diff --git a/apps/desktop/package.json b/apps/desktop/package.json
index 2d396dab4b..6240a1c749 100644
--- a/apps/desktop/package.json
+++ b/apps/desktop/package.json
@@ -41,7 +41,7 @@
     "package:linux-deb-arm64": "electron-builder --config electron-builder.config.mjs --linux deb --arm64 --publish never",
     "typecheck": "tsc -p tsconfig.preload.json --noEmit && tsc -p tsconfig.main.json --noEmit && tsc -p tsconfig.renderer.json --noEmit && tsc -p tsconfig.storybook.json --noEmit",
     "typecheck:stories": "tsc -p tsconfig.storybook.json --noEmit",
-    "test:dist": "node --test \"dist/main/**/*.test.js\" scripts/dev-app-runtime.test.mjs",
+    "test:dist": "node --test \"dist/main/**/*.test.js\" scripts/dev-app-runtime.test.mjs scripts/vite-workspace-packages.test.mjs",
     "e2e": "npm run build:with-deps && playwright test --config e2e/playwright.config.ts",
     "build:with-deps": "npm run build:workspace-deps && npm run build",
     "smoke:real-window": "npm run build:with-deps && node ../../scripts/desktop-real-window-smoke.mjs",
diff --git a/apps/desktop/scripts/check-renderer-architecture.mjs b/apps/desktop/scripts/check-renderer-architecture.mjs
index da6f6934c2..b59400f62c 100644
--- a/apps/desktop/scripts/check-renderer-architecture.mjs
+++ b/apps/desktop/scripts/check-renderer-architecture.mjs
@@ -2125,8 +2125,9 @@ function validateViteEntryContract(desktopRoot, violations) {
   };
   const reactCall = pluginCall(0, 'react', 0);
   const dependencyPatchesCall = pluginCall(1, 'dependencyPatchesCachePlugin', 1);
-  const bundledPackagesCall = pluginCall(2, 'bundledNpmPackagesPlugin', 0);
-  const rendererContractCall = pluginCall(3, 'rendererEntryContractPlugin', 1);
+  const workspacePackagesCall = pluginCall(2, 'workspacePackagesPlugin', 1);
+  const bundledPackagesCall = pluginCall(3, 'bundledNpmPackagesPlugin', 0);
+  const rendererContractCall = pluginCall(4, 'rendererEntryContractPlugin', 1);
   const rendererContractRoot = unwrapExpression(rendererContractCall?.arguments[0]);
   const hasPinnedRendererContractRoot =
     rendererContractRoot?.type === 'CallExpression' &&
@@ -2139,6 +2140,7 @@ function validateViteEntryContract(desktopRoot, violations) {
     hasNamedImport(program, 'node:path', 'resolve') &&
     hasDefaultImport(program, '@vitejs/plugin-react', 'react') &&
     hasNamedImport(program, './vite-dependency-patches.js', 'dependencyPatchesCachePlugin') &&
+    hasNamedImport(program, './vite-workspace-packages.js', 'workspacePackagesPlugin') &&
     hasNamedImport(program, './vite-bundled-packages.js', 'bundledNpmPackagesPlugin') &&
     hasNamedImport(
       program,
@@ -2146,10 +2148,12 @@ function validateViteEntryContract(desktopRoot, violations) {
       'rendererEntryContractPlugin',
     );
   const hasPinnedPlugins =
-    pluginElements.length === 4 &&
+    pluginElements.length === 5 &&
     Boolean(reactCall) &&
     Boolean(dependencyPatchesCall) &&
     isIdentifier(dependencyPatchesCall.arguments[0], 'REPO_ROOT') &&
+    Boolean(workspacePackagesCall) &&
+    isIdentifier(workspacePackagesCall.arguments[0], 'REPO_ROOT') &&
     Boolean(bundledPackagesCall) &&
     Boolean(rendererContractCall) &&
     hasPinnedRendererContractRoot;
diff --git a/apps/desktop/scripts/check-renderer-architecture.test.mjs b/apps/desktop/scripts/check-renderer-architecture.test.mjs
index 41aea4b1e7..e6043da2b0 100644
--- a/apps/desktop/scripts/check-renderer-architecture.test.mjs
+++ b/apps/desktop/scripts/check-renderer-architecture.test.mjs
@@ -232,12 +232,14 @@ function rendererEntryContractFiles(overrides = {}) {
       import { rendererEntryContractPlugin } from './scripts/vite-renderer-entry-contract.js';
       import { bundledNpmPackagesPlugin } from './vite-bundled-packages.js';
       import { dependencyPatchesCachePlugin } from './vite-dependency-patches.js';
+      import { workspacePackagesPlugin } from './vite-workspace-packages.js';
       const REPO_ROOT = '/fixture';
       export default defineConfig({
         root: 'src/renderer',
         plugins: [
           react(),
           dependencyPatchesCachePlugin(REPO_ROOT),
+          workspacePackagesPlugin(REPO_ROOT),
           bundledNpmPackagesPlugin(),
           rendererEntryContractPlugin(resolve(import.meta.dirname, 'src/renderer')),
         ],
diff --git a/apps/desktop/scripts/vite-workspace-packages.test.mjs b/apps/desktop/scripts/vite-workspace-packages.test.mjs
new file mode 100644
index 0000000000..6b54f44fe2
--- /dev/null
+++ b/apps/desktop/scripts/vite-workspace-packages.test.mjs
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import assert from 'node:assert/strict';
+import { mkdir, mkdtemp, realpath, rm, symlink, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { setTimeout } from 'node:timers/promises';
+import { test } from 'node:test';
+import { createServer } from 'vite';
+import { workspacePackagesPlugin } from '../vite-workspace-packages.ts';
+
+test('renderer loads a newly exported workspace module after its manifest changes', async (t) => {
+  const repoRoot = await realpath(await mkdtemp(join(tmpdir(), 'maka-workspace-exports-')));
+  let server;
+  t.after(async () => {
+    await server?.close();
+    await rm(repoRoot, { recursive: true, force: true });
+  });
+  const root = join(repoRoot, 'apps/desktop/src/renderer');
+  const core = join(repoRoot, 'packages/core');
+  await mkdir(root, { recursive: true });
+  await mkdir(join(core, 'dist'), { recursive: true });
+  await mkdir(join(repoRoot, 'node_modules/@maka'), { recursive: true });
+  await symlink(core, join(repoRoot, 'node_modules/@maka/core'), 'junction');
+  await writeFile(join(repoRoot, 'package.json'), JSON.stringify({ workspaces: ['packages/core'] }));
+  const manifest = { name: '@maka/core', type: 'module', exports: { './session': './dist/session.js' } };
+  await writeFile(join(core, 'package.json'), JSON.stringify(manifest));
+  await writeFile(join(core, 'dist/session.js'), 'export const session = 1;');
+  await writeFile(join(root, 'entry.js'), "export { session } from '@maka/core/session';");
+
+  server = await createServer({
+    configFile: false,
+    root,
+    logLevel: 'silent',
+    server: { host: '127.0.0.1', port: 0 },
+    optimizeDeps: { noDiscovery: true, include: [] },
+    plugins: [workspacePackagesPlugin(repoRoot)],
+  });
+  await server.listen();
+  const url = server.resolvedUrls.local[0];
+  assert.equal((await fetch(`${url}entry.js`)).status, 200);
+
+  // The workspace build has emitted the new module before the manifest changes.
+  await writeFile(join(core, 'dist/workhub-session-resolver.js'), 'export const resolver = 2;');
+  manifest.exports['./workhub-session-resolver'] = './dist/workhub-session-resolver.js';
+  await writeFile(join(core, 'package.json'), JSON.stringify(manifest));
+  await writeFile(join(root, 'entry.js'), "export { resolver } from '@maka/core/workhub-session-resolver';");
+
+  let failure;
+  const deadline = Date.now() + 5000;
+  while (Date.now() < deadline) {
+    try {
+      const response = await fetch(`${url}entry.js`);
+      const body = await response.text();
+      assert.equal(response.status, 200, body);
+      assert.match(body, /\/packages\/core\/dist\/workhub-session-resolver\.js/);
+      return;
+    } catch (error) {
+      failure = error;
+      await setTimeout(50);
+    }
+  }
+  throw failure;
+});
diff --git a/apps/desktop/vite-workspace-packages.ts b/apps/desktop/vite-workspace-packages.ts
new file mode 100644
index 0000000000..19a06f7ab3
--- /dev/null
+++ b/apps/desktop/vite-workspace-packages.ts
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { readFileSync } from 'node:fs';
+import { resolve } from 'node:path';
+import { normalizePath, type Plugin } from 'vite';
+
+export function workspacePackagesPlugin(repoRoot: string): Plugin {
+  return {
+    name: 'maka-workspace-packages',
+    apply: 'serve',
+    configResolved(config) {
+      const manifest = resolve(repoRoot, 'package.json');
+      const { workspaces } = JSON.parse(readFileSync(manifest, 'utf8')) as { workspaces: string[] };
+      // Workspace exports change resolution just like Vite config does. A file
+      // watch alone leaves the native resolver's package cache stale.
+      config.configFileDependencies.push(
+        normalizePath(manifest),
+        ...workspaces.map((workspace) => normalizePath(resolve(repoRoot, workspace, 'package.json'))),
+      );
+    },
+  };
+}
diff --git a/apps/desktop/vite.config.ts b/apps/desktop/vite.config.ts
index 23b8539fba..aa75bc7fbd 100644
--- a/apps/desktop/vite.config.ts
+++ b/apps/desktop/vite.config.ts
@@ -24,6 +24,7 @@ import react from '@vitejs/plugin-react';
 import { dependencyPatchesCachePlugin } from './vite-dependency-patches.js';
 import { bundledNpmPackagesPlugin } from './vite-bundled-packages.js';
 import { rendererEntryContractPlugin } from './scripts/vite-renderer-entry-contract.js';
+import { workspacePackagesPlugin } from './vite-workspace-packages.js';
 
 /**
  * PR-ICONS-FULL-REPLACE-0 (WAWQAQ msg `60064e2d` 2026-06-24): point the
@@ -46,6 +47,7 @@ export default defineConfig({
   plugins: [
     react(),
     dependencyPatchesCachePlugin(REPO_ROOT),
+    workspacePackagesPlugin(REPO_ROOT),
     bundledNpmPackagesPlugin(),
     rendererEntryContractPlugin(resolve(import.meta.dirname, 'src/renderer')),
   ],