Red. A process code states its lettered points once, on the section that
owns them, and every section nested below inherits them; built faithfully,
the nested section is a concept whose body is one heading line (710 of 2 761
on one measured standard), and the two-level directory tree does not carry
the parent either.
Behind `--shell-parent`, off by default: a plan entry whose span holds only
its heading gets `parent_id` naming the nearest preceding entry at a smaller
level whose own span holds text. An empty ancestor is passed over; a shell
with no ancestor holding text gets no parent. The rule reads the plan's level
and order, never the row, so the same outline through the bookmark arm's
route reaches the same parents. The fixture is hand-written.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>