feat(settlement): add idempotency keys to bill operations and enhance credit ledger filtering

Added idempotency_key parameter to settlement bill payment and adjustment API calls to prevent duplicate transactions. Enhanced credit ledger panel with expanded reason filters including bet_hold_release, game_settlement_win/loss/reversal, and settlement_confirm/payout. Updated localization files to include new game_settlement_reversal labels across English, Nepali, and Chinese. Improved credit ledger reason

src/modules/agents/agents-console.tsx

@@ -1011,7 +1011,7 @@ export function AgentsConsole(): React.ReactElement {
       {canViewAgents && err ? <p className="px-1 text-sm text-destructive">{err}</p> : null}
 
       {canViewAgents ? (
-        <div className="flex max-h-[calc(100dvh-14rem)] min-h-[28rem] flex-1 flex-col overflow-hidden rounded-2xl border border-border/70 bg-card shadow-sm lg:flex-row">
+        <div className="flex max-h-[calc(100dvh-14rem)] min-h-0 flex-1 flex-col overflow-hidden rounded-2xl border border-border/70 bg-card shadow-sm lg:flex-row">
           {showAgentSidebar ? (
           <AgentLineSidebar
             siteLabel={selectedSiteLabel}