docs: 📝 update test coverage info and friendly discussion text

[mandy8055]

No description provided.

[vercel]

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Project	Deployment	Actions	Updated
data-structures	Building	Preview	Sep 22, 2026 4:02pm UTC

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.93%. Comparing base (4643f35) to head (ac3e8ce).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #110   +/-   ##
=======================================
  Coverage   99.93%   99.93%           
=======================================
  Files          13       13           
  Lines        1441     1441           
  Branches      281      281           
=======================================
  Hits         1440     1440           
  Partials        1        1           

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[mandy8055]

Closing this since the changes have been incorporated in PR #111