Iteration 3 task 4: register_refuses_undescribed_composites_end_to_end
pins the store gate's verb surface -- a doc-less root refuses naming
`sma_signal` and the rule, a doc-less named nested composite refuses
naming `inner`, the described shipped example registers (exit codes and
stderr through the C14 contract). The pre-existing twin pin
graph_doc_field_moves_content_id_but_not_identity_id stays green.
Checkpoint note: the loop escalated this task spec-ambiguous because
its plan gate demanded a fully green graph_construct suite while the
op-script register test is known-open until the doc-op task lands (a
plan-sequencing defect, orchestrator's authoring error); the task's own
work was verified green and is committed here, the doc-op task follows.
refs #316
claude
593e233e66