Authoring processes

A process definition is plain EDN describing stages and the evidence each one requires. Tickets pin it by content hash, so a definition is a document with an identity rather than a mutable setting.

Start from an interview rather than a blank file:

tik author                      # answer questions; tik writes the definition
tik author --template bug       # start from a finished interview
tik author prompt               # an LLM recipe that yields the answers file