/claim #290

Summary

Adds an AWS Comprehend PII redaction utility to the JavaScript SDK.

What changed

• Added AWSComprehendPIIRedactor in the AI package.
• Supports direct text redaction, chat prompt redaction, chat message redaction, and wrapChat() for endpoint-style chaining before existing chat() calls.
• Uses the official AWS Comprehend client by default, with an injectable detectPiiEntities client for local tests and examples.
• Handles reverse-order redaction so replacing earlier entities does not shift later offsets.
• Adds a credential-free local example in JS/edgechains/examples/aws-comprehend-pii-redaction.

Demo evidence

• Video demo repo: https://github.com/Deivid00007/edgechains-290-demo
• Direct video file: https://github.com/Deivid00007/edgechains-290-demo/blob/master/edgechains_290_demo.mp4
• Credential-free demo evidence comment: https://github.com/arakoodev/EdgeChains/pull/613#issuecomment-4703845771
• Demo output shows the endpoint receiving: Summarize this customer note: [NAME], [EMAIL], called about billing.

The demo does not require AWS credentials, private data, camera access, or any paid service.

Verification

• npx vitest run src/ai/src/tests/comprehend.test.ts - 4 tests passed
• npx tsc -p tsconfig.json --noEmit - passed
• npm run start in JS/edgechains/examples/aws-comprehend-pii-redaction

Example output:

Endpoint received: Summarize this customer note: [NAME], [EMAIL], called about billing.