diff --git a/packages/cli/src/ui/AppContainer.test.tsx b/packages/cli/src/ui/AppContainer.test.tsx
index b0e4be44e39..7b358c1ab46 100644
--- a/packages/cli/src/ui/AppContainer.test.tsx
+++ b/packages/cli/src/ui/AppContainer.test.tsx
@@ -39,6 +39,8 @@ const mockCoreEvents = vi.hoisted(() => ({
   off: vi.fn(),
   drainBacklogs: vi.fn(),
   emit: vi.fn(),
+  emitFeedback: vi.fn(),
+  emitSettingsChanged: vi.fn(),
 }));
 
 // Mock IdeClient
@@ -3707,4 +3709,49 @@ describe('AppContainer State Management', () => {
       unmount();
     });
   });
+
+  describe('IDE Companion Integration Nudge', () => {
+    let mockHandleSlashCommand: Mock;
+
+    beforeEach(() => {
+      mockHandleSlashCommand = vi.fn();
+      mockedUseSlashCommandProcessor.mockReturnValue({
+        handleSlashCommand: mockHandleSlashCommand,
+        slashCommands: [],
+        pendingHistoryItems: [],
+        commandContext: {},
+        shellConfirmationRequest: null,
+        confirmationRequest: null,
+      });
+    });
+
+    it('executes "/ide enable" when companion extension is pre-installed', async () => {
+      const { unmount } = await act(async () => renderAppContainer());
+
+      act(() => {
+        capturedUIActions.handleIdePromptComplete({
+          userSelection: 'yes',
+          isExtensionPreInstalled: true,
+        });
+      });
+
+      expect(mockHandleSlashCommand).toHaveBeenCalledWith('/ide enable');
+      unmount();
+    });
+
+    it('executes "/ide install" when companion extension is not pre-installed', async () => {
+      const { unmount } = await act(async () => renderAppContainer());
+
+      act(() => {
+        capturedUIActions.handleIdePromptComplete({
+          userSelection: 'yes',
+          isExtensionPreInstalled: false,
+        });
+      });
+
+      expect(mockHandleSlashCommand).toHaveBeenCalledWith('/ide install');
+      unmount();
+    });
+  });
 });
+
diff --git a/packages/cli/src/ui/AppContainer.tsx b/packages/cli/src/ui/AppContainer.tsx
index e11282788bc..c7d25ed2c33 100644
--- a/packages/cli/src/ui/AppContainer.tsx
+++ b/packages/cli/src/ui/AppContainer.tsx
@@ -1773,8 +1773,11 @@ Logging in with Google... Restarting Gemini CLI to continue.
   const handleIdePromptComplete = useCallback(
     (result: IdeIntegrationNudgeResult) => {
       if (result.userSelection === 'yes') {
-        // eslint-disable-next-line @typescript-eslint/no-floating-promises
-        handleSlashCommand('/ide install');
+        if (result.isExtensionPreInstalled) {
+          void handleSlashCommand('/ide enable');
+        } else {
+          void handleSlashCommand('/ide install');
+        }
         settings.setValue(SettingScope.User, 'ide.hasSeenNudge', true);
       } else if (result.userSelection === 'dismiss') {
         settings.setValue(SettingScope.User, 'ide.hasSeenNudge', true);