Make comments cache-safe

app/javascript/controllers/thread_controller.js

@@ -0,0 +1,13 @@
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+  static classes = [ "myComment" ]
+
+  connect() {
+    this.#myComments.forEach(comment => comment.classList.add(this.myCommentClass))
+  }
+
+  get #myComments() {
+    return this.element.querySelectorAll(`.comment[data-creator-id='${Current.user.id}']`)
+  }
+}