First commit in the branch. Added TODO at top of main.js and dom.js

steps/src/dom.js

@@ -1,3 +1,4 @@
+// TODO(sync-refactor): move sync logic into src/sync.js
 import { appState } from "./state.js";
 import { formatUTCTime } from "./utils.js";
 import { throttledUpdateExplorer } from "./dataExplorer.js";

steps/src/main.js

@@ -1,3 +1,4 @@
+// TODO(sync-refactor): move sync logic into src/sync.js
 // ===========================================================================================================
 // REFACTOR PLAN: This monolithic script will be broken down into
 // the following modules in the '/src' directory: