ppries' README mentioned "@check reviews task split for completeness
and coverage" as a workflow step but the gist's actual workflow.md
never implemented it, and neither did ours. Without a split-review
gate between Phase 5 and Phase 6, an over- or under-split task
surfaces only at Phase 8 final review — after expensive @test and
@make dispatches have already run on a broken split.
Adds Phase 5.5: a short, focused review of the task split as a set,
dispatched only to @check (split is structural / coverage, not
complexity, so @simplify is not involved). The dispatch passes the
absolute paths to plan.md and every task-N.md and asks @check to
evaluate the split against five questions: coverage, no overlap,
single-purpose, integration contracts, testable AC.
Loop limited to 2 cycles (less than the plan-review's 3), with a
BLOCK verdict routing back to Phase 4 when the plan itself does not
decompose cleanly. The phase is explicitly framed as "a quick gate,
not a deep review" — no line-by-line code feedback (there's no code
yet), no design re-litigation (that was Phase 4) — to keep it from
expanding into a second plan review.
No phase renumbering downstream — 5.5 fits between 5 and 6 without
disturbing existing cross-references.