# Functional spec

External behavior — *what* this project does. One file per spec; each H1 declares an `FS-NNN-<slug>` ID and the body is its contract. Citations from elsewhere in the tree (`§FS-NNN-<slug>.<section>`) resolve into these files.

By convention every spec under this directory is linked from this README so the index stays a complete table of contents. Extra prose, recommended reading order, and conceptual groupings are welcome around the link set.

| ID | Subject |
|---|---|

This index is navigational — citations should target the spec ID directly, never this file.
