[taskboard] migrate fleet console to nextjs

components/usage-view.tsx

@@ -0,0 +1,58 @@
+import { Badge } from "@/components/ui/badge";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+
+export function UsageView({
+  stats,
+}: {
+  stats: {
+    totalRequests: number;
+    totalTokens: number;
+    totalCost: number;
+    byAgent: Record<string, { requests: number; tokens: number; cost: number }>;
+  };
+}) {
+  return (
+    <div className="space-y-6">
+      <div className="grid gap-4 md:grid-cols-3">
+        <Card>
+          <CardHeader>
+            <CardTitle>Total Requests</CardTitle>
+          </CardHeader>
+          <CardContent className="text-3xl font-semibold">{stats.totalRequests}</CardContent>
+        </Card>
+        <Card>
+          <CardHeader>
+            <CardTitle>Total Tokens</CardTitle>
+          </CardHeader>
+          <CardContent className="text-3xl font-semibold">{stats.totalTokens}</CardContent>
+        </Card>
+        <Card>
+          <CardHeader>
+            <CardTitle>Estimated Cost</CardTitle>
+          </CardHeader>
+          <CardContent className="text-3xl font-semibold">${stats.totalCost.toFixed(2)}</CardContent>
+        </Card>
+      </div>
+      <Card>
+        <CardHeader>
+          <CardTitle>By Agent</CardTitle>
+          <CardDescription>Aggregated from the taskboard usage tracking table.</CardDescription>
+        </CardHeader>
+        <CardContent className="space-y-3">
+          {Object.entries(stats.byAgent).map(([agent, value]) => (
+            <div className="flex items-center justify-between rounded-xl border border-white/10 bg-slate-950/40 p-4" key={agent}>
+              <div>
+                <p className="font-medium">{agent}</p>
+                <p className="text-sm text-slate-400">{value.tokens} tokens</p>
+              </div>
+              <div className="flex gap-2">
+                <Badge variant="secondary">{value.requests} req</Badge>
+                <Badge variant="outline">${value.cost.toFixed(2)}</Badge>
+              </div>
+            </div>
+          ))}
+        </CardContent>
+      </Card>
+    </div>
+  );
+}