/claim #290

Summary

• Added AWSComprehendClient with AWS SigV4-signed DetectPiiEntities requests and env/constructor credential support.
• Added AWSComprehendRedactor helpers for direct text redaction, message/prompt option redaction, chat endpoint wrapping, text mapping, and stream redaction.
• Exported the new Comprehend API from @arakoodev/edgechains.js/ai.
• Added mocked Vitest coverage and a runnable Jsonnet example for prompt redaction without needing AWS credentials.

Demo

https://github.com/Jorel97/bounty-demo-assets/raw/main/edgechains/edgechains-290-demo.mp4

Validation

• npx tsc -b
• npx vitest run src/ai/src/tests/comprehend/comprehend.test.ts
• npm run dev from JS/edgechains/examples/aws-comprehend-redaction