feat: Show GCP project from Code Assist endpoint in /about command

[AbdulTawabJuly]

Summary

Previously, /about only showed the GCP project from the GOOGLE_CLOUD_PROJECT environment variable. When users authenticated with OAuth (Code Assist), they couldn't see which GCP project was actually being used by the Code Assist API
The /about command now displays the Google Cloud Project ID from the Code Assist endpoint when using OAuth authentication, with a fallback to the GOOGLE_CLOUD_PROJECT environment variable.

Details

Updated the GCP project resolution logic with the following priority:

1. Code Assist server project ID (set during OAuth authentication flow)
2. Environment variable (GOOGLE_CLOUD_PROJECT)
3. Empty string (no project information available)

Changes

• aboutCommand.ts: Added getGcpProject() helper that checks Code Assist server first, then falls back to env var
• aboutCommand.test.ts: Added 3 new test cases covering all scenarios:
  • Code Assist project takes priority over env var
  • Falls back to env var when Code Assist unavailable
  • Returns empty when neither source available

Related Issues

Fixes #20602

How to Validate

• Log in with Google OAuth

  • Run /about command
  • Verify GCP Project shows the project ID from Code Assist endpoint

• Switch to API key authentication (use /auth command)

  • Set environment variable: export GOOGLE_CLOUD_PROJECT="my-test-project-from-env"
  • Run /about command
  • Verify GCP Project shows my-test-project-from-env from environment variable

• Unset environment variable: unset GOOGLE_CLOUD_PROJECT

  • Run /about command
  • Verify GCP Project field is not displayed (empty string)

• Log in with Google OAuth (Code Assist active)

  • Set environment variable: export GOOGLE_CLOUD_PROJECT="different-project"
  • Run /about command
  • Verify GCP Project shows Code Assist project (e.g., cobalt-device-6tqG3), NOT different-project

Pre-Merge Checklist

• Updated relevant documentation and README (if needed)
• Added/updated tests (if needed)
• Noted breaking changes (if any)
• Validated on required platforms/methods:
  • MacOS
    • npm run
    • npx
    • Docker
    • Podman
    • Seatbelt
  • Windows
    • npm run
    • npx
    • Docker
  • Linux
    • npm run
    • npx
    • Docker

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the /about command by introducing a more robust mechanism for displaying the Google Cloud Project ID. Previously, it only showed the project from an environment variable, which was insufficient for users authenticated with Code Assist (OAuth). The updated logic now prioritizes the project ID obtained from the Code Assist endpoint, falling back to the environment variable if the Code Assist project is not available, ensuring users see the correct and relevant project information.

Highlights

• New GCP Project Resolution: Implemented a new logic to determine the GCP project ID displayed in the /about command, prioritizing the Code Assist server project ID over the GOOGLE_CLOUD_PROJECT environment variable.
• Enhanced /about Command: The /about command now accurately reflects the GCP project being used by the Code Assist API when authenticated via OAuth.
• Comprehensive Testing: Added three new test cases to validate the different scenarios of GCP project resolution, ensuring correct behavior for Code Assist priority, environment variable fallback, and no project availability.

Changelog

• packages/cli/src/ui/commands/aboutCommand.test.ts
  • Added imports for getCodeAssistServer and CodeAssistServer type.
  • Mocked getCodeAssistServer for testing purposes.
  • Introduced three new test cases to verify the GCP project resolution logic, covering scenarios where Code Assist project takes precedence, fallback to environment variable, and no project is found.
• packages/cli/src/ui/commands/aboutCommand.ts
  • Imported getCodeAssistServer from @google/gemini-cli-core.
  • Replaced direct environment variable access for gcpProject with a call to a new helper function.
  • Implemented a new getGcpProject helper function that retrieves the GCP project ID, prioritizing the Code Assist server project over the GOOGLE_CLOUD_PROJECT environment variable.

Activity

• The author has completed the "Added/updated tests" item in the pre-merge checklist.
• The author has validated the changes on MacOS using npm run and npx.

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[gemini-code-assist]

Code Review

This pull request correctly implements the logic to display the GCP project from the Code Assist endpoint in the /about command, with a fallback to the environment variable. The new tests cover the different scenarios well. My main feedback is to align the new tests with the repository's testing conventions for handling environment variables to improve test reliability.

[AbdulTawabJuly]

Hi @sehoon38, I wanted to check in regarding the future of this PR. If this is something you’d prefer to handle internally, please let me know. I’d be happy to close it to avoid any unnecessary workload.
I completely understand you’re managing a high volume of PRs right now, so I don’t want to add to the noise. Just looking for clarity so I can act accordingly. Thanks for your time

[AbdulTawabJuly]

Hi @sehoon38 , sorry to bother you again, but could you let me know if this pull request is still needed? Or should I go ahead and close it?