docs(runtime): close J3.2 canonical identity gate

Record the exact f46ddb5c rollback, 8,441-test Release gate, and seven-checkpoint connected lifecycle/reconnect pass. Update the canonical project state and pin J3.3's exact-key App projection-store execution plan.

Co-authored-by: Codex <codex@openai.com>

docs/research/2026-07-25-slice-j3-entity-ownership-inventory.md

@@ -8,6 +8,31 @@ The accepted J2 binary passes 8,428 Release tests with five skips and the
 seven-checkpoint connected lifecycle/reconnect gate at
 `logs/connected-world-gate-20260725-193936/report.json`.
 
+## J3.2 ownership checkpoint
+
+Commit `f46ddb5cdb1e145752bea49aeb1d62bfe71284d3` implements the first
+canonical split:
+
+- `RuntimeEntityDirectory` owns the only active GUID map, exact-incarnation
+  tombstones, reverse local-ID map, session lifetime epoch, per-GUID operation
+  versions, accepted inbound snapshot owner, and parent-relation owner;
+- `RuntimeEntityRecord` owns the presentation-free canonical snapshot,
+  `INSTANCE_TS`, authoritative cell/state/timestamp versions, object clock,
+  PhysicsBody/physics-host facts carried for J5, and Runtime-issued local ID;
+- App's `LiveEntityRecord` is now a projection sidecar around that canonical
+  record;
+- the temporary `ActiveRecordView` is dictionary-shaped only to preserve the
+  large synchronous App call surface during J3.2. It stores no GUID map and
+  resolves every lookup through `RuntimeEntityDirectory`; J3.3 deletes it;
+- Runtime-only ownership/lifetime tests and App source guards protect the
+  boundary.
+
+The checkpoint passes 110 Runtime tests, 3,758 App tests with three skips, and
+8,441 complete Release tests with five skips. Its exact-binary connected gate
+also passes all seven checkpoints with graceful exits, zero render-shadow
+mismatches, and zero pending deltas:
+`logs/connected-world-gate-20260725-200749/report.json`.
+
 At this baseline:
 
 - `LiveEntityRuntime.cs` is 2,866 lines and is referenced by roughly 100 App