feat(ui): apply global currency formatting to stats components

- Update UsageSummaryCards to use global currency store and formatting
- Update RevenueByModelTable to use global currency store and formatting
- Ensure consistent sat/msat/usd display across all dashboard metrics

ui/components/revenue-by-model-table.tsx

@@ -11,6 +11,10 @@ import {
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Progress } from '@/components/ui/progress';
 import { ModelRevenueData } from '@/lib/api/services/admin';
+import { useCurrencyStore } from '@/lib/stores/currency';
+import { useQuery } from '@tanstack/react-query';
+import { fetchBtcUsdPrice, btcToSatsRate } from '@/lib/exchange-rate';
+import { formatFromMsat, convertToMsat } from '@/lib/currency';
 
 interface RevenueByModelTableProps {
   models: ModelRevenueData[];
@@ -21,12 +25,24 @@ export function RevenueByModelTable({
   models,
   totalRevenue,
 }: RevenueByModelTableProps) {
+  const { displayUnit } = useCurrencyStore();
+  const { data: btcUsdPrice } = useQuery({
+    queryKey: ['btc-usd-price'],
+    queryFn: fetchBtcUsdPrice,
+    refetchInterval: 120_000,
+    staleTime: 60_000,
+  });
+  const usdPerSat = btcUsdPrice ? btcToSatsRate(btcUsdPrice) : null;
+
+  const formatAmount = (sats: number) =>
+    formatFromMsat(convertToMsat(sats, 'sat'), displayUnit, usdPerSat);
+
   return (
     <Card>
       <CardHeader>
         <CardTitle>Revenue by Model</CardTitle>
         <p className="text-sm text-muted-foreground">
-          Total Revenue: <span className="font-mono font-medium text-foreground">{totalRevenue.toLocaleString(undefined, { maximumFractionDigits: 2 })}</span> sats
+          Total Revenue: <span className="font-mono font-medium text-foreground">{formatAmount(totalRevenue)}</span>
         </p>
       </CardHeader>
       <CardContent>
@@ -37,10 +53,10 @@ export function RevenueByModelTable({
               <TableHead className="text-right">Requests</TableHead>
               <TableHead className="text-right">Successful</TableHead>
               <TableHead className="text-right">Failed</TableHead>
-              <TableHead className="text-right">Revenue (sats)</TableHead>
+              <TableHead className="text-right">Revenue</TableHead>
               <TableHead className="w-[100px]">Share</TableHead>
-              <TableHead className="text-right">Refunds (sats)</TableHead>
-              <TableHead className="text-right">Net Revenue (sats)</TableHead>
+              <TableHead className="text-right">Refunds</TableHead>
+              <TableHead className="text-right">Net Revenue</TableHead>
               <TableHead className="text-right">Avg/Request</TableHead>
             </TableRow>
           </TableHeader>
@@ -61,7 +77,7 @@ export function RevenueByModelTable({
                     <TableCell className="text-right text-green-600 font-mono">{model.successful}</TableCell>
                     <TableCell className="text-right text-red-600 font-mono">{model.failed}</TableCell>
                     <TableCell className="text-right font-mono">
-                      {model.revenue_sats.toLocaleString(undefined, { maximumFractionDigits: 2 })}
+                      {formatAmount(model.revenue_sats)}
                     </TableCell>
                     <TableCell>
                       <div className="flex items-center gap-2">
@@ -70,13 +86,13 @@ export function RevenueByModelTable({
                       </div>
                     </TableCell>
                     <TableCell className="text-right text-red-500 font-mono">
-                      {model.refunds_sats.toLocaleString(undefined, { maximumFractionDigits: 2 })}
+                      {formatAmount(model.refunds_sats)}
                     </TableCell>
                     <TableCell className="text-right font-semibold font-mono">
-                      {model.net_revenue_sats.toLocaleString(undefined, { maximumFractionDigits: 2 })}
+                      {formatAmount(model.net_revenue_sats)}
                     </TableCell>
                     <TableCell className="text-right text-muted-foreground font-mono">
-                      {model.avg_revenue_per_request.toLocaleString(undefined, { maximumFractionDigits: 3 })}
+                      {formatAmount(model.avg_revenue_per_request)}
                     </TableCell>
                   </TableRow>
                 );

ui/components/usage-summary-cards.tsx

@@ -14,12 +14,28 @@ import {
   TrendingDown,
   Coins,
 } from 'lucide-react';
+import { useCurrencyStore } from '@/lib/stores/currency';
+import { useQuery } from '@tanstack/react-query';
+import { fetchBtcUsdPrice, btcToSatsRate } from '@/lib/exchange-rate';
+import { formatFromMsat } from '@/lib/currency';
 
 interface UsageSummaryCardsProps {
   summary: UsageSummary;
 }
 
 export function UsageSummaryCards({ summary }: UsageSummaryCardsProps) {
+  const { displayUnit } = useCurrencyStore();
+  const { data: btcUsdPrice } = useQuery({
+    queryKey: ['btc-usd-price'],
+    queryFn: fetchBtcUsdPrice,
+    refetchInterval: 120_000,
+    staleTime: 60_000,
+  });
+  const usdPerSat = btcUsdPrice ? btcToSatsRate(btcUsdPrice) : null;
+
+  const formatAmount = (msat: number) =>
+    formatFromMsat(msat, displayUnit, usdPerSat);
+
   const cards = [
     {
       title: 'Total Requests',
@@ -34,32 +50,26 @@ export function UsageSummaryCards({ summary }: UsageSummaryCardsProps) {
       color: 'text-green-500',
     },
     {
-      title: 'Revenue (sats)',
-      value: summary.revenue_sats.toLocaleString(undefined, {
-        maximumFractionDigits: 2,
-      }),
+      title: 'Revenue',
+      value: formatAmount(summary.revenue_msats),
       icon: Coins,
       color: 'text-green-600',
     },
     {
-      title: 'Net Revenue (sats)',
-      value: summary.net_revenue_sats.toLocaleString(undefined, {
-        maximumFractionDigits: 2,
-      }),
+      title: 'Net Revenue',
+      value: formatAmount(summary.net_revenue_msats),
       icon: DollarSign,
       color: 'text-emerald-600',
     },
     {
-      title: 'Refunds (sats)',
-      value: summary.refunds_sats.toLocaleString(undefined, {
-        maximumFractionDigits: 2,
-      }),
+      title: 'Refunds',
+      value: formatAmount(summary.refunds_msats),
       icon: TrendingDown,
       color: 'text-red-500',
     },
     {
       title: 'Avg Revenue/Request',
-      value: `${(summary.avg_revenue_per_request_msats / 1000).toLocaleString(undefined, { maximumFractionDigits: 3 })} sats`,
+      value: formatAmount(summary.avg_revenue_per_request_msats),
       icon: CreditCard,
       color: 'text-cyan-500',
     },