fix: HRM in dev

config/config.ts

@@ -1,5 +1,6 @@
 import { defineConfig } from '@umijs/max';
 import keepAlive from './keep-alive';
+import { extraMfsuExclude } from './mfsu.extensions';
 import { compressionPluginConfig, monacoPluginConfig } from './plugins';
 import proxy from './proxy';
 import routes from './routes';
@@ -32,7 +33,7 @@ export default defineConfig({
     defaultSizes: 'parsed' // stat  // gzip
   },
   mfsu: {
-    exclude: ['lodash', 'ml-pca']
+    exclude: ['lodash', 'ml-pca', ...extraMfsuExclude]
   },
   base: process.env.npm_config_base || '/',
   ...(isProduction

config/mfsu.extensions.ts

@@ -0,0 +1,9 @@
+// Identity hook for build-time mfsu.exclude extensions. Tooling may
+// overwrite this file to add package names that must skip MFSU's
+// pre-bundling; the original is restored on cleanup. Mirrors
+// `src/request.extensions.ts` / `src/access.extensions.ts`.
+//
+// MFSU bundles node_modules into immutable chunks at dev startup, so
+// workspace-linked packages whose source you edit during dev must be
+// excluded here or HMR won't pick up changes.
+export const extraMfsuExclude: string[] = [];