fix(build): restore polyfill shims for shared folder imports

web/src/polyfills/buffer-shim.ts

@@ -0,0 +1,4 @@
+// Buffer polyfill shim for vite-plugin-node-polyfills
+import { Buffer } from 'buffer';
+export { Buffer };
+export default Buffer;

web/src/polyfills/global-shim.ts

@@ -0,0 +1,2 @@
+// Global polyfill shim for vite-plugin-node-polyfills
+export default typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : {};

web/src/polyfills/process-shim.ts

@@ -0,0 +1,9 @@
+// Process polyfill shim for vite-plugin-node-polyfills
+const processShim = {
+  env: {},
+  browser: true,
+  version: '',
+  versions: {},
+};
+
+export default processShim;