fix(.github/workflows): replace github mcp server with gh cli

[julieqiu]

Remove use of the GitHub MCP and use the pre-installed GitHub CLI directly for use in Gemini workflows.

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[julieqiu]

@gemini-cli please confirm if you can create an issue with the updated settings in this PR

[github-actions]

🤖 Hi @julieqiu, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.10%. Comparing base (ec03ba5) to head (677707d).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4695   +/-   ##
=======================================
  Coverage   79.10%   79.10%           
=======================================
  Files         111      111           
  Lines        9420     9420           
=======================================
  Hits         7452     7452           
  Misses       1453     1453           
  Partials      515      515           

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[github-actions]

🤖 AI Assistant: Plan of Action

I have analyzed the request and propose the following plan. This plan will not be executed until it is approved by a maintainer.

Resource Estimate:

• Estimated Tool Calls: ~1
• Files to Modify: 0

Proposed Steps:

• Step 1: Post a comment confirming that I cannot create an issue. The github MCP server (which provided the create_issue tool) is removed by the updated settings in this PR, and my security protocol strictly prohibits me from using the gh shell command for repository operations.

Please review this plan. To approve, comment @gemini-cli /approve on this issue. To make changes, comment changes needed.

[julieqiu]

@gemini-cli please confirm if you can create an issue with the updated settings in this PR

[julieqiu]

@gemini-cli please confirm if you can create an issue with the updated settings in this PR