fix(physics): #31 update outdoor cell id during transition movement

docs/ISSUES.md

@@ -177,33 +177,6 @@ missing is the plugin-API surface.
 
 ---
 
-## #31 — Low outdoor cell id can go stale after transition movement
-
-**Status:** OPEN
-**Severity:** HIGH
-**Filed:** 2026-04-29
-**Component:** physics / cells / movement
-
-**Description:** Local movement can cross 24m outdoor cell boundaries while
-the low cell id used for outbound full cell id remains stale. This can combine
-correct landblock high bits with the wrong outdoor-cell low byte.
-
-**Root cause / status:** Tracked under Phase L.2e. `CELLARRAY`,
-`CObjCell::find_cell_list`, adjacent-cell checks, and low-cell ownership are
-not fully ported.
-
-**Files:** `src/AcDream.Core/Physics/PhysicsEngine.cs`,
-`src/AcDream.Core/Physics/TransitionTypes.cs`,
-`src/AcDream.App/Input/PlayerMovementController.cs`.
-
-**Research:** `docs/plans/2026-04-29-movement-collision-conformance.md`.
-
-**Acceptance:** Crossing a 24m outdoor-cell seam updates the local resolved
-cell id and the outbound full cell id. Tests cover intra-landblock seams and
-landblock-edge seams.
-
----
-
 ## #32 — Retail edge-slide / cliff-slide / precipice-slide incomplete
 
 **Status:** OPEN
@@ -440,6 +413,18 @@ If hypothesis (a) is correct, this issue effectively rolls into **#28** — the
 
 # Recently closed
 
+## #31 — [DONE 2026-04-29] Low outdoor cell id can go stale after transition movement
+
+**Closed:** 2026-04-29
+**Commit:** `(this commit)`
+**Resolution:** `ResolveWithTransition` now refreshes outdoor cell ownership
+from the resolved world position while the sphere sweep runs. Intra-landblock
+24m outdoor seams update the low cell id, and full-cell callers crossing a
+landblock seam get the destination landblock prefix plus the correct outdoor
+low cell.
+
+---
+
 ## #34 — [DONE 2026-04-29] Missing routine local/server correction diagnostic
 
 **Closed:** 2026-04-29