Convert Stimulus controller methods to arrow functions for SWC compatibility

Use arrow functions (class fields) instead of regular methods in CommentsController to ensure proper `this` binding with SWC transpilation. Arrow functions maintain lexical `this` binding, which fixes the issue where Stimulus event listeners weren't triggering methods correctly when transpiled by SWC.

Changes:
- resetText() -> resetText = () => {}
- refreshCommentList() -> refreshCommentList = () => {}
- connect() -> connect = () => {}

This ensures Stimulus can properly bind and call these methods when responding to Turbo events.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

client/app/controllers/comments_controller.js

@@ -10,7 +10,7 @@ marked.use(mangle());
 export default class CommentsController extends Controller {
   static targets = ['commentList', 'commentAuthor', 'commentText', 'commentRefresh', 'alertDiv', 'errorList'];
 
-  resetText() {
+  resetText = () => {
     const inputAuthor = this.commentAuthorTarget;
     const inputText = this.commentTextTarget;
     const alertDiv = this.alertDivTarget;
@@ -41,12 +41,12 @@ export default class CommentsController extends Controller {
     }
   }
 
-  refreshCommentList() {
+  refreshCommentList = () => {
     const refreshBtn = this.commentRefreshTarget;
     refreshBtn.click();
   }
 
-  connect() {
+  connect = () => {
     console.log('connected to Stimulus comments_controller');
 
     const protocol = window.location.protocol === 'https:' ? 'wss://' : 'ws://';