ceulen v0.1.0 — name reservation

Initial scaffold release. Reserves the npm name.

Ceulen — the Pi coding agent, fully dressed: one bundle extension, one /ceulen config command. Named for Ludolph van Ceulen (π to 35 digits, carved on his tombstone).

Status: pre-release scaffold. No modules yet — wave 1 (notify, cron, references, ponytail, classifier) lands next. Design record in docs/.