feat(adk): optimize filesystem

[meguminnnnnnnnn]

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[codecov]

Codecov Report

❌ Patch coverage is 42.85714% with 8 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (alpha/08@2adf661). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
adk/middlewares/filesystem/filesystem.go	42.85%	5 Missing and 3 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             alpha/08     #751   +/-   ##
===========================================
  Coverage            ?   79.74%           
===========================================
  Files               ?      145           
  Lines               ?    15762           
  Branches            ?        0           
===========================================
  Hits                ?    12569           
  Misses              ?     2219           
  Partials            ?      974           

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