Improvements to suggestions & slash commands (#344)

Co-authored-by: N. Taylor Mullen <ntaylormullen@google.com>

packages/cli/src/ui/hooks/slashCommandProcessor.ts

@@ -94,7 +94,7 @@ export const useSlashCommandProcessor = (
       {
         name: 'quit',
         altName: 'exit',
-        description: '',
+        description: 'exit the cli',
         action: (_value: PartListUnion | string) => {
           onDebugMessage('Quitting. Good-bye.');
           process.exit(0);