docs(runtime): close canonical entity object lifetime

docs/plans/2026-07-24-modern-runtime-architecture.md

@@ -2,15 +2,16 @@
 
 **Date:** 2026-07-24
 
-**Status:** Slices A–I and J0–J3.5 are complete. Flat-authoritative collision, zero-
+**Status:** Slices A–I and J0–J3 are complete. Flat-authoritative collision, zero-
 allocation resolve scratch, parsed-graph removal, connected correctness/
 lifetime acceptance, and Slice-I closeout landed 2026-07-25. Slices F–L were
 explicitly approved 2026-07-24. Slice J0–J1 established the enforced Runtime
 boundary and borrowed contract seam; J2 moved canonical session/transport
-lifetime and ordered inbound routing; J3.1–J3.5 moved canonical entity identity
+lifetime and ordered inbound routing; J3.1–J3.6 moved canonical entity identity
 and object-table lifetime to Runtime, exact graphical projection identity to
 App, and one ordered canonical entity/object stream plus direct views to all
-hosts. J3.6 adversarial lifetime closeout is the active execution point.
+hosts and closed the failure-safe owner ledger. J4 gameplay-state lifetime
+groups are the active execution point.
 
 **Scope:** Reconcile and sequence the existing Modern Pipeline (`MP`) and
 Linux/headless (`LH`) tracks using the 2026-07-24 connected performance audit.
@@ -1251,16 +1252,20 @@ gameplay before removing every production parsed collision graph. Slice I7
 passes 8,413 Release tests / 5 skips plus both exact-binary connected routes;
 every stable checkpoint reports zero retained parsed collision graphs. J1 is
 complete with borrowed contracts, and J2 owns canonical session/transport
-lifetime plus ordered inbound routing in Runtime. J3.1–J3.5 are complete:
+lifetime plus ordered inbound routing in Runtime. J3.1–J3.6 are complete:
 Runtime owns the only entity GUID/incarnation/local-ID directory, and App's
 materialized sidecars plus spatial/presentation worksets carry exact
 `RuntimeEntityKey`. One `RuntimeEntityObjectLifetime` also owns the exact live
 `ClientObjectTable`; App is a synchronous borrower. Exact `ce3ac310` adds the
 one per-generation canonical entity/object delta stream, issues Runtime
 identity before App hydration, and gives graphical/no-window hosts the same
-direct borrowed views. Its 8,472-test / 5-skip Release suite and exact-binary
-seven-checkpoint connected route pass. J3.6 adversarial failure and zero-owner
-closeout is the current execution point.
+direct borrowed views. J3.6 at `119b7c11` retains exact teardown receipts
+before fallible callbacks, serializes re-entrant observation within the
+committing call, protects every accepted channel by mutation version, and
+requires reset/direct disposal to converge the complete ownership ledger to
+zero. Its 8,484-test / 5-skip Release suite, exact-binary lifecycle/reconnect
+gate, and canonical nine-stop route pass. J4 gameplay-state lifetime groups
+are the current execution point.
 Evidence:
 [`../research/2026-07-25-slice-g5-production-profile.md`](../research/2026-07-25-slice-g5-production-profile.md)
 and
@@ -1278,6 +1283,8 @@ and
 and
 [`../research/2026-07-26-slice-j3-5-canonical-delta-stream.md`](../research/2026-07-26-slice-j3-5-canonical-delta-stream.md)
 and
+[`../research/2026-07-26-slice-j3-6-lifetime-closeout.md`](../research/2026-07-26-slice-j3-6-lifetime-closeout.md)
+and
 [`2026-07-25-modern-runtime-slice-j.md`](2026-07-25-modern-runtime-slice-j.md).
 
 The intended order is therefore:
@@ -1292,7 +1299,7 @@ honest metrics + committed baselines        (A — exit criteria block C)
   -> delta GPU submission                   (G)
   -> residual frame cleanup                 (H-a, H-b, H-c)
   -> flat collision assets                  (I — COMPLETE)
-  -> presentation-independent runtime       (J — CURRENT at J3.6)
+  -> presentation-independent runtime       (J — CURRENT at J4)
   -> Linux/headless/multi-session           (K)
   -> evidence-gated GPU jobs                (L)
 ```