docs(agents): update AGENTS.md with technology stack and command details

| Coverage | `uv run pytest --cov=src --cov-report=term-missing` | ~2m |

| Add dependency | `uv add <package>` | ~10s |

> If commands fail, verify against pyproject.toml or ask user to update.

> All commands use **Python 3.14**. If commands fail, verify against pyproject.toml or ask user to update.

## Technology Stack

| Component | Technologies |

|-----------|--------------|

| Core | Python 3.14, typer, rich, pydantic, pydantic-sqlite, requests, hishel |

| Specs Crawling | beautifulsoup4, lxml, xlsxwriter, zipinspect |

| AI Module | tdoc-ai (LanceDB, sentence-transformers, Docling, litellm) |

| Conversion | convert-lo (LibreOffice headless) |

| Database | SQLite via pydantic-sqlite |

## File Map