fix(ui): added volta to auto update check (#27353)

packages/cli/src/utils/installationInfo.test.ts

@@ -352,6 +352,30 @@ describe('getInstallationInfo', () => {
     expect(infoDisabled.updateMessage).toContain('Please run npm install');
   });
 
+  it('should detect Volta installation (Unix-style)', () => {
+    const voltaPath =
+      '/Users/test/.volta/tools/image/node/20.0.0/lib/node_modules/@google/gemini-cli/dist/index.js';
+    process.argv[1] = voltaPath;
+    mockedRealPathSync.mockReturnValue(voltaPath);
+
+    const info = getInstallationInfo(projectRoot, true);
+
+    expect(info.packageManager).toBe(PackageManager.VOLTA);
+    expect(info.updateCommand).toBe('volta install @google/gemini-cli@latest');
+  });
+
+  it('should detect Volta installation (Windows-style)', () => {
+    const voltaPath =
+      'C:\\Users\\test\\AppData\\Local\\Volta\\tools\\image\\node\\20.0.0\\node_modules\\@google/gemini-cli\\dist\\index.js';
+    process.argv[1] = voltaPath;
+    mockedRealPathSync.mockReturnValue(voltaPath);
+
+    const info = getInstallationInfo(projectRoot, true);
+
+    expect(info.packageManager).toBe(PackageManager.VOLTA);
+    expect(info.updateCommand).toBe('volta install @google/gemini-cli@latest');
+  });
+
   it('should NOT detect Homebrew if gemini-cli is installed in brew but running from npm location', () => {
     Object.defineProperty(process, 'platform', {
       value: 'darwin',

packages/cli/src/utils/installationInfo.ts

@@ -22,6 +22,7 @@ export enum PackageManager {
   HOMEBREW = 'homebrew',
   NPX = 'npx',
   BINARY = 'binary',
+  VOLTA = 'volta',
   UNKNOWN = 'unknown',
 }
 
@@ -116,6 +117,19 @@ export function getInstallationInfo(
       }
     }
 
+    // Check for Volta
+    if (realPath.includes('/.volta/') || realPath.includes('/Volta/')) {
+      const updateCommand = 'volta install @google/gemini-cli@latest';
+      return {
+        packageManager: PackageManager.VOLTA,
+        isGlobal: true,
+        updateCommand,
+        updateMessage: isAutoUpdateEnabled
+          ? 'Installed with Volta. Attempting to automatically update now...'
+          : `Please run ${updateCommand} to update`,
+      };
+    }
+
     // Check for pnpm
     if (
       realPath.includes('/.pnpm/global') ||