' },
-  too_short: { color: 'gold', label: '未满10秒' },
+  too_short: { color: 'gold', label: '观看时长不足' },
   closed_early: { color: 'default', label: '提前关闭' },
   unknown: { color: 'default', label: '未知' },
 };
@@ -159,7 +159,7 @@ function playbackStatusTag(row: AdRevenueRow) {
   const hint = entries
     .map(([status, count]) => `${PLAYBACK_STATUS_TAG[status].label} ${count} 条`)
     .join('；');
-  return { color: 'purple', label: '混合状态', hint: `${hint}。` };
+  return { color: 'purple', label: '部分完成', hint: `${hint}。` };
 }
 
 const fmtFactorRange = (a: number | null, b: number | null) => {