Add AWS Comprehend prompt redaction utility

[DYSfu]

/claim #290

Summary

• add an AWSComprehendRedactor utility with an injectable Comprehend-compatible client
• add an AWSComprehendSdkAdapter for callers using the AWS SDK v3 client/command pair
• support direct text redaction, prompt/message redaction, endpoint-style chat() chaining, score/type filters, and custom replacements
• export the utility and public types from the AI package
• add mocked Vitest coverage and a runnable aws-comprehend-redaction example

Validation

• npx vitest run src/ai/src/tests/aws-comprehend/aws-comprehend-redactor.test.ts
• npx tsc -b
• npx prettier --check src/ai/src/lib/aws-comprehend/aws-comprehend-redactor.ts src/ai/src/tests/aws-comprehend/aws-comprehend-redactor.test.ts src/ai/src/index.ts
• cd JS/edgechains/examples/aws-comprehend-redaction && npm install --package-lock=false --ignore-scripts --no-audit --no-fund --progress=false --loglevel=warn && npm run build && npm start

[github-actions]

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[DYSfu]

I have read the Arakoo CLA Document and I hereby sign the CLA

[DYSfu]

recheck

[DYSfu]

Demo showing the AWS Comprehend-compatible redactor example building and redacting EMAIL/PHONE before the prompt reaches an endpoint-style chat client.

edgechains-aws-comprehend-redaction-demo.mp4