feat: add Crestodian setup helper

src/cli/program/core-command-descriptors.ts

@@ -4,6 +4,11 @@ import type { NamedCommandDescriptor } from "./command-group-descriptors.js";
 export type CoreCliCommandDescriptor = NamedCommandDescriptor;
 
 const coreCliCommandCatalog = defineCommandDescriptorCatalog([
+  {
+    name: "crestodian",
+    description: "Open the ring-zero setup and repair helper",
+    hasSubcommands: false,
+  },
   {
     name: "setup",
     description: "Initialize local config and agent workspace",