v0.38.0 — Rune transform consolidation

Across 121 runes, transform() is 3,955 lines. A measurable share of that is not logic — it is dead code, guards that guard nothing, and the same four gestures retyped. Separately, the declarative content model already states more about a rune's authoring syntax than any tool surfaces, and one field of it silently eats authored content.

This milestone removes what is provably inert, names the idioms that are merely repetitive, and closes the two gaps where a declaration exists and does not reach either the author or the runtime.