diff --git a/packages/cli/src/services/FileCommandLoader.ts b/packages/cli/src/services/FileCommandLoader.ts
index 8095a72e3..ef81f9e69 100644
--- a/packages/cli/src/services/FileCommandLoader.ts
+++ b/packages/cli/src/services/FileCommandLoader.ts
@@ -11,7 +11,7 @@ import toml from '@iarna/toml';
 import { glob } from 'glob';
 import { z } from 'zod';
 import type { Config } from '@qwen-code/qwen-code-core';
-import { Storage } from '@qwen-code/qwen-code-core';
+import { EXTENSIONS_CONFIG_FILENAME, Storage } from '@qwen-code/qwen-code-core';
 import type { ICommandLoader } from './types.js';
 import {
   parseMarkdownCommand,
@@ -22,7 +22,6 @@ import {
   type CommandDefinition,
 } from './command-factory.js';
 import type { SlashCommand } from '../ui/commands/types.js';
-import { EXTENSIONS_CONFIG_FILENAME } from '../config/extensions/variables.js';
 
 interface CommandDirectory {
   path: string;
diff --git a/packages/cli/src/ui/components/DialogManager.tsx b/packages/cli/src/ui/components/DialogManager.tsx
index a87192ab2..694c77d64 100644
--- a/packages/cli/src/ui/components/DialogManager.tsx
+++ b/packages/cli/src/ui/components/DialogManager.tsx
@@ -17,7 +17,6 @@ import { QwenOAuthProgress } from './QwenOAuthProgress.js';
 import { AuthDialog } from '../auth/AuthDialog.js';
 import { OpenAIKeyPrompt } from './OpenAIKeyPrompt.js';
 import { EditorSettingsDialog } from './EditorSettingsDialog.js';
-import { WorkspaceMigrationDialog } from './WorkspaceMigrationDialog.js';
 import { PermissionsModifyTrustDialog } from './PermissionsModifyTrustDialog.js';
 import { ModelDialog } from './ModelDialog.js';
 import { ApprovalModeDialog } from './ApprovalModeDialog.js';
@@ -78,15 +77,6 @@ export const DialogManager = ({
   if (uiState.showIdeRestartPrompt) {
     return <IdeTrustChangeDialog reason={uiState.ideTrustRestartReason} />;
   }
-  if (uiState.showWorkspaceMigrationDialog) {
-    return (
-      <WorkspaceMigrationDialog
-        workspaceExtensions={uiState.workspaceExtensions}
-        onOpen={uiActions.onWorkspaceMigrationDialogOpen}
-        onClose={uiActions.onWorkspaceMigrationDialogClose}
-      />
-    );
-  }
   if (uiState.shouldShowIdePrompt) {
     return (
       <IdeIntegrationNudge
diff --git a/packages/cli/src/ui/components/WorkspaceMigrationDialog.tsx b/packages/cli/src/ui/components/WorkspaceMigrationDialog.tsx
deleted file mode 100644
index f1f0482cf..000000000
--- a/packages/cli/src/ui/components/WorkspaceMigrationDialog.tsx
+++ /dev/null
@@ -1,119 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { Box, Text } from 'ink';
-import {
-  type Extension,
-  performWorkspaceExtensionMigration,
-} from '../../config/extension.js';
-import { RadioButtonSelect } from './shared/RadioButtonSelect.js';
-import { theme } from '../semantic-colors.js';
-import { useState } from 'react';
-import { useKeypress } from '../hooks/useKeypress.js';
-
-export function WorkspaceMigrationDialog(props: {
-  workspaceExtensions: Extension[];
-  onOpen: () => void;
-  onClose: () => void;
-}) {
-  const { workspaceExtensions, onOpen, onClose } = props;
-  const [migrationComplete, setMigrationComplete] = useState(false);
-  const [failedExtensions, setFailedExtensions] = useState<string[]>([]);
-  onOpen();
-  const onMigrate = async () => {
-    const failed = await performWorkspaceExtensionMigration(
-      workspaceExtensions,
-      // We aren't updating extensions, just moving them around, don't need to ask for consent.
-      async (_) => true,
-    );
-    setFailedExtensions(failed);
-    setMigrationComplete(true);
-  };
-
-  useKeypress(
-    (key) => {
-      if (migrationComplete && key.sequence === 'q') {
-        process.exit(0);
-      }
-    },
-    { isActive: true },
-  );
-
-  if (migrationComplete) {
-    return (
-      <Box
-        flexDirection="column"
-        borderStyle="round"
-        borderColor={theme.border.default}
-        padding={1}
-      >
-        {failedExtensions.length > 0 ? (
-          <>
-            <Text color={theme.text.primary}>
-              The following extensions failed to migrate. Please try installing
-              them manually. To see other changes, Qwen Code must be restarted.
-              Press &apos;q&apos; to quit.
-            </Text>
-            <Box flexDirection="column" marginTop={1} marginLeft={2}>
-              {failedExtensions.map((failed) => (
-                <Text key={failed}>- {failed}</Text>
-              ))}
-            </Box>
-          </>
-        ) : (
-          <Text color={theme.text.primary}>
-            Migration complete. To see changes, Qwen Code must be restarted.
-            Press &apos;q&apos; to quit.
-          </Text>
-        )}
-      </Box>
-    );
-  }
-
-  return (
-    <Box
-      flexDirection="column"
-      borderStyle="round"
-      borderColor={theme.border.default}
-      padding={1}
-    >
-      <Text bold color={theme.text.primary}>
-        Workspace-level extensions are deprecated{'\n'}
-      </Text>
-      <Text color={theme.text.primary}>
-        Would you like to install them at the user level?
-      </Text>
-      <Text color={theme.text.primary}>
-        The extension definition will remain in your workspace directory.
-      </Text>
-      <Text color={theme.text.primary}>
-        If you opt to skip, you can install them manually using the extensions
-        install command.
-      </Text>
-
-      <Box flexDirection="column" marginTop={1} marginLeft={2}>
-        {workspaceExtensions.map((extension) => (
-          <Text key={extension.config.name}>- {extension.config.name}</Text>
-        ))}
-      </Box>
-      <Box marginTop={1}>
-        <RadioButtonSelect
-          items={[
-            { label: 'Install all', value: 'migrate', key: 'migrate' },
-            { label: 'Skip', value: 'skip', key: 'skip' },
-          ]}
-          onSelect={(value: string) => {
-            if (value === 'migrate') {
-              onMigrate();
-            } else {
-              onClose();
-            }
-          }}
-        />
-      </Box>
-    </Box>
-  );
-}
diff --git a/packages/core/src/extension/extensionManager.ts b/packages/core/src/extension/extensionManager.ts
index 5b2922e5b..1fab09498 100644
--- a/packages/core/src/extension/extensionManager.ts
+++ b/packages/core/src/extension/extensionManager.ts
@@ -1334,5 +1334,3 @@ export async function parseInstallSource(
   }
   return installMetadata;
 }
-
-export { checkForExtensionUpdate };
diff --git a/packages/core/src/extension/index.ts b/packages/core/src/extension/index.ts
new file mode 100644
index 000000000..dd4b413fb
--- /dev/null
+++ b/packages/core/src/extension/index.ts
@@ -0,0 +1,3 @@
+export * from './extensionManager.js';
+export * from './variables.js';
+export * from './github.js';
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 8d93c35ce..fb14dc610 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -84,7 +84,7 @@ export * from './subagents/index.js';
 export * from './skills/index.js';
 
 // Export extension
-export * from './extension/extensionManager.js';
+export * from './extension/index.js';
 
 // Export prompt logic
 export * from './prompts/mcp-prompts.js';