fix: copilot-plugin test checks all 6 command files (#393)

Previously only checked 4 of 6. ponytail-gain.toml and
ponytail-help.toml are now validated.

Closes #381

Co-authored-by: Admin <admin@Admins-MacBook-Pro.local>

tests/copilot-plugin.test.js

@@ -13,6 +13,8 @@ const REQUIRED_COMMAND_FILES = [
   'ponytail-review.toml',
   'ponytail-audit.toml',
   'ponytail-debt.toml',
+  'ponytail-gain.toml',
+  'ponytail-help.toml',
 ];
 
 function readJSON(relPath) {