Common Era calendar lineage — live from the database

⚠ ALL DATA ON THIS TIMELINE IS PROPOSED, NOT ACCEPTED — awaiting owner review (spec §11.6). Source: 13 verbatim passages from 3 cited sources.

Each item is a calendar-change node (spec §7.1): every reform, era change, or renaming is its own node, linked into a lineage. Dates shown exactly as the source states them; converted day numbers arrive with the Phase 2 alignment layer.

Legend: era change structural reform renaming (the AD → CE chain)