chore: import upstream snapshot with attribution

apps/webapp/app/routes/admin.api.v1.llm-models.reload.ts

@@ -0,0 +1,15 @@
+import { type ActionFunctionArgs, json } from "@remix-run/server-runtime";
+import { requireAdminApiRequest } from "~/services/personalAccessToken.server";
+import { llmPricingRegistry } from "~/v3/llmPricingRegistry.server";
+
+export async function action({ request }: ActionFunctionArgs) {
+  await requireAdminApiRequest(request);
+
+  if (!llmPricingRegistry) {
+    return json({ error: "LLM cost tracking is disabled" }, { status: 400 });
+  }
+
+  await llmPricingRegistry.reload();
+
+  return json({ success: true, message: "LLM pricing registry reloaded" });
+}