feat(settlement): 优化结算中心待处理视图与账单显示

- 新增接口参数 agent_scope 支持筛选直接代理
- 结算中心导航新增“待处理”视图，并设置默认视图为“待处理”
- 结算中心页面新增待处理账单工作台，支持待确认、待收付和异常账单分类显示
- 调整账单状态文本，明确“已确认”改为“待收付”，“部分结清”改为“部分收付”
- 优化账单明细中的代理结算说明和收益展示文案
- 账单详情页添加当前账单主要操作提示区，提示确认、登记付款或复核状态
- 结算中心流水模块及多语言资源关于“账务流水”统一改为“流水审计”
- 优化结算主面板中待处理模式与全部模式的筛选和分页逻辑
- 结合管理员权限控制结算中心可见站点列表，增强集成站点加载逻辑

src/i18n/locales/en/settlementCenter.json

@@ -65,10 +65,13 @@
   },
   "nav": {
     "periods": "Periods",
+    "pendingWorkbench": "To do",
+    "allBills": "All bills",
     "bills": "Bills",
     "operations": "Payments & adjustments",
     "aria": "Period views",
     "ledger": "Account ledger",
+    "ledgerAudit": "Ledger audit",
     "creditLedger": "Credit ledger",
     "playerBills": "Player bills",
     "agentBills": "Agent bills",
@@ -194,9 +197,9 @@
   },
   "billStatus": {
     "pending_confirm": "Pending confirm",
-    "confirmed": "Confirmed",
-    "partial_paid": "Partial paid",
-    "settled": "Settled",
+    "confirmed": "Awaiting payment",
+    "partial_paid": "Partial payment",
+    "settled": "Fully settled",
     "overdue": "Overdue",
     "reversed": "Reversed"
   },
@@ -229,26 +232,34 @@
     "payerLabel": "Payer",
     "payeeLabel": "Payee",
     "playerBreakdownIntro": "Players settle only with their direct agent: net = win/loss − rebate.",
-    "agentBreakdownIntro": "Agents settle only with their upline: net = team net − downline share − own share.",
+    "agentBreakdownIntro": "Start with this period's team win/loss, deduct player rebates and retained shares, then settle the remaining amount with the upline.",
     "playerGross": "Game win/loss",
     "playerLostHint": "Player lost; owes agent",
     "playerWonHint": "Player won; agent owes player",
     "playerNet": "Player net payable",
     "playerNetReceive": "Agent pays player",
-    "teamGross": "Team game win/loss",
-    "teamGrossHint": "Includes this agent and all downline players",
+    "teamGross": "Team win/loss this period",
+    "teamGrossHint": "Total for this agent and downline players in this period",
     "teamGrossShort": "Team",
     "playerGrossShort": "Player",
-    "teamRebate": "Team rebate",
-    "teamNet": "Team net",
+    "teamRebate": "Deduct player rebates",
+    "teamNet": "Profit available to split",
     "rebate": "Rebate",
-    "agentShareKeep": "Share kept at this tier",
-    "agentShareKeepHint": "Profit retained at this tier by share ratio",
-    "agentDownlineShare": "Downline share",
-    "agentDownlineShareHint": "Profit retained by downline agents (see breakdown below)",
+    "agentShareKeep": "This tier keeps",
+    "agentShareKeepHint": "Amount retained by this tier under the agreed share",
+    "agentDownlineShare": "Downline agents keep",
+    "agentDownlineShareHint": "Amount retained by downline agents first (see breakdown below)",
     "agentDownlineShareItem": "{{agent}} kept",
-    "agentNet": "Pay {{counterparty}}",
-    "agentNetReceive": "{{counterparty}} pays this tier",
+    "agentNet": "Remit to {{counterparty}}",
+    "agentNetReceive": "{{counterparty}} owes this tier",
+    "actionPendingConfirmTitle": "Confirm this bill next",
+    "actionPendingConfirmDesc": "Confirm the amount and parties, then the bill moves to awaiting payment.",
+    "actionAwaitingPaymentTitle": "Record payment next",
+    "actionAwaitingPaymentDesc": "Record offline payment according to the payer/payee direction. Partial payments are allowed.",
+    "actionSettledTitle": "This bill is fully settled",
+    "actionSettledDesc": "Review the breakdown and payment history below if needed.",
+    "actionReviewTitle": "Review this bill status",
+    "actionReviewDesc": "Use adjustment, reversal, or bad debt actions if the amount or direction is wrong.",
     "billOwner": "Bill owner",
     "billCounterparty": "Counterparty",
     "unpaidPendingConfirm": "Confirm the bill before recording payment",
@@ -340,6 +351,15 @@
     "clientFilterHint": "Owner filter: showing {{shown}} / {{total}}",
     "emptyFiltered": "No bills match the filter. Try All statuses or reset.",
     "emptyClosed": "Period closed but no bills. Often no settled credit tickets in range.",
+    "workbenchEmpty": "No bills need action in this period. Use All bills for settled or historical bills.",
+    "workbench": {
+      "pendingTitle": "Bills pending confirm",
+      "pendingHint": "Confirm the amount and parties first; confirmed bills move to awaiting payment.",
+      "awaitingTitle": "Bills awaiting payment",
+      "awaitingHint": "Record offline payment by payer/payee direction. Bills close when fully paid.",
+      "exceptionTitle": "Exceptions",
+      "exceptionHint": "Review adjustment, reversal, and bad debt records here."
+    },
     "rowHint": {
       "playerOwner": "Player owner",
       "agentOwner": "Agent owner",