from research import *
s=begin(811,'Eighty-step synthesis checkpoint','Does the grammar transfer to a new complete source family?',{},['C792–810'])
report='# Chronological families: checkpoint C811\n\nEighty steps are complete. BJ now extends the same source-path grammar already used for MT/LXX/SP and Rounded.\n\nThe22-head index and its23-head retained-Kainan comparison are ordered labelled objects. Deleting one position has weight1 in the index, while the supplied BJ chronology deletes57 years; the controlled regular/cumulative Cainan weights remain130/460. No BJ cumulative lifespan is inferred.\n\nThe full secondary deletion ledger is3856→2549→2482→2425 becoming3799→2492→2425. It retains the inherited1307 interval. The apparent2450→2400 reduction is57−7 because the compared starting roles change. The four-node reflection belongs to the separate mixed comparison using original nodes, not to the entire expunged chronology.\n\nThe complete biological and surface Abraham→Conquest paths are100|60|130|285 and111|59|125|280. Both retain575; their internal changes11|−1|−5|−5 sum to zero. Six literal jubilee timestamps regenerate under the49-year encoding. The source’s59-versus70 and142-versus147 tensions remain visible.\n\nTwo290-year partitions,100|60|130 and115|60|115, coarsen the same six-node path. The larger460|1490|460|40 path transfers the existing retained-component Key rule: expanding the final460 to500 reaches Conquest while holding the earlier path fixed.\n\nThe source NT heads5326 and2876 share the2450 duration through35×70=50×49, with their own event roles retained.\n\nNext: integrate these findings with File52c and the prior calendar/shape families, independently review the full account, and finish the100-step record.\n'
a=artifact('deliverables/490d_Chronological_Families_Checkpoint_C811.md',report)
finish(s,{'checkpoint':a},'The transferred grammar explains whole objects in BJ without a universal chronology scalar. The remaining work should consolidate the explanatory map and deliver it clearly.','Freeze the integrated claim map before drafting the final reading artifacts.',{'eighty':811-732+1==80})