linrrzqqq opened a new pull request, #68247:
URL: https://github.com/apache/doris/pull/68247

   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary:
   
   When an AI provider returns a malformed embedding response, the adapter may 
call RapidJSON `Begin()`/`End()` on a non-array value. This triggers the 
`IsArray()` assertion in RapidJSON and crashes BE instead of returning an error.
   
   The same risk also exists when adapter parsers call `HasMember()` or 
`GetFloat()` without first validating the JSON value type.
   
   ### How is it fixed?
   
   Validate JSON types before parsing objects, arrays, and numbers. Malformed 
responses now return an error `Status` instead of triggering a RapidJSON 
assertion and crashing BE.
   
   Regression tests are added for all identified crash paths.
   


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