[DOCS] Add AGENTS.md and WORKFLOW.md

[PPeitsch]

Description

Added \AGENTS.md\ and \WORKFLOW.md\ to provide guidelines and workflows for AI agents contributing to the project.

Type of Change

• Documentation update

Testing

Verified the markdown files render correctly.

Checklist

• I have followed the project's code style (Black, isort, PEP 8)
• My code generates no new warnings
• I have updated the documentation where necessary
• I have run pre-commit hooks before submitting

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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