prefactor(commands): Command Service Prefactor for Extensible Commands (#4511)

packages/cli/src/ui/commands/compressCommand.ts

@@ -5,12 +5,13 @@
  */
 
 import { HistoryItemCompression, MessageType } from '../types.js';
-import { SlashCommand } from './types.js';
+import { CommandKind, SlashCommand } from './types.js';
 
 export const compressCommand: SlashCommand = {
   name: 'compress',
-  altName: 'summarize',
+  altNames: ['summarize'],
   description: 'Compresses the context by replacing it with a summary.',
+  kind: CommandKind.BUILT_IN,
   action: async (context) => {
     const { ui } = context;
     if (ui.pendingItem) {