The issue body's milestone-relative ordinals ("issue 3", "issue 5") become
unreadable once the milestone closes. Resolved against the Zeitstrahl milestone:
issue 3 = #775 (CRUD API: service/controller/DTO), issue 5 = #777 (assembly
endpoint with the per-person filter). Mapping anchored by issue 6 = #778
(date-label helper) and issue 9 = #781 (curator forms) in #774's forward notes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add timeline/ to the root and backend package tables, TimelineEvent to the
domain-model entity tables, TimelineEvent/EventType/Zeitstrahl to the
glossary, a new l3-backend-timeline C4 component diagram, and the
timeline_events table + two join tables (with their CHECKs and cascade FKs)
to the db-orm and db-relationships ER diagrams. Bumps the db-orm snapshot to
V77.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
