Pin Minecraft 26.3 and add safe Orion managed deployment support

dashboard/src/components/managed-notice.tsx

@@ -0,0 +1,11 @@
+"use client";
+import { useApi } from "@/lib/api";
+
+export function ManagedNotice() {
+  const { data } = useApi<{ managed: boolean }>("/api/deployment", 0);
+  if (!data?.managed) return null;
+  return <div className="mb-4 rounded-xl border border-warn/40 bg-warn/10 px-4 py-3 text-sm">
+    Managed deployment: versions, mods and files are read-only here. Update the reviewed
+    deployment through Komodo. Console, player controls and backups remain available.
+  </div>;
+}