chore(ci): Fail the commit if a module imports or uses debug helpers

assets/js/code-controls.js

@@ -1,5 +1,4 @@
 import $ from 'jquery';
-import { debugBreak } from './utils/debug-helpers.js';
 
 function initialize() {
   var codeBlockSelector = '.article--content pre';

lefthook.yml

@@ -5,6 +5,10 @@
 pre-commit:
   parallel: true
   commands:
+    eslint-debug-check:
+      glob: "assets/js/*.js"
+      run: yarn eslint {staged_files}
+      fail_text: "Debug helpers found! Remove debug imports and calls before committing."
     build-copilot-instructions:
       glob: "CONTRIBUTING.md"
       run: yarn build:copilot-instructions 
@@ -58,6 +62,10 @@ pre-commit:
           { echo "⚠️  Prettier found formatting issues. Automatic formatting applied."
           git add {staged_files}
         }
+    lint-js:
+      glob: "assets/js/*.{js,ts}"
+      run: yarn eslint {staged_files}
+      fail_text: "JavaScript linting failed. Fix errors before committing."
 pre-push:
   commands:
     packages-audit: