refactor: use package.json for create-expert CLI metadata (#514)

* refactor: use package.json for create-expert CLI metadata

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: add empty changeset

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: FL4TLiN3

.changeset/fancy-months-lie.md

@@ -0,0 +1,2 @@
+---
+---

apps/create-expert/bin/cli.ts

@@ -6,6 +6,7 @@ import { startHandler } from "@perstack/tui"
 import { PROVIDER_ENV_MAP } from "@perstack/tui/provider-config"
 import { Command } from "commander"
 import TOML from "smol-toml"
+import packageJson from "../package.json" with { type: "json" }
 
 const tomlPath = new URL("../perstack.toml", import.meta.url)
 const config = parseWithFriendlyError(
@@ -14,8 +15,9 @@ const config = parseWithFriendlyError(
 )
 
 new Command()
-  .name("create-expert")
-  .description("Create and modify Perstack expert definitions")
+  .name(packageJson.name)
+  .description(packageJson.description)
+  .version(packageJson.version)
   .argument("[query]", "Description of the expert to create or modify")
   .option("--continue", "Continue the most recent job with new query")
   .option("--continue-job <jobId>", "Continue the specified job with new query")