refactor(install): prefer native plugin install across targets (#609)

Co-authored-by: John Cavanaugh <cavanaug@users.noreply.github.com>

src/index.ts

@@ -2,10 +2,10 @@
 import { defineCommand, runMain } from "citty"
 import packageJson from "../package.json"
 import convert from "./commands/convert"
+import cleanup from "./commands/cleanup"
 import install from "./commands/install"
 import listCommand from "./commands/list"
 import pluginPath from "./commands/plugin-path"
-import sync from "./commands/sync"
 
 const main = defineCommand({
   meta: {
@@ -14,11 +14,11 @@ const main = defineCommand({
     description: "Convert Claude Code plugins into other agent formats",
   },
   subCommands: {
+    cleanup: () => cleanup,
     convert: () => convert,
     install: () => install,
     list: () => listCommand,
     "plugin-path": () => pluginPath,
-    sync: () => sync,
   },
 })