AGENTS.md + .vscode settings for the monorepo

[ulises-jeremias]

Summary

Agent and editor guidance for contributors/AI.

CNA mapping

CNA: AGENTS.md, .vscode/settings.json.

Acceptance criteria

• AGENTS.md lists stack (uv, Typer, Ruff, Pyright, pytest) and key commands
• VS Code settings recommend Ruff/Pyright extensions

Blocked by

none

Blocks

none

Reference

Parity matrix (workspace): knowledge/create-python-app-parity-matrix.md
Reference repo: https://github.com/Create-Node-App/create-node-app

Parent epic

#2