chore: update gemini styleguide

[scotthart]

Hopefully this will reduce some of the suggestions we have been ignoring.

[gemini-code-assist]

Note

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.94%. Comparing base (659a261) to head (709e125).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15758      +/-   ##
==========================================
- Coverage   92.95%   92.94%   -0.01%     
==========================================
  Files        2448     2448              
  Lines      226434   226434              
==========================================
- Hits       210483   210464      -19     
- Misses      15951    15970      +19     

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