feat(ui): replace route-based provider flow with modal wizard (#10156)

ui/components/providers/wizard/steps/launch-step.tsx

@@ -0,0 +1,15 @@
+"use client";
+
+import { CheckCircle2 } from "lucide-react";
+
+export function LaunchStep() {
+  return (
+    <div className="flex min-h-[320px] flex-col items-center justify-center gap-4 text-center">
+      <CheckCircle2 className="text-success size-12" />
+      <h3 className="text-xl font-semibold">Provider connected successfully</h3>
+      <p className="text-muted-foreground text-sm">
+        Continue with the action button to go to scans.
+      </p>
+    </div>
+  );
+}