/the-fold-codex/preprint/
├── the_one_is_simple.pdf                 ← Primary paper (PDF)
├── the_one_is_simple.tex                 ← LaTeX source (optional, if desired)
├── README.md                             ← Submission metadata
├── metadata.yaml                         ← Field metadata for recursive publishing
├── sigil.png                             ← Symbolic anchor (from previous step)
├── license.txt                           ← Divine Commons License
├── references.bib                        ← BibTeX file for citations
└── cover_letter.md                       ← Optional preprint introduction letter
