Brainstorm milestone spec for first-class additive Term::Loop /
Term::Recur (Approach A). De-bundled from the reverted
Iteration-discipline milestone: no structural-guardedness checker,
no Diverge effect — the half-enforced-dichotomy failure that sank
the original bundle is explicitly out of scope. recur has no
non-tail spelling (structural jump, by-construction stack safety).
verify_tail_positions left byte-unchanged; new private
verify_loop_body pass owns recur-tail-position checking. Feature
acceptance: all 3 clauses pass. Grounding-check Step 7.5: PASS,
9 ratified load-bearing assumptions. User-approved.
Brummel
97c1ed1f63