Reroll (swipe/regenerate/continue = no-new-user) now deterministically
reapplies the parent user floor's stored bme_recall block in
GENERATE_BEFORE_COMBINE_PROMPTS, bypassing the transaction gate and
runRecall entirely. AFTER_COMMANDS defers no-new-user work to
before-combine. Staleness guard recomputes when the user edited the
floor; settings gate honors plugin/recall disable. Fresh normal sends
are unaffected. Compute machinery retained as fallback.