Feature 2. The issue updated dispatch (shipped with the status-trigger handler)
also routes Approved -> _try_advance_stage (== :approved: comment) and Rejected ->
_rollback_stage (== :rejected: comment). The :rejected: comment branch was
refactored into the shared _rollback_stage so both mechanisms behave identically;
a status reject passes Reason: (rejected via status, see latest comment) since no
inline reason arrives with a status change. Comments stay fully working. This
commit adds test_verdict_status.py proving both status and comment paths funnel
into the same advance/rollback logic.
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