refactor(card): simplify card generation

[FajarKim]

Description

Simplify card generator code.

Type of change

• Bug fix (added a non-breaking change which fixes an issue)
• New feature (added a non-breaking change which adds functionality)
• Updated documentation (updated the readme, templates, or other repo files)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Misc change (updated other files non-breaking change)

How Has This Been Tested?

• Tested locally with a valid username
• Tested locally with an invalid username
• Ran tests with npm test
• Added or updated test cases to test new features

Checklist:

• I have checked to make sure no other pull requests are open for this issue
• The code is properly formatted and is consistent with the existing code style
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

Screenshots

None

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Project	Deployment	Actions	Updated (UTC)
github-readme-profile	Ready	Preview, Comment	Apr 1, 2026 11:57am

[codecov]

Codecov Report

❌ Patch coverage is 96.61017% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.27%. Comparing base (84d8e2d) to head (85d55f0).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/card.ts	96.61%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #939      +/-   ##
==========================================
+ Coverage   63.57%   68.27%   +4.69%     
==========================================
  Files          13       13              
  Lines         302      290      -12     
  Branches       81       70      -11     
==========================================
+ Hits          192      198       +6     
+ Misses         88       86       -2     
+ Partials       22        6      -16     

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