feat(ui): add DeploymentCard component

ui/litellm-dashboard/src/components/routing_groups/DeploymentCard.tsx

@@ -0,0 +1,56 @@
+"use client";
+import React from "react";
+
+interface DeploymentCardProps {
+  provider: string;
+  displayName: string;
+  providerColor: string;
+  label: string;          // "Priority 1" or "Weight 83%"
+  avgLatencyMs: number;
+  percentage: number;     // 0-100
+  requestCount: number;
+  width?: number;         // px, default 220
+}
+
+export default function DeploymentCard({
+  provider,
+  displayName,
+  providerColor,
+  label,
+  avgLatencyMs,
+  percentage,
+  requestCount,
+  width = 220,
+}: DeploymentCardProps) {
+  const initial = displayName.charAt(0).toUpperCase();
+  return (
+    <div
+      style={{ width, borderColor: providerColor + "33" }}
+      className="flex items-center gap-3 rounded-xl border bg-[#1f2937] px-4 py-3"
+    >
+      {/* Provider icon */}
+      <div
+        style={{ backgroundColor: providerColor + "33", color: providerColor }}
+        className="flex h-10 w-10 flex-shrink-0 items-center justify-center rounded-lg text-sm font-bold"
+      >
+        {initial}
+      </div>
+
+      {/* Name + label */}
+      <div className="min-w-0 flex-1">
+        <div className="truncate text-sm font-semibold text-white">{displayName}</div>
+        <div className="text-xs text-gray-400">
+          {label} · {avgLatencyMs > 0 ? `${Math.round(avgLatencyMs)}ms avg` : "—"}
+        </div>
+      </div>
+
+      {/* Percentage + req count */}
+      <div className="flex flex-shrink-0 flex-col items-end">
+        <span style={{ color: providerColor }} className="text-lg font-bold leading-none">
+          {Math.round(percentage)}%
+        </span>
+        <span className="text-xs text-gray-500">{requestCount} req</span>
+      </div>
+    </div>
+  );
+}