Introduce LiveEntityRuntime as the canonical owner of each accepted server-object incarnation, stable local identity, timestamped state, parent relations, runtime components, and exactly-once teardown. Split logical registration from rebucketing so pending landblocks, equipment attachment, pickup re-entry, and GUID replacement reuse the same entity and effect owners.
Keep canonical materialized and visible target/radar views distinct, preserve retail leave_world versus exit_world semantics, gate root simulation while cell-less, and track transitional pre-Create F754 owners through delete and session reset. Remove stale-spawn rehydration and make GpuWorldState spatial-only for live objects.
Add lifecycle, generation, pending, unload, attachment, event-publication, local-ID, rollback, and effect-cleanup coverage; update architecture, milestones, memory, and the divergence register.
Co-Authored-By: Codex <noreply@openai.com>