fix(v1.8.1): 按次显示已完成/总次数、隐藏已开通套餐、已结束订阅置灰置底

1) 按次计费显示口径
- 订阅卡片、列表、大屏 TOP 都从「剩 x / y 次」改为「已完成 x / y 次」
- 进度条改为按已用次数计算

2) 开通订阅下拉过滤
- 客户详情「开通订阅」下拉自动隐藏该客户已开通的套餐，延期只能走「追加」入口，避免新开叠加
- 若客户已开通全部套餐，下拉只剩占位项

3) 已结束订阅置灰置底
- 客户详情的订阅卡片按「进行中 → 已结束」排序，已结束排到最后
- 已结束卡片降低透明度、降低饱和度，鼠标悬停恢复部分可见

数据库：无变更
测试：
- 功能验证 5 项：按次文案、已开通套餐不在下拉、未开通仍可选、已结束卡片置灰、已结束排在最后
- 119 项验收回归全绿（8 条按次断言随之更新为新口径）
- 无头 Chrome 实拍客户详情页；版本号 1.8.1

scripts/acceptance.ps1

@@ -229,7 +229,7 @@ $r = Send $admin 'POST' "/customers/$custID/subscriptions" @{ package_id = '2';
 Check 'U-02' '开通按次订阅（10 次 / 有效期 T+10）' ((Has $r.Content '已开通')) "flash=$(Flash $r.Content)"
 $r = Send $admin 'GET' "/customers/$custID"
 $p2ID = (SubIDs $r.Content)[1]
-Check 'U-02b' '按次剩余 10/10 次' ((Has $r.Content '剩 10 / 10 次')) ""
+Check 'U-02b' '按次已完成 0/10 次' ((Has $r.Content '已完成 0 / 10 次')) ""
 
 $r = Send $admin 'POST' "/customers/$custID/subscriptions" @{ package_id = '1'; start_date = $today; days = '30' }
 Check 'U-03' '重复订阅被拦截' ((Has $r.Content '已订阅此套餐')) "flash=$(Flash $r.Content)"
@@ -239,7 +239,7 @@ $before = (Send $admin 'GET' "/customers/$custID").Content
 $r = Send $admin 'POST' '/packages' @{ name = '副本五次'; unit = 'count'; default_amount = '5'; price = '120'; color = '#41556B'; note = '无有效期'; sort_order = '3' }
 Check 'P-05' '新增套餐 D 成功' ((Has $r.Content '套餐已创建')) ""
 $after = (Send $admin 'GET' "/customers/$custID").Content
-Check 'P-05b' '新增套餐后既有订阅剩余量不变' ((Has $after '剩 30 天') -and (Has $after '剩 10 / 10 次')) ""
+Check 'P-05b' '新增套餐后既有订阅进度不变' ((Has $after '剩 30 天') -and (Has $after '已完成 0 / 10 次')) ""
 
 $r = Send $admin 'POST' "/customers/$custID/subscriptions" @{ package_id = '3'; start_date = $today; total_count = '5' }
 Check 'U-04' '开通第三个套餐（无有效期按次）' ((Has $r.Content '已开通')) "flash=$(Flash $r.Content)"
@@ -313,7 +313,7 @@ Check 'E-07' '已结束订阅不可追加' ((Has $r.Content '请先「重新启
 
 $r = Send $admin 'POST' "/subscriptions/$p2ID/extend" @{ add_count = '5'; note = '加购 5 次'; back = "/customers/$custID" }
 $d4 = (Send $admin 'GET' "/customers/$custID").Content
-Check 'E-08' '按次追加次数' ((Has $r.Content '已追加 5 次') -and (Has $d4 '剩 15 / 15 次')) "flash=$(Flash $r.Content)"
+Check 'E-08' '按次追加次数' ((Has $r.Content '已追加 5 次') -and (Has $d4 '已完成 0 / 15 次')) "flash=$(Flash $r.Content)"
 
 $r = Send $admin 'POST' "/subscriptions/$p2ID/extend" @{ add_count = '5'; new_end_opt = (D 30); note = '加次并延期'; back = "/customers/$custID" }
 $d5 = (Send $admin 'GET' "/customers/$custID").Content
@@ -365,22 +365,22 @@ Check 'K-02' '按日打卡不扣天数' ((Has $d '剩 30 天')) ""
 
 $r = Send $admin 'POST' "/subscriptions/$p2ID/checkin" @{ date = $today; status = 'done'; back = "/customers/$custID" }
 $d = (Send $admin 'GET' "/customers/$custID").Content
-Check 'K-03' '按次打卡扣 1 次' ((Has $d '剩 19 / 20 次')) ""
+Check 'K-03' '按次打卡扣 1 次' ((Has $d '已完成 1 / 20 次')) ""
 
 $r = Send $admin 'POST' "/subscriptions/$p2ID/checkin" @{ date = $today; status = 'done'; back = "/customers/$custID" }
 $d = (Send $admin 'GET' "/customers/$custID").Content
-Check 'K-04' '同日重复打卡不重复扣次' ((Has $d '剩 19 / 20 次')) ""
+Check 'K-04' '同日重复打卡不重复扣次' ((Has $d '已完成 1 / 20 次')) ""
 
 $r = Send $admin 'POST' "/subscriptions/$p2ID/checkin" @{ date = $today; status = 'skipped'; back = "/customers/$custID" }
 $d = (Send $admin 'GET' "/customers/$custID").Content
-Check 'K-05' '改为跳过返还 1 次' ((Has $d '剩 20 / 20 次')) ""
+Check 'K-05' '改为跳过返还 1 次' ((Has $d '已完成 0 / 20 次')) ""
 
 Send $admin 'POST' "/subscriptions/$p2ID/checkin" @{ date = $today; status = 'done'; back = "/customers/$custID" } | Out-Null
 $d = (Send $admin 'GET' "/customers/$custID").Content
 $ciID = (Dbtool @('scalar', $Db, "SELECT id FROM checkins WHERE sub_id=$p2ID AND service_date='$today'")).Trim()
 $r = Send $admin 'POST' "/checkins/$ciID/delete" @{ back = "/customers/$custID" }
 $d = (Send $admin 'GET' "/customers/$custID").Content
-Check 'K-06' '撤销打卡返还次数' ((Has $r.Content '已撤销') -and (Has $d '剩 20 / 20 次')) "flash=$(Flash $r.Content)"
+Check 'K-06' '撤销打卡返还次数' ((Has $r.Content '已撤销') -and (Has $d '已完成 0 / 20 次')) "flash=$(Flash $r.Content)"
 
 Dbtool @('exec', $Db, "UPDATE subscriptions SET used_count=total_count WHERE id=$p2ID") | Out-Null
 $r = Send $admin 'POST' "/subscriptions/$p2ID/checkin" @{ date = $today; status = 'done'; back = "/customers/$custID" }
@@ -395,7 +395,7 @@ Check 'K-11' '无有效期订阅卡片有「今日打卡」按钮' ((Has $r.Cont
 
 $r = Send $admin 'POST' "/subscriptions/$p3ID/checkin" @{ date = $today; status = 'done'; back = "/customers/$custID" }
 $d = (Send $admin 'GET' "/customers/$custID").Content
-Check 'K-09' '无有效期按次订阅可打卡扣次' ((Has $d '剩 4 / 5 次')) "flash=$(Flash $r.Content)"
+Check 'K-09' '无有效期按次订阅可打卡扣次' ((Has $d '已完成 1 / 5 次')) "flash=$(Flash $r.Content)"
 Check 'K-10' '打卡历史含日期/备注/操作人' ((Has $d '今日已打') -or (Has $d '完成')) ""
 
 Write-Host "`n=== 11. 日历（L） ===" -ForegroundColor Cyan