feat: api reference and documentation nav cleanup

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing and Code of Conduct guidelines.
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
feat: api reference and documentation nav cleanup

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.88%. Comparing base (34f837e) to head (6a3f533).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #410   +/-   ##
=======================================
  Coverage   99.87%   99.88%           
=======================================
  Files          16       16           
  Lines        2496     2502    +6     
  Branches      758      754    -4     
=======================================
+ Hits         2493     2499    +6     
  Misses          2        2           
  Partials        1        1           

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[gemini-code-assist]

Code Review

This pull request introduces a methodShort property to the API parser and updates the modern template's sidebar UI, including layout adjustments and CSS refinements for better visual hierarchy. Feedback recommends shortening the 'OPTIONS' method to 'OPT' for consistency and suggests CSS improvements such as adding min-width: 0 for proper text truncation and using !important to ensure style overrides are correctly applied.