feat(adk): support chinese

[meguminnnnnnnnn]

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• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

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[codecov]

Codecov Report

❌ Patch coverage is 52.17391% with 22 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (alpha/08@0e0050a). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
adk/prebuilt/deep/task_tool.go	33.33%	6 Missing and 2 partials ⚠️
adk/prebuilt/deep/deep.go	50.00%	5 Missing and 1 partial ⚠️
adk/config.go	0.00%	2 Missing ⚠️
adk/internal/config.go	60.00%	2 Missing ⚠️
adk/middlewares/filesystem/large_tool_result.go	50.00%	1 Missing and 1 partial ⚠️
adk/middlewares/reduction/large_tool_result.go	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             alpha/08     #730   +/-   ##
===========================================
  Coverage            ?   81.90%           
===========================================
  Files               ?      134           
  Lines               ?    12984           
  Branches            ?        0           
===========================================
  Hits                ?    10634           
  Misses              ?     1574           
  Partials            ?      776           

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