a2a: add input schema

[liuzengh]

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[Flash-LHR]

The root command references missing dpskv3.sh, so the documented run path fails. Replace it with the direct examples command or add the script.

中文

根目录命令引用了缺失的 `dpskv3.sh`，因此文档中的运行路径会失败。请改成 examples 直接运行命令，或补上该脚本。

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.79996%. Comparing base (a49795e) to head (1a40571).

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main       #1710         +/-   ##
===================================================
+ Coverage   89.79625%   89.79996%   +0.00370%     
===================================================
  Files            899         899                 
  Lines         145868      145872          +4     
===================================================
+ Hits          130984      130993          +9     
+ Misses          9388        9384          -4     
+ Partials        5496        5495          -1     

Flag	Coverage Δ
unittests	89.79996% <100.00000%> (+0.00370%)	⬆️

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