Add Agent QA feedback-loop resource

[pranshuchittora]

Summary

• add Agent QA to Chapter 10's AI Engineering Architecture and User Feedback resources
• describe its retained test memory as an application-level feedback-loop example
• link directly to the canonical repository

Why this resource

Agent QA is a source-available QA agent for natural-language web and mobile tests. It retains test intent and evidence across runs and uses failures to improve subsequent test execution, making it a concrete engineering example beside the section's feedback-learning research.

The current license is FSL-1.1-ALv2 and converts to Apache-2.0 after two years. I am affiliated with the project.

Validation

• git diff --check passes.
• The canonical project URL is unique in the repository.
• The new numbered item follows the section's automatic-numbering style.
• Standard awesome-lint reports 45 repository-wide errors; the added line appears in none of its diagnostics.