build(vite): alias async-event-store to shim to avoid Vercel resolution error

- Add alias for applesauce-core/dist/event-store/async-event-store.js
- Provide minimal shim module so bundler resolves cleanly
- Use node:path and import.meta.url to build absolute path
- Keep linter strict (added ts-expect-error for node path types)

vite.config.ts

@@ -1,5 +1,8 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-expect-error Node built-in types may be missing in editor, available at build time
+import path from 'node:path'
 
 export default defineConfig({
   plugins: [react()],
@@ -10,7 +13,12 @@ export default defineConfig({
     extensions: ['.js', '.ts', '.tsx', '.json'],
     conditions: ['import', 'module', 'browser', 'default'],
     preserveSymlinks: false,
-    mainFields: ['module', 'jsnext:main', 'jsnext', 'main']
+    mainFields: ['module', 'jsnext:main', 'jsnext', 'main'],
+    alias: {
+      // applesauce-core publishes async-event-store.js in some environments, but exports map can block deep resolution on Vercel
+      // We don't use the async store; stub it to avoid bundler trying to resolve it
+      'applesauce-core/dist/event-store/async-event-store.js': path.resolve(new URL('./src/shims/applesauce/async-event-store.js', import.meta.url).pathname)
+    }
   },
   optimizeDeps: {
     include: ['applesauce-core', 'applesauce-factory', 'applesauce-relay', 'applesauce-react'],