feat(admin): 仪表盘重构、代理线路修复与后台体验优化

- 各角色仪表盘：KPI 可点击跳转、快捷入口、去重冗余区块，代理/站点降级 analytics
- 代理线路：创建玩家权限、侧栏搜索、深链 URL、档案保存与删除预检等修复
- 统一密码最短 6 位；代理模块表格/侧栏背景色一致（admin-table-inset）
- 报表、钱包、对账、开奖、结算、配置等模块结构与 i18n 同步更新

src/i18n/locales/en/settlementCenter.json

@@ -38,6 +38,7 @@
     "unsettledTickets": "Unsettled tickets",
     "openReportHint": "Open period: share/win-loss from in-period ledger; bill count updates after close.",
     "viewDetail": "View details",
+    "processBills": "Process bills",
     "close": "Close",
     "closeNow": "Close now",
     "hasOpen": "Period {{range}} is open. Close it before opening a new one.",
@@ -66,6 +67,7 @@
     "periods": "Periods",
     "bills": "Bills",
     "operations": "Payments & adjustments",
+    "aria": "Period views",
     "ledger": "Account ledger",
     "creditLedger": "Credit ledger",
     "playerBills": "Player bills",
@@ -213,7 +215,8 @@
   "actions": {
     "detail": "Detail",
     "viewBill": "View bill",
-    "billDetail": "Bill detail"
+    "billDetail": "Bill detail",
+    "billDetailWithId": "Bill #{{id}}"
   },
   "billDisplay": {
     "settlementFlow": "Who pays whom",
@@ -250,6 +253,7 @@
     "unpaidAwaitingPayment": "Record offline payment",
     "fullySettled": "Fully settled this period",
     "confirmHint": "Confirm the bill before recording payment.",
+    "advancedActions": "Adjust / bad debt",
     "recordReceiptFrom": "Record receipt ({{payer}} → {{payee}})",
     "recordPayoutTo": "Record payout ({{payer}} → {{payee}})",
     "rebateAllocationsHint": "How rebate is allocated across agent tiers.",
@@ -282,6 +286,12 @@
   },
   "billsPanel": {
     "intro": "Share bills after period close. Filter by type or status; open detail to confirm or record payment.",
+    "confirmOneTitle": "Confirm bill #{{id}}?",
+    "confirmOneDesc": "After confirm, record offline payment.",
+    "confirmOneBtn": "Confirm",
+    "confirmedOne": "Confirmed",
+    "confirmFailed": "Confirm failed",
+    "payBtn": "Pay",
     "hierarchyHint": "One period creates multiple bills: players pay their agent first; each agent keeps share profit and remits the rest upline. Gross win/loss may match across rows while settlement amounts step down.",
     "quickFilter": {
       "title": "Which settlement layer do you want to review",