cleanup vite.configs and simplify exported sdk props.

package.json

@@ -113,6 +113,7 @@
     "loglevel": "^1.9.1",
     "matrix-js-sdk": "^39.2.0",
     "matrix-widget-api": "^1.14.0",
+    "node-stdlib-browser": "^1.3.1",
     "normalize.css": "^8.0.1",
     "observable-hooks": "^4.2.3",
     "pako": "^2.0.4",
@@ -135,6 +136,8 @@
     "vite": "^7.0.0",
     "vite-plugin-generate-file": "^0.3.0",
     "vite-plugin-html": "^3.2.2",
+    "vite-plugin-node-stdlib-browser": "^0.2.1",
+    "vite-plugin-singlefile": "^2.3.0",
     "vite-plugin-svgr": "^4.0.0",
     "vitest": "^3.0.0",
     "vitest-axe": "^1.0.0-pre.3"