Document .once() method and 'loaded' event, update npm packages

Update npm packages including @jqhtml/core

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

node_modules/@jqhtml/parser/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jqhtml/parser",
-  "version": "2.3.39",
+  "version": "2.3.41",
   "description": "JQHTML template parser - converts templates to JavaScript",
   "type": "module",
   "main": "dist/index.js",