docs(architecture): close live animation slice

Record the shipped presentation owner, exact frame-handoff lifetime, retail short-frame behavior, current GameWindow metrics, and Slice 3 as the next structural boundary.

docs/plans/2026-07-21-gamewindow-slice-2-live-animation-presentation.md

@@ -1,9 +1,14 @@
 # GameWindow Slice 2 — live animation presentation ownership
 
-**Status:** Approved for execution 2026-07-21.
+**Status:** Complete 2026-07-21. Automated and three-agent review gates pass;
+connected visual regression gate is carried to the final campaign gate.
 **Parent program:** [`docs/architecture/code-structure.md`](../architecture/code-structure.md), Slice 2.
 **Baseline:** `9ad8113c`; `GameWindow.cs` is 14,912 lines, 278 fields, and
 191 methods before this slice.
+**Result:** `GameWindow.cs` is 14,546 lines, 277 fields, and 190 methods.
+The slice also closed stale-schedule ABA across replacement, appearance
+rebinding, static rebind, and borrowed sequencer buffers. Forty-one focused
+Release tests and the full 6,575-pass / 5-skip Release suite are green.
 **Behavior rule:** This is an ownership extraction over the accepted R6 object
 frame plus one named-retail conformance correction: short AnimFrames retain
 the prior/rest pose of trailing CPartArray parts. It must not otherwise change
@@ -335,6 +340,12 @@ Additional invariants:
 
 ### Cross-owner order and reconciliation
 
+The presenter-level portions below are covered by Slice 2. The full
+instrumented owner-order trace and non-advancing spatial-reconcile assertion
+remain assigned to Slice 6, where the update sequence becomes one testable
+orchestrator instead of a `GameWindow` method. Slice 2 preserves that order but
+does not claim an end-to-end orchestrator test prematurely.
+
 - One instrumented object-frame test pins presenter, children, static hooks,
   fades, ordinary hook drain, effect roots, emitters, lights, particles, and
   scripts. A PES-created particle first simulates on the following frame.