Summary

• add a Spanish LaTeX entry point that reuses the localized front matter and chapter set
• duplicate the English manual content into frontmatter_es/ and chapters_es/ as the basis for Spanish localization work
• extend the CI matrix with a dedicated Spanish build and verification workflow and document the new locale in the README

Testing

• not run (not requested)

https://chatgpt.com/codex/tasks/task_e_68f38e5fc9b88323b85ba3e05ae0c9a4