[Docs] Script-tag / IIFE usage instructions are incorrect

[SamuelAB-VIM]

Environment

• vim-web 1.0.0-alpha.0, IIFE build (dist/vim-web.iife.js) loaded via <script>
• API: VIM.Core.Webgl.createViewer() (headless, custom UI)
• Chromium / desktop, devicePixelRatio 1.75
• Model: 2,547 elements (2,264 with geometry), 12 Revit categories, structural

---

The current script-tag guidance does not work as written. Observed corrections:

Doc says	Reality
<script src="vim-web.umd.js">	file is dist/vim-web.iife.js (no .umd.js)
global VIM	global is VIMReact
VIM.React.Webgl.createViewer(...)	works under VIMReact.*, but…
(nothing about peers)	React and ReactDOM must be present as globals first — the bundle ends }({}, React, ReactDOM) (peers externalized; three is bundled)
(nothing about process)	a window.process shim is required or the bundle throws on load

Without the shim, loading the IIFE throws immediately:

ReferenceError: process is not defined
    at requireJsxRuntime (...)

Working snippet (please document something like this):

<script>window.process = window.process || { env: { NODE_ENV: 'production' } };</script>
<script src="https://unpkg.com/react@18.3.1/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom@18.3.1/umd/react-dom.production.min.js"></script>
<script src="https://unpkg.com/vim-web@<version>/dist/vim-web.iife.js"></script>
<script>
  const VIM = VIMReact;                          // global is VIMReact
  const viewer = VIM.Core.Webgl.createViewer();  // headless, no React UI
  document.body.appendChild(viewer.viewport.canvas);
  const vim = await viewer.load({ url: 'model.vim' }).getVim();
  await vim.load();
</script>

Bonus ask. Consider shipping a self-contained IIFE that bundles React (or exposes a UMD
that doesn't require window.process), so <script> consumers don't need shims/peers.