Adding implementations for 3 samples (product return agent, transaction repair agent, json remediation agent)

[petehauge]

Purpose

This pull request adds the following 3 samples:

1. AI Product Return Agent: AI-powered product return system that automates the evaluation of return requests using Azure Logic Apps Standard and Azure OpenAI. Features autonomous decision-making with policy validation, refund calculations, and human escalation.
2. Transaction Repair Agent: Conversational AI agent that helps operations teams diagnose and repair failed work orders through natural chat interaction. Built with Azure Logic Apps Standard and Azure OpenAI, featuring guided workflows, approval management, and ITSM audit logging.
3. JSON Remediation Agent: Autonomous operations agent that repairs malformed JSON records, applies deterministic schema corrections, validates structure, and outputs clean, ingestion-ready payloads with no external service dependencies.

Does this introduce a breaking change?

[ ] Yes
[ X ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ X ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

To test the samples, open the appropriate readme and follow the instructions to deploy and validate the sample.

• AI Product Return Agent Readme
• Transaction Repair Agent Readme
• JSON Remediation Agent

What to Check

Instructions are in the links above on how to validate & what to check that the same is functioning as expected.

Other Information

N/A