Expand AGENTS.md with comprehensive project documentation

[Copilot]

• Analyze current repository structure and development practices
• Update AGENTS.md with project structure information
• Add testing guidelines section
• Add code style and conventions section
• Add quality standards section
• Add CI/CD pipelines information
• Add pre-finalization quality checks section
• Add boundaries and guardrails for AI agents
• Validate markdown formatting
• Run build and tests to ensure no regressions
• Final review and code quality checks
• Address PR feedback: simplify folder structure documentation
• Address PR feedback: expand XML documentation requirements to all members

Changes made:

• Removed specific file listings from src/ and test/ folders (they evolve quickly)
• Updated XML documentation requirement to include internal and private members, not just public

Original prompt

---

This section details on the original issue you should resolve

<issue_title>AGENTS.md Updating</issue_title>
<issue_description>The AGENTS.md file should be updated to include standard information about the project such as:

• Project Structure (folder layout also containing critical files)
• Testing Guidelines
  • Test Structure:
    • All test source files named [Component]Tests.cpp
    • Use the AAA (Arrange, Act, Assert) pattern
    • Use the TestMethod_Scenario_ExpectedBehavior method naming convention
  • Test Conventions
    • All new features tested
    • High code coverage
    • Test both success and failure paths
  • Test Requirements
    • All tests must pass before merging
    • No warnings allowed
    • Tests should be isolated and not depend on execution order
• Code Style and Conventions
  • Naming Conventions
  • Code Organization
  • Best Practices
  • Code Quality
• Quality Standards
  • Static Analysis
  • Documentation
  • Spelling and Markdown
• CI/CD Pipelines
• Pre-Finalization Quality Checks
  • Build and Test Validation
  • Code Review
  • Security Scanning
• Boundaries and Guardrails
  • What AI Agents Should NEVER Do
  • What AI Agents Should ALWAYS Do
  • What AI Agents Should ASK About

Also consider adding other information appropriate for an AGENTS.md file.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes AGENTS.md Updating #4

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.