refactor(superdoc): drop UMD deprecation shim

The old superdoc.umd.js was broken for browser use (wrong external
globals, ReferenceError on load). No deprecation window needed for
something that didn't work. Remove emit-umd-alias.cjs, the UMD alias
test, and the build:cdn pipe to it. Fix AGENTS.md to note that Yjs is
inlined (only pdfjs-dist stays external).

Author: caio-pizzol

packages/superdoc/AGENTS.md

@@ -51,7 +51,7 @@ Drop SuperDoc into any HTML page via `<script>` tag. No bundler, no `npm install
 </script>
 ```
 
-`window.SuperDoc` is the class directly. Named exports are attached as static properties (`SuperDoc.createTheme`, `SuperDoc.DOCX`, etc.). Collaboration (Yjs) and PDF viewing peers are **not** bundled — use the ESM path below if you need them.
+`window.SuperDoc` is the class directly. Named exports are attached as static properties (`SuperDoc.createTheme`, `SuperDoc.DOCX`, etc.). Collaboration (Yjs) is included. PDF viewing (`pdfjs-dist`) is not — use the ESM path below if you need it.
 
 ### ES modules + import map
 

packages/superdoc/package.json

@@ -98,7 +98,7 @@
     "postbuild": "node ./scripts/ensure-types.cjs && node ./scripts/audit-bundle.cjs",
     "build:es": "vite build && pnpm run postbuild",
     "watch:es": "vite build --watch",
-    "build:cdn": "vite build --config vite.config.cdn.js && node ./scripts/emit-umd-alias.cjs",
+    "build:cdn": "vite build --config vite.config.cdn.js",
     "watch:cdn": "vite build --watch --config vite.config.cdn.js",
     "clean": "rm -rf dist",
     "pack:local": "pnpm run pack",

packages/superdoc/scripts/emit-umd-alias.cjs

@@ -23,17 +23,3 @@ test('IIFE bundle (superdoc.global.js) exposes SuperDoc class on window', async
 
   expect(errors).toEqual([]);
 });
-
-test('deprecated superdoc.umd.js alias still works and warns', async ({ page }) => {
-  const warnings: string[] = [];
-  page.on('console', (msg) => {
-    if (msg.type() === 'warning') warnings.push(msg.text());
-  });
-
-  await page.goto('/tests/cdn-smoke/index.umd-alias.html');
-
-  const ready = await page.evaluate(() => (window as any).__SUPERDOC_READY__ === true);
-  expect(ready).toBe(true);
-
-  expect(warnings.some((w) => w.includes('superdoc.umd.js is deprecated'))).toBe(true);
-});