docs(runtime): close per-session physics ownership

Record J5.5 production SHA, complete Release baseline, exact-binary lifecycle/reconnect and nine-stop collision/movement evidence, and rollback. Synchronize architecture, roadmap, milestones, AGENTS/CLAUDE, and advance the active program to J5.6 projectile runtime.

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

AGENTS.md

@@ -295,8 +295,15 @@ input and direct Runtime commands borrow the same state, and outbound
 MTS/jump/AP cadence lives in Runtime. Runtime tests pass 303/303, App tests
 pass 3,716/3 skips, the complete Release suite passes 8,575/5 skips, and both
 the exact-binary lifecycle/reconnect and canonical nine-stop movement gates
-pass with graceful exits and zero failures. J5.5 per-session physics and
+pass with graceful exits and zero failures. J5.5 is complete at `7e6033d0`:
-remote simulation is active.
+`RuntimePhysicsState` owns the sole per-session engine, production cache/cell
+graph, transition scratch, shadow registry, typed collision admissions,
+canonical body/host/remote components, ordinary/remote worksets, simulation,
+and full-cell commits. App publishes prepared collision and projects committed
+snapshots only. Runtime tests pass 314/314, App tests pass 3,718/3 skips, the
+complete Release suite passes 8,588/5 skips, and both exact-binary
+lifecycle/reconnect and canonical nine-stop collision/movement gates pass
+with graceful exits and zero failures. J5.6 projectile runtime is active.
 J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 J1's rollback is
@@ -332,6 +339,8 @@ J5.3's rollback is
 `git revert 20df9d155db50706a42420d60a9b15861cf4bfe7`.
 J5.4's rollback is
 `git revert aa3f4a60f87f2cbebc3d8ecd5e33d779b7fb13c1`.
+J5.5's rollback is
+`git revert 7e6033d0adcd0b572c20e89dd275746fb442d52f`.
 Slice H's retained UI/frame, bounded-light, and pooled/borrowed/direct network
 work is complete; the exact seven-checkpoint connected lifecycle/reconnect gate
 passes. Slice I is closed in
@@ -349,7 +358,9 @@ closeout is
 is `docs/research/2026-07-26-slice-j5-2-interaction-transactions.md`; J5.3
 closeout is `docs/research/2026-07-26-slice-j5-3-combat-magic-intent.md`; J5.4
 closeout is
-`docs/research/2026-07-26-slice-j5-4-local-movement-ownership.md`. The exact G4
+`docs/research/2026-07-26-slice-j5-4-local-movement-ownership.md`; J5.5
+closeout is
+`docs/research/2026-07-26-slice-j5-5-physics-remote-ownership.md`. The exact G4
 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:

CLAUDE.md

@@ -293,8 +293,15 @@ input and direct Runtime commands borrow the same state, and outbound
 MTS/jump/AP cadence lives in Runtime. Runtime tests pass 303/303, App tests
 pass 3,716/3 skips, the complete Release suite passes 8,575/5 skips, and both
 the exact-binary lifecycle/reconnect and canonical nine-stop movement gates
-pass with graceful exits and zero failures. J5.5 per-session physics and
+pass with graceful exits and zero failures. J5.5 is complete at `7e6033d0`:
-remote simulation is active.
+`RuntimePhysicsState` owns the sole per-session engine, production cache/cell
+graph, transition scratch, shadow registry, typed collision admissions,
+canonical body/host/remote components, ordinary/remote worksets, simulation,
+and full-cell commits. App publishes prepared collision and projects committed
+snapshots only. Runtime tests pass 314/314, App tests pass 3,718/3 skips, the
+complete Release suite passes 8,588/5 skips, and both exact-binary
+lifecycle/reconnect and canonical nine-stop collision/movement gates pass
+with graceful exits and zero failures. J5.6 projectile runtime is active.
 J0's rollback is
 `git revert b632672e5ccabfb44c551e08f1c411ab2669c44a`.
 J1's rollback is
@@ -330,6 +337,8 @@ J5.3's rollback is
 `git revert 20df9d155db50706a42420d60a9b15861cf4bfe7`.
 J5.4's rollback is
 `git revert aa3f4a60f87f2cbebc3d8ecd5e33d779b7fb13c1`.
+J5.5's rollback is
+`git revert 7e6033d0adcd0b572c20e89dd275746fb442d52f`.
 Slice H's retained UI/frame, bounded-light, and pooled/borrowed/direct network
 work is complete; the exact seven-checkpoint connected lifecycle/reconnect gate
 passes. Slice I is closed in
@@ -347,7 +356,9 @@ closeout is
 is `docs/research/2026-07-26-slice-j5-2-interaction-transactions.md`; J5.3
 closeout is `docs/research/2026-07-26-slice-j5-3-combat-magic-intent.md`; J5.4
 closeout is
-`docs/research/2026-07-26-slice-j5-4-local-movement-ownership.md`. The exact G4
+`docs/research/2026-07-26-slice-j5-4-local-movement-ownership.md`; J5.5
+closeout is
+`docs/research/2026-07-26-slice-j5-5-physics-remote-ownership.md`. The exact G4
 visual rollback
 is `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`; do not revert G3 or
 the portal-warmup corrections. Evidence:

docs/README.md

@@ -14,7 +14,7 @@ banner cannot silently override the current program state.
   [`plans/2026-07-23-world-interaction-completion.md`](plans/2026-07-23-world-interaction-completion.md).
   The eight-slice `GameWindow` decomposition and its connected visual matrix
   are complete.
-- **Current active engineering program:** Slices A–I, J0–J4, and J5.1–J5.4 of
+- **Current active engineering program:** Slices A–I, J0–J4, and J5.1–J5.5 of
   [`plans/2026-07-24-modern-runtime-architecture.md`](plans/2026-07-24-modern-runtime-architecture.md)
   are complete. Production uses prepared world/collision packages, typed
   residence, retained render-scene/delta submission, bounded frame owners, and
@@ -22,8 +22,9 @@ banner cannot silently override the current program state.
   Runtime owns canonical session/transport, entity/object lifetime, J4
   gameplay state, selection/interaction transactions, and combat/magic intent.
   App materialized projections and retained widgets borrow exact Runtime
-  identity and action owners. J5.5 per-session physics and remote simulation is
+  identity and action owners. Runtime also owns the sole per-session physics,
-  next in
+  collision, body/host, remote simulation, and cell-commit graph. J5.6
+  projectile runtime is next in
   [`plans/2026-07-26-modern-runtime-slice-j5.md`](plans/2026-07-26-modern-runtime-slice-j5.md).
 - **Completed gates:** R6 locomotion/collision/projectile/teleport/radar and
   the final two-client portal-out/materialization observer comparison (`#218`).
@@ -33,12 +34,12 @@ banner cannot silently override the current program state.
   `#116` (two narrowed slide-response cases), and divergence rows TS-50/TS-51.
 - **Active engineering track:** complete Slice J's coherent Runtime lifetime
   groups, then build the approved Linux/headless multi-session host in Slice K.
-  J5.4's exact rollback is
+  J5.5's exact rollback is
-  `git revert aa3f4a60f87f2cbebc3d8ecd5e33d779b7fb13c1`.
+  `git revert 7e6033d0adcd0b572c20e89dd275746fb442d52f`.
 - **Divergence audit:** 178 active rows — IA 17, AD 37, AP 85, TS 34,
   and UN 5 — plus the retained retired TS-37 history note.
-- **Latest automated baseline:** Release build succeeds; 8,575 tests pass and
+- **Latest automated baseline:** Release build succeeds; 8,588 tests pass and
-  five are intentionally skipped. The exact J5.4 connected lifecycle/reconnect
+  five are intentionally skipped. The exact J5.5 connected lifecycle/reconnect
   gate completed two sessions and seven checkpoints, and its canonical
   nine-stop movement route completed all destinations and movement exercises,
   with graceful zero-code exits and zero failures.

docs/architecture/acdream-architecture.md

@@ -231,7 +231,12 @@ src/
       InteractionState.cs -> presentation-free cursor-target mode state
       RuntimeInteractionTransactionState.cs -> use/appraisal/pickup FIFO,
                                                exact approach and busy borrower
-    -> J3–J4 and J5.1–J5.4 complete; J5.5 per-session physics active
+    Physics/
+      RuntimePhysicsState.cs -> per-session engine/cache/scratch/shadows,
+                                collision receipts, bodies/hosts/worksets
+      RuntimeRemotePhysicsUpdater.cs -> presentation-free remote simulation
+      RuntimeOrdinaryPhysicsUpdater.cs -> presentation-free object simulation
+    -> J3–J4 and J5.1–J5.5 complete; J5.6 projectile runtime active
     -> may reference Core, Core.Net, Content, and Plugin.Abstractions only
     -> must never reference App, UI, Silk.NET, OpenAL, Arch, or ImGui
   
@@ -507,8 +512,13 @@ queries, transport, animation, sound, particles, and response text
 (`20df9d15`). `RuntimeLocalPlayerMovementState` owns the exact local movement
 controller, construction seam, autorun latch, typed view, and terminal ledger;
 graphical input and direct commands borrow that owner, and outbound
-MTS/jump/AP cadence lives in Runtime (`aa3f4a60`). J5.5 next moves per-session
+MTS/jump/AP cadence lives in Runtime (`aa3f4a60`). One
-physics and remote simulation.
+`RuntimePhysicsState` now owns the per-session engine, production cache/cell
+graph, transition scratch, shadow registry, typed collision admissions,
+canonical body/host/remote components, ordinary/remote worksets, simulation,
+and full-cell commits. App supplies prepared collision and animation/shape
+inputs, then projects committed snapshots (`7e6033d0`). J5.6 next moves the
+projectile component and prediction lifecycle.
 
 `GpuWorldState` owns spatial buckets only and retains the exact projection key
 through loaded/pending movement, landblock retirement/reload, origin recenter,

docs/architecture/code-structure.md

@@ -474,10 +474,11 @@ useful ordering seam, but its ownership status is **partial**.
 | Inbound/object-frame order | **Complete App orchestration** | `UpdateFrameOrchestrator` owns the complete typed host phase graph; `RetailInboundEventDispatcher`, `RetailLiveFrameCoordinator`, `LiveObjectFrameController`, `LiveSpatialPresentationReconciler`, streaming/input/teleport/player-mode/camera owners preserve the accepted order. `GameWindow.OnUpdate` is one profiler-scoped handoff (`e91f3102`). |
 | World reveal | **Complete** | `WorldRevealCoordinator` owns login/portal readiness, generation quiescence, and the exact streaming destination reservation. Login auto-entry and portal completion close only their active generation; stale completion cannot clear its replacement. Delayed portals retain the authored tunnel and centered retail wait notice rather than force-revealing incomplete content. Quiesced destination projections may become spatially resident for renderer preparation while all availability-gated gameplay consumers stay closed. |
 | Retained gameplay UI | **Mostly complete feature ownership** | `RetailUiRuntime` and focused panel/controllers own layout and behavior. `GameWindow.OnLoad` still performs substantial service composition, which is allowed until the final composition cleanup. |
-| Action/combat/magic/movement | **J5.1–J5.4 complete; J5.5 active** | Runtime `RuntimeActionState` owns the exact selection, temporary target mode, interaction transactions, combat attack/target/mode, and spell-cast intent children. Interaction owns use/appraisal/pickup identity, ordered FIFO, and exact post-arrival token while borrowing J4's sole busy gate. `RuntimeLocalPlayerMovementState` owns the exact local controller, construction seam, autorun latch, typed view, and outbound MTS/jump/AP cadence. Retained bars, physical input, world/content queries, transport, lighting, toasts, drag/drop, effects, and animation remain App adapters/presentation. No parallel App owner remains (`b298f99f`, `f5f7b417`, `20df9d15`, `aa3f4a60`). |
+| Action/combat/magic/movement | **J5.1–J5.4 complete** | Runtime `RuntimeActionState` owns the exact selection, temporary target mode, interaction transactions, combat attack/target/mode, and spell-cast intent children. Interaction owns use/appraisal/pickup identity, ordered FIFO, and exact post-arrival token while borrowing J4's sole busy gate. `RuntimeLocalPlayerMovementState` owns the exact local controller, construction seam, autorun latch, typed view, and outbound MTS/jump/AP cadence. Retained bars, physical input, world/content queries, transport, lighting, toasts, drag/drop, effects, and animation remain App adapters/presentation. No parallel App owner remains (`b298f99f`, `f5f7b417`, `20df9d15`, `aa3f4a60`). |
+| Physics/remote simulation | **J5.5 complete** | `RuntimePhysicsState` owns one per-session engine, production cache/cell graph, transition scratch, shadow registry, typed collision admissions, canonical bodies/hosts/remotes, keyed ordinary/remote worksets, simulation, and cell commits. App streaming supplies immutable prepared collision; animation/shape adapters supply graphical inputs and project committed snapshots only (`7e6033d0`). |
 | Landblock presentation | **Complete** | `LandblockBuildFactory` owns the captured-origin DAT transaction; concrete render/physics/DAT-static publishers and `LandblockPresentationPipeline` own typed-meter publication and exact retryable retirement. `StreamingController` owns stable destination/control/unload/Near/Far queues and destination reservation. CPU mesh-cache restaging requires an exact live owner. `StreamingOriginRecenterCoordinator` serializes old-window retirement with teleport/session origin lifetimes. `GameWindow` retains construction and one pipeline field only (`c79d0a49`, closeout `4a205a3e`; Slice E closeout `91e82c3c`). |
 | Render-frame orchestration | **Complete** | `RenderFrameOrchestrator` owns the GPU-flight, resource, world/PView/shared-alpha, private-presentation, diagnostics, screenshot, and recovery graph. `GameWindow.OnRender` takes one logical window-size snapshot and performs one immutable handoff (`9d7df1bf`). |
-| Unified `GameEntity` | **Slice J active at J5.5** | Canonical identity, retained-object lifetime, direct views, ordered entity/object deltas, J4 gameplay state, and J5.1–J5.4 action/combat/magic/movement state share failure-safe Runtime owners while exact graphical sidecars stay in App. J5.5–J7 move physics/projectiles and remaining world authority before one Runtime composition root. |
+| Unified `GameEntity` | **Slice J active at J5.6** | Canonical identity, retained-object lifetime, direct views, ordered entity/object deltas, J4 gameplay state, J5.1–J5.4 action/combat/magic/movement state, and J5.5 physics/remote simulation share failure-safe Runtime owners while exact graphical sidecars stay in App. J5.6–J7 move projectiles and finish cleanup before one Runtime composition root. |
 
 ### 4.3 Revised extraction sequence
 

docs/plans/2026-04-11-roadmap.md

@@ -1,6 +1,6 @@
 # acdream — strategic roadmap
 
-**Status:** Living document. Updated 2026-07-26. **M3 landed; M4 is active.** M3's retail casting/UI, R6 locomotion/collision/projectile/teleport/radar rebaseline, deterministic fresh-login/portal world lifecycle, and final two-client portal observer flow are user-gated. All eight slices of the behavior-preserving ownership campaign in [`docs/architecture/code-structure.md`](../architecture/code-structure.md), their automated closeout, and the user's connected visual matrix are complete. Modern Runtime J3 canonical entity/object lifetime and J4 gameplay-state ownership are closed at `89e6b207`; J5.1 canonical selection/combat/target-mode ownership is closed at `b298f99f`, J5.2 interaction transactions at `f5f7b417`, J5.3 combat/magic intent at `20df9d15`, and J5.4 local movement/outbound cadence at `aa3f4a60`. J5.5 per-session physics and remote simulation is active. Issue #225's lifestone/particle alpha comparison remains a separate rendering visual gate.
+**Status:** Living document. Updated 2026-07-26. **M3 landed; M4 is active.** M3's retail casting/UI, R6 locomotion/collision/projectile/teleport/radar rebaseline, deterministic fresh-login/portal world lifecycle, and final two-client portal observer flow are user-gated. All eight slices of the behavior-preserving ownership campaign in [`docs/architecture/code-structure.md`](../architecture/code-structure.md), their automated closeout, and the user's connected visual matrix are complete. Modern Runtime J3 canonical entity/object lifetime and J4 gameplay-state ownership are closed at `89e6b207`; J5.1 canonical selection/combat/target-mode ownership is closed at `b298f99f`, J5.2 interaction transactions at `f5f7b417`, J5.3 combat/magic intent at `20df9d15`, J5.4 local movement/outbound cadence at `aa3f4a60`, and J5.5 per-session physics/remote simulation at `7e6033d0`. J5.6 projectile runtime is active. Issue #225's lifestone/particle alpha comparison remains a separate rendering visual gate.
 **Purpose:** One source of truth for where the project is and where it's going. Every observed defect or missing feature has a named phase that owns it; when something looks wrong in-game, look here to find the phase that'll address it. Implementation details live in per-phase specs under `docs/superpowers/specs/`, not in this file.
 
 ---
@@ -1759,7 +1759,12 @@ port in any phase — no separate listing here.
 > and App input plus direct commands borrow it. Its 303 Runtime tests, 3,716
 > App tests / 3 skips, 8,575-test / 5-skip complete Release suite,
 > exact-binary lifecycle/reconnect gate, and canonical nine-stop movement
-> route pass. J5.5 per-session physics and remote simulation is active.
+> route pass. J5.5 is complete at `7e6033d0`: Runtime owns the sole
+> engine/cache/scratch/shadow/collision/body/host/remote/workset graph while
+> App publishes prepared collision and projects committed snapshots. Its 314
+> Runtime tests, 3,718 App tests / 3 skips, 8,588-test / 5-skip complete
+> Release suite, exact-binary lifecycle/reconnect gate, and canonical
+> nine-stop collision/movement route pass. J5.6 projectile runtime is active.
 > The historical exact cutover
 > rollback remains
 > `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`. Slice H is complete:

docs/plans/2026-05-12-milestones.md

@@ -233,8 +233,13 @@ residency is `0/0/0` at every stable checkpoint and teardown converges. Slice I
   view, and outbound MTS/jump/AP cadence; App input and direct commands borrow
   it. Its 303 Runtime tests, 3,716 App tests / 3 skips, 8,575 full Release
   tests / 5 skips, exact-binary lifecycle/reconnect route, and canonical
-  nine-stop movement route pass. J5.5 per-session physics and remote
+  nine-stop movement route pass. J5.5 completed at `7e6033d0`: Runtime owns
-  simulation is active under
+  one per-session engine/cache/cell graph/scratch/shadow/collision admission
+  graph plus canonical bodies, hosts, remotes, worksets, simulation, and cell
+  commits; App publishes prepared collision and projects committed snapshots.
+  Its 314 Runtime tests, 3,718 App tests / 3 skips, 8,588 full Release tests /
+  5 skips, exact-binary lifecycle/reconnect route, and canonical nine-stop
+  collision/movement route pass. J5.6 projectile ownership is active under
   [`2026-07-25-modern-runtime-slice-j.md`](2026-07-25-modern-runtime-slice-j.md).
 Slice-I closeout evidence is
 [`../research/2026-07-25-slice-i7-closeout.md`](../research/2026-07-25-slice-i7-closeout.md).
@@ -264,6 +269,8 @@ Slice-J5.3 closeout evidence is
 [`../research/2026-07-26-slice-j5-3-combat-magic-intent.md`](../research/2026-07-26-slice-j5-3-combat-magic-intent.md).
 Slice-J5.4 closeout evidence is
 [`../research/2026-07-26-slice-j5-4-local-movement-ownership.md`](../research/2026-07-26-slice-j5-4-local-movement-ownership.md).
+Slice-J5.5 closeout evidence is
+[`../research/2026-07-26-slice-j5-5-physics-remote-ownership.md`](../research/2026-07-26-slice-j5-5-physics-remote-ownership.md).
 The historical exact G4 visual rollback remains
 `git revert ef1d263337997bb030eadb7b8e71d73dc659907a`.
 

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

@@ -2,7 +2,7 @@
 
 **Date:** 2026-07-24
 
-**Status:** Slices A–I, J0–J4, and J5.1–J5.4 are complete. Flat-authoritative collision, zero-
+**Status:** Slices A–I, J0–J4, and J5.1–J5.5 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
@@ -16,10 +16,10 @@ ownership into Runtime at `011efbea`; J4.3 moved the coupled magic/player-sheet
 owner into Runtime at `d02a12ce`; J4.4 moved character settings/projections
 and the shared typed state-command seam at `dcb61efb`; J4.5 closed canonical
 gameplay-state ownership at `89e6b207`. J5 movement, physics, interaction,
-and combat ownership is active at J5.5 after canonical action state
+and combat ownership is active at J5.6 after canonical action state
 (`b298f99f`), interaction transactions (`f5f7b417`), and combat/magic intent
-(`20df9d15`), and local movement/outbound cadence (`aa3f4a60`) moved to
+(`20df9d15`), local movement/outbound cadence (`aa3f4a60`), and per-session
-Runtime.
+physics/remote simulation (`7e6033d0`) moved to Runtime.
 
 **Scope:** Reconcile and sequence the existing Modern Pipeline (`MP`) and
 Linux/headless (`LH`) tracks using the 2026-07-24 connected performance audit.
@@ -1277,8 +1277,7 @@ single Runtime shortcut/spellbook/inventory owners, graphical/no-window
 command parity, failure-safe combined ledger, 8,544-test Release suite,
 exact-binary lifecycle/reconnect gate, and canonical nine-stop route pass.
 J5 movement/physics/interaction/combat ownership is the current execution
-point. J5.1–J5.4 are complete; J5.5 per-session physics and remote simulation
+point. J5.1–J5.5 are complete; J5.6 projectile runtime is active.
-is active.
 Evidence:
 [`../research/2026-07-25-slice-g5-production-profile.md`](../research/2026-07-25-slice-g5-production-profile.md)
 and

docs/plans/2026-07-25-modern-runtime-slice-j.md

@@ -306,14 +306,21 @@ construction seam, autorun latch, typed view, and outbound MTS/jump/AP cadence;
 App input and direct commands borrow the same owner. Its 303 Runtime tests,
 3,716 App tests / 3 skips, 8,575 complete Release tests / 5 skips,
 exact-binary lifecycle/reconnect gate, and canonical nine-stop movement route
-pass. J5.5 per-session physics and remote simulation is next. Evidence:
+pass. J5.5 completed at `7e6033d0`: Runtime owns the per-session engine/cache/
+scratch/shadow/collision/body/host/remote/workset graph; App publishes
+prepared collision and projects committed snapshots. Its 314 Runtime tests,
+3,718 App tests / 3 skips, 8,588 complete Release tests / 5 skips,
+exact-binary lifecycle/reconnect gate, and canonical nine-stop collision/
+movement route pass. J5.6 projectile runtime is next. Evidence:
 [`../research/2026-07-26-slice-j5-1-canonical-action-state.md`](../research/2026-07-26-slice-j5-1-canonical-action-state.md)
 and
 [`../research/2026-07-26-slice-j5-2-interaction-transactions.md`](../research/2026-07-26-slice-j5-2-interaction-transactions.md)
 and
 [`../research/2026-07-26-slice-j5-3-combat-magic-intent.md`](../research/2026-07-26-slice-j5-3-combat-magic-intent.md)
 and
-[`../research/2026-07-26-slice-j5-4-local-movement-ownership.md`](../research/2026-07-26-slice-j5-4-local-movement-ownership.md).
+[`../research/2026-07-26-slice-j5-4-local-movement-ownership.md`](../research/2026-07-26-slice-j5-4-local-movement-ownership.md)
+and
+[`../research/2026-07-26-slice-j5-5-physics-remote-ownership.md`](../research/2026-07-26-slice-j5-5-physics-remote-ownership.md).
 
 - Move presentation-free movement interpretation, authoritative/predicted
   physics state, selection identity, approach/use transactions, combat intent,

docs/plans/2026-07-26-modern-runtime-slice-j5.md

@@ -1,6 +1,6 @@
 # Modern runtime Slice J5 — movement, physics, interaction, and combat
 
-**Status:** ACTIVE — J5.1–J5.4 complete; J5.5 next
+**Status:** ACTIVE — J5.1–J5.5 complete; J5.6 next
 **Parent:** `2026-07-25-modern-runtime-slice-j.md`, J5
 **Production base:** `2c67a2c3`
 **Authorization:** the user approved Slices F–L, including the Slice J
@@ -89,8 +89,8 @@ commands to Runtime. The camera may not write the player heading directly.
 | J5.2 interaction transactions | complete | `f5f7b4177f449ebcad9724bfea263ef73ab60255`; one Runtime transaction owner; 197 Runtime tests, 3,775 App tests / 3 skips, 8,561 complete Release tests / 5 skips, exact-binary connected lifecycle/reconnect pass |
 | J5.3 combat and magic intent | complete | `20df9d155db50706a42420d60a9b15861cf4bfe7`; exact Runtime attack/mode/target/cast owners; 223 Runtime tests, 3,754 App tests / 3 skips, 8,566 complete Release tests / 5 skips, exact-binary connected lifecycle/reconnect pass |
 | J5.4 local movement and outbound cadence | complete | `aa3f4a60f87f2cbebc3d8ecd5e33d779b7fb13c1`; one Runtime movement/controller/cadence owner; 303 Runtime tests, 3,716 App tests / 3 skips, 8,575 complete Release tests / 5 skips, exact-binary lifecycle/reconnect and nine-stop movement gates pass |
-| J5.5 per-session physics and remote simulation | active | engine/scratch/shadows/remote canonical body |
+| J5.5 per-session physics and remote simulation | complete | `7e6033d0adcd0b572c20e89dd275746fb442d52f`; one Runtime engine/cache/scratch/shadow/body/host/remote/workset owner; 314 Runtime tests, 3,718 App tests / 3 skips, 8,588 complete Release tests / 5 skips, exact-binary lifecycle/reconnect and nine-stop collision/movement gates pass |
-| J5.6 projectile runtime | pending | canonical component/simulation plus App projection acknowledgements |
+| J5.6 projectile runtime | active | canonical component/simulation plus App projection acknowledgements |
 | J5.7 combined cleanup and closeout | pending | no mirrors, no-window parity, teardown, connected and visual gates |
 
 ## J5.1 — canonical action state
@@ -349,6 +349,25 @@ Gate:
 - hidden/pending/rehydration, teleport correction, delete/GUID reuse;
 - two concurrent Runtime instances prove scratch/shadow isolation.
 
+**Completed 2026-07-26 at
+`7e6033d0adcd0b572c20e89dd275746fb442d52f`.**
+`RuntimeEntityObjectLifetime` now constructs one `RuntimePhysicsState`, which
+owns the sole production `PhysicsEngine`, data cache/cell graph, transition
+scratch, shadow registry, collision admissions, canonical bodies and hosts,
+remote components, ordinary/remote worksets, simulation, and full-cell
+commits. App publishes prepared collision through generation-scoped receipts,
+supplies DAT/animation inputs, and projects immutable committed snapshots; it
+does not construct or run a parallel solver. Runtime tests pass 314/314, App
+tests pass 3,718/3 skips, and the complete Release suite passes 8,588/5 skips.
+The exact-binary lifecycle/reconnect report
+`logs/connected-world-gate-20260726-134107/report.json` passes both sessions,
+7/7 readiness checkpoints, graceful code-zero exits, and zero failures. The
+canonical route
+`logs/connected-r6-soak-20260726-134638.report.json` matches source/binary,
+passes all nine render/collision-ready destinations and movement exercises,
+and exits gracefully with code zero and zero failures. Evidence:
+[`../research/2026-07-26-slice-j5-5-physics-remote-ownership.md`](../research/2026-07-26-slice-j5-5-physics-remote-ownership.md).
+
 ## J5.6 — projectile runtime
 
 Move projectile component identity, prediction versions, and simulation into
@@ -456,6 +475,12 @@ J5.4 rollback:
 git revert aa3f4a60f87f2cbebc3d8ecd5e33d779b7fb13c1
 ```
 
+J5.5 rollback:
+
+```text
+git revert 7e6033d0adcd0b572c20e89dd275746fb442d52f
+```
+
 ## Acceptance
 
 J5 is complete only when:

docs/research/2026-07-26-slice-j5-5-physics-remote-ownership.md

@@ -196,5 +196,20 @@ Automated gate on the J5.5 production tree:
   production cache, does not contain the remote/ordinary transition solver,
   and cannot directly admit/remove streamed landblock collision.
 
-Connected lifecycle/reconnect and the canonical movement/collision route are
+Connected gates pass on exact production commit
-the exact-binary post-commit gate.
+`7e6033d0adcd0b572c20e89dd275746fb442d52f`:
+
+- `logs/connected-world-gate-20260726-134107/report.json` completed capped
+  login and uncapped fresh-process reconnect, all 7 readiness checkpoints,
+  graceful code-zero exits, and zero failures;
+- `logs/connected-r6-soak-20260726-134638.report.json` matched source and
+  binary SHA, materialized all 9 destinations with render and collision ready,
+  passed forward/jump/combat/authoritative movement exercises at Caul,
+  Holtburg, and Caul return, and exited gracefully with code zero and zero
+  failures.
+
+Exact production rollback:
+
+```text
+git revert 7e6033d0adcd0b572c20e89dd275746fb442d52f
+```