feat(cli): show resume message when exiting session

[afarber]

Summary

Display "Resume this session by running gemini --resume" when quitting via /quit or Ctrl+C, as requested by maintainer in #16226.

Details

Add sessionId field to HistoryItemQuit type and pass it through the quit flow:

• quitCommand.ts now includes the sessionId in the quit message
• SessionSummaryDisplay.tsx conditionally renders the resume hint below the stats box
• Message uses theme colors for consistent styling

Related Issues

Closes #16226

How to Validate

1. Run npm run build && npm run start
2. Type some prompt, like asking when is sun down today
3. Type /quit or press Ctrl+C twice
4. Verify message "Resume this session by running gemini --resume" appears below the session stats box

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 @afarber, 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 introduces a helpful user experience enhancement to the CLI by providing clear instructions on how to resume a session after it has been terminated. By integrating the session ID into the quit process and updating the session summary display, users can now easily pick up where they left off, improving workflow continuity and reducing friction.

Highlights

• Resume Message on Quit: Implemented a feature to display a 'Resume this session by running gemini --resume' message when a user quits the CLI session via /quit or Ctrl+C.
• Session ID Integration: The sessionId is now passed through the quit flow, specifically added to the HistoryItemQuit type and included in the quit message generated by quitCommand.ts.
• Conditional UI Rendering: The SessionSummaryDisplay.tsx component has been updated to conditionally render the resume hint below the session statistics box, utilizing theme colors for consistent styling.
• Test Coverage: New test cases were added to SessionSummaryDisplay.test.tsx to ensure the resume message renders correctly when a sessionId is provided.

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[gemini-code-assist]

Code Review

This pull request adds a helpful message for resuming a session when the user quits. The implementation is clean and follows existing patterns. I've found one potential issue with a hardcoded command name that might not work in all environments, which I've detailed in a specific comment. Otherwise, the changes look good and the tests are well-written.

[afarber]

Hi @jacob314 please review my PR.

Here I have tested on Ubuntu 25.04. First I have asked "Which weekday is 1st of Feb", then pressed CTRL-C and finally the Resume this session by running gemini --resume message is printed:

[jackwotherspoon]

I am going to close this in favor of the first PR that was opened: #16285

In general we want to foster a positive open-source community. 😄 I am going to help get the first PR opened for this landed.

@afarber really appreciate the PR here and the contributions to Gemini CLI.

But in the future let's just add a comment on the existing PR like "maybe we should add a test for this" or "what about X edge case?". This way the original PR author can take the feedback and iterate instead of creating a new PR for the same issue.

Hope this makes sense, again I love your contributions!

[afarber]

No problem, frankly speaking I noticed the original PR too late when I already started testing my own fix.