Use File.generated for CSS/Javascript files

[daizutabi]

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[codecov]

Codecov Report

Attention: Patch coverage is 93.75000% with 1 line in your changes missing coverage. Please review.

Project coverage is 97.83%. Comparing base (846184f) to head (228fdbc).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/mkapi/plugin.py	93.75%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #189      +/-   ##
==========================================
+ Coverage   97.77%   97.83%   +0.06%     
==========================================
  Files          12       12              
  Lines        2334     2309      -25     
==========================================
- Hits         2282     2259      -23     
+ Misses         52       50       -2     

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