refactor(runtime): close simulation ownership

Move remote-motion construction, CreateObject vector initialization, final simulation-component retirement, and the combined J5 ownership ledger into Runtime. Delete App compatibility views and moved-state reconstruction while preserving the existing graphical projection and retail update order.

src/AcDream.App/Combat/LiveCombatAttackOperations.cs

@@ -122,7 +122,7 @@ internal sealed class LiveCombatAttackOperations
     private readonly CombatState _combat;
     private readonly ICombatAttackTargetSource _targets;
     private readonly ICombatGameplaySettingsSource _settings;
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly LocalPlayerOutboundController _outbound;
     private readonly ILiveInWorldSource _inWorld;
     private readonly ILiveWorldSessionSource _session;
@@ -132,7 +132,7 @@ internal sealed class LiveCombatAttackOperations
         CombatState combat,
         ICombatAttackTargetSource targets,
         ICombatGameplaySettingsSource settings,
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         LocalPlayerOutboundController outbound,
         ILiveInWorldSource inWorld,
         ILiveWorldSessionSource session,

src/AcDream.App/Composition/FrameRootComposition.cs

@@ -33,7 +33,7 @@ internal sealed record FrameRootDependencies(
     LocalPlayerModeState PlayerMode,
     LocalPlayerIdentityState PlayerIdentity,
     ChaseCameraInputState ChaseCameraInput,
-    LocalPlayerControllerSlot PlayerController,
+    RuntimeLocalPlayerMovementState PlayerController,
     LiveWorldOriginState WorldOrigin,
     ParticleVisibilityController ParticleVisibility,
     EntityEffectPoseRegistry EffectPoses,

src/AcDream.App/Composition/InteractionRetainedUiComposition.cs

@@ -56,7 +56,7 @@ internal sealed record InteractionRetainedUiDependencies(
     BufferedUiRegistry? UiRegistry,
     LiveCombatModeCommandSlot CombatModeCommands,
     ILocalPlayerIdentitySource PlayerIdentity,
-    ILocalPlayerControllerSource PlayerController,
+    IRuntimeLocalPlayerControllerSource PlayerController,
     ILocalPlayerModeSource PlayerMode,
     Func<DeferredSelectionViewPlaneSource, SelectionCameraSource>
         SelectionCameraFactory,

src/AcDream.App/Composition/LivePresentationComposition.cs

@@ -60,7 +60,7 @@ internal sealed record LivePresentationDependencies(
     CellVisibility CellVisibility,
     LiveWorldOriginState WorldOrigin,
     LocalPlayerIdentityState PlayerIdentity,
-    LocalPlayerControllerSlot PlayerController,
+    RuntimeLocalPlayerMovementState PlayerController,
     PointerPositionState PointerPosition,
     PlayerApproachCompletionState PlayerApproachCompletions,
     GameRenderResourceLifetime RenderResourceLifetime,

src/AcDream.App/Composition/SessionPlayerComposition.cs

@@ -60,7 +60,7 @@ internal sealed record SessionPlayerDependencies(
     RetailInboundEventDispatcher InboundEntityEvents,
     DeferredLiveEntityMotionRuntimeBindings MotionBindings,
     LocalPlayerIdentityState PlayerIdentity,
-    LocalPlayerControllerSlot PlayerController,
+    RuntimeLocalPlayerMovementState PlayerController,
     LocalPlayerPhysicsHostSlot PlayerHost,
     LocalPlayerModeState PlayerMode,
     ChaseCameraInputState ChaseCameraInput,
@@ -507,7 +507,6 @@ internal sealed class SessionPlayerCompositionPhase
             live.ProjectileController,
             live.RemoteTeleport,
             d.AnimatedEntities,
-            new LiveEntityRemoteMotionRuntimeView<RemoteMotion>(d.RuntimeSlot),
             d.RemoteMovementObservations,
             d.RemotePhysicsUpdater,
             d.RemoteInboundMotion,
@@ -874,7 +873,6 @@ internal sealed class SessionPlayerCompositionPhase
             sessionHost,
             liveSessionCommands,
             d.PlayerIdentity,
-            live.LiveEntities,
             d.EntityObjects,
             d.Inventory,
             d.Character,

src/AcDream.App/Diagnostics/RuntimeDiagnosticCommandController.cs

@@ -162,7 +162,7 @@ internal interface INearbyWorldDiagnosticSource
 internal sealed class RuntimeNearbyWorldDiagnosticSource : INearbyWorldDiagnosticSource
 {
     private readonly ILocalPlayerModeSource _mode;
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly CameraController _camera;
     private readonly LiveWorldOriginState _origin;
     private readonly GpuWorldState _world;
@@ -170,7 +170,7 @@ internal sealed class RuntimeNearbyWorldDiagnosticSource : INearbyWorldDiagnosti
 
     public RuntimeNearbyWorldDiagnosticSource(
         ILocalPlayerModeSource mode,
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         CameraController camera,
         LiveWorldOriginState origin,
         GpuWorldState world,

src/AcDream.App/GlobalUsings.cs

@@ -1,18 +1,4 @@
 global using AcDream.Runtime.Gameplay;
 global using AcDream.Runtime.Physics;
-global using ILiveEntityRemoteMotionRuntime =
-    AcDream.Runtime.Physics.IRuntimeRemoteMotion;
-global using ILiveEntityPhysicsHostConsumer =
-    AcDream.Runtime.Physics.IRuntimePhysicsHostConsumer;
-global using ILiveEntityCanonicalRuntimeConsumer =
-    AcDream.Runtime.Physics.IRuntimeCanonicalPhysicsConsumer;
-global using ILiveEntityCanonicalCellConsumer =
-    AcDream.Runtime.Physics.IRuntimeCanonicalCellConsumer;
-global using ILiveEntityRemotePlacementRuntime =
-    AcDream.Runtime.Physics.IRuntimeRemotePlacement;
-global using LocalPlayerControllerSlot =
-    AcDream.Runtime.Gameplay.RuntimeLocalPlayerMovementState;
-global using ILocalPlayerControllerSource =
-    AcDream.Runtime.Gameplay.IRuntimeLocalPlayerControllerSource;
 global using ILocalPlayerMotionSource =
     AcDream.Runtime.Gameplay.IRuntimeLocalPlayerMotionSource;

src/AcDream.App/Input/LocalPlayerFrameRuntime.cs

@@ -35,7 +35,7 @@ internal sealed class LiveLocalPlayerFrameRuntime : ILocalPlayerFrameRuntime
 {
     private readonly CameraController _camera;
     private readonly ILocalPlayerModeSource _mode;
-    private readonly ILocalPlayerControllerSource _controller;
+    private readonly IRuntimeLocalPlayerControllerSource _controller;
     private readonly IChaseCameraSource _chase;
     private readonly DispatcherMovementInputSource _input;
     private readonly IInputCaptureSource _capture;
@@ -49,7 +49,7 @@ internal sealed class LiveLocalPlayerFrameRuntime : ILocalPlayerFrameRuntime
     public LiveLocalPlayerFrameRuntime(
         CameraController camera,
         ILocalPlayerModeSource mode,
-        ILocalPlayerControllerSource controller,
+        IRuntimeLocalPlayerControllerSource controller,
         IChaseCameraSource chase,
         DispatcherMovementInputSource input,
         IInputCaptureSource capture,

src/AcDream.App/Input/MouseLookController.cs

@@ -96,7 +96,7 @@ internal sealed class MouseLookController : IMouseLookInputFrameController
     private readonly IMouseSource _mouseSource;
     private readonly IPointerPositionSource _pointer;
     private readonly ILocalPlayerModeSource _playerMode;
-    private readonly ILocalPlayerControllerSource _playerController;
+    private readonly IRuntimeLocalPlayerControllerSource _playerController;
     private readonly CameraController _camera;
     private readonly ChaseCameraInputState _chase;
     private readonly IMovementInputSource _movementInput;
@@ -111,7 +111,7 @@ internal sealed class MouseLookController : IMouseLookInputFrameController
         IMouseSource mouseSource,
         IPointerPositionSource pointer,
         ILocalPlayerModeSource playerMode,
-        ILocalPlayerControllerSource playerController,
+        IRuntimeLocalPlayerControllerSource playerController,
         CameraController camera,
         ChaseCameraInputState chase,
         IMovementInputSource movementInput,

src/AcDream.App/Input/MovementTruthDiagnosticController.cs

@@ -7,7 +7,7 @@ internal sealed class MovementTruthDiagnosticController
     : IMovementTruthDiagnosticSink
 {
     private readonly bool _enabled;
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly ILocalPlayerIdentitySource _identity;
     private MovementTruthOutbound? _lastOutbound;
 
@@ -24,7 +24,7 @@ internal sealed class MovementTruthDiagnosticController
 
     public MovementTruthDiagnosticController(
         bool enabled,
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         ILocalPlayerIdentitySource identity)
     {
         _enabled = enabled;

src/AcDream.App/Input/PlayerModeController.cs

@@ -23,7 +23,7 @@ internal sealed class PlayerModeController :
     IDevToolsPlayerModeTarget
 {
     private readonly LocalPlayerModeState _mode;
-    private readonly LocalPlayerControllerSlot _controllerSlot;
+    private readonly RuntimeLocalPlayerMovementState _controllerSlot;
     private readonly LocalPlayerPhysicsHostSlot _hostSlot;
     private readonly ChaseCameraInputState _chase;
     private readonly CameraController _camera;
@@ -49,7 +49,7 @@ internal sealed class PlayerModeController :
 
     public PlayerModeController(
         LocalPlayerModeState mode,
-        LocalPlayerControllerSlot controllerSlot,
+        RuntimeLocalPlayerMovementState controllerSlot,
         LocalPlayerPhysicsHostSlot hostSlot,
         ChaseCameraInputState chase,
         CameraController camera,

src/AcDream.App/Net/LiveSessionRuntimeFactory.cs

@@ -35,7 +35,7 @@ namespace AcDream.App.Net;
 
 internal sealed record LiveSessionPlayerRuntime(
     LocalPlayerIdentityState Identity,
-    LocalPlayerControllerSlot Controller,
+    RuntimeLocalPlayerMovementState Controller,
     LiveWorldOriginState WorldOrigin);
 
 internal sealed record LiveSessionDomainRuntime(

src/AcDream.App/Physics/LiveEntityNetworkUpdateController.cs

@@ -41,7 +41,6 @@ internal sealed class LiveEntityNetworkUpdateController
     private readonly ProjectileController _projectileController;
     private readonly RemoteTeleportController _remoteTeleportController;
     private readonly LiveEntityAnimationRuntimeView<LiveEntityAnimationState> _animatedEntities;
-    private readonly LiveEntityRemoteMotionRuntimeView<RemoteMotion> _remoteDeadReckon;
     private readonly RemoteMovementObservationTracker _remoteMovementObservations;
     private readonly RemotePhysicsUpdater _remotePhysicsUpdater;
     private readonly RemoteInboundMotionDispatcher _remoteInboundMotion;
@@ -53,7 +52,7 @@ internal sealed class LiveEntityNetworkUpdateController
     private readonly LiveWorldOriginState _origin;
     private readonly AcDream.App.Streaming.ILocalPlayerTeleportNetworkSink
         _localPlayerTeleport;
-    private readonly ILocalPlayerControllerSource _playerControllerSource;
+    private readonly IRuntimeLocalPlayerControllerSource _playerControllerSource;
     private readonly LocalPlayerOutboundController _localPlayerOutbound;
     private readonly ILocalPlayerPhysicsHostSource _playerHostSource;
     private readonly ILocalPlayerIdentitySource _playerIdentity;
@@ -83,7 +82,6 @@ internal sealed class LiveEntityNetworkUpdateController
         ProjectileController projectileController,
         RemoteTeleportController remoteTeleportController,
         LiveEntityAnimationRuntimeView<LiveEntityAnimationState> animatedEntities,
-        LiveEntityRemoteMotionRuntimeView<RemoteMotion> remoteDeadReckon,
         RemoteMovementObservationTracker remoteMovementObservations,
         RemotePhysicsUpdater remotePhysicsUpdater,
         RemoteInboundMotionDispatcher remoteInboundMotion,
@@ -94,7 +92,7 @@ internal sealed class LiveEntityNetworkUpdateController
         RuntimeCombatTargetState? combatTargetController,
         LiveWorldOriginState origin,
         AcDream.App.Streaming.ILocalPlayerTeleportNetworkSink localPlayerTeleport,
-        ILocalPlayerControllerSource playerControllerSource,
+        IRuntimeLocalPlayerControllerSource playerControllerSource,
         LocalPlayerOutboundController localPlayerOutbound,
         ILocalPlayerPhysicsHostSource playerHostSource,
         ILocalPlayerIdentitySource playerIdentity,
@@ -113,7 +111,6 @@ internal sealed class LiveEntityNetworkUpdateController
         _projectileController = projectileController ?? throw new ArgumentNullException(nameof(projectileController));
         _remoteTeleportController = remoteTeleportController ?? throw new ArgumentNullException(nameof(remoteTeleportController));
         _animatedEntities = animatedEntities ?? throw new ArgumentNullException(nameof(animatedEntities));
-        _remoteDeadReckon = remoteDeadReckon ?? throw new ArgumentNullException(nameof(remoteDeadReckon));
         _remoteMovementObservations = remoteMovementObservations ?? throw new ArgumentNullException(nameof(remoteMovementObservations));
         _remotePhysicsUpdater = remotePhysicsUpdater ?? throw new ArgumentNullException(nameof(remotePhysicsUpdater));
         _remoteInboundMotion = remoteInboundMotion ?? throw new ArgumentNullException(nameof(remoteInboundMotion));
@@ -151,7 +148,10 @@ internal sealed class LiveEntityNetworkUpdateController
         uint localEntityId,
         Func<bool> isCurrent)
     {
-        _remoteDeadReckon.TryGetValue(serverGuid, out RemoteMotion? remote);
+        _liveEntities.TryGetRemoteMotionRuntime(
+            serverGuid,
+            out IRuntimeRemoteMotion? remoteRuntime);
+        RemoteMotion? remote = remoteRuntime as RemoteMotion;
         EntityPhysicsHost? host =
             _liveEntities.TryGetPhysicsHost(serverGuid, out var registered)
                 ? registered as EntityPhysicsHost
@@ -570,7 +570,10 @@ internal sealed class LiveEntityNetworkUpdateController
                     _remoteMovementObservations[motionKey] =
                         (prev.Pos, refreshedTime);
                 }
-                if (_remoteDeadReckon.TryGetValue(update.Guid, out var dr))
+                if (_liveEntities.TryGetRemoteMotionRuntime(
+                        update.Guid,
+                        out IRuntimeRemoteMotion? remoteRuntime)
+                    && remoteRuntime is RemoteMotion dr)
                     dr.LastServerPosTime = (refreshedTime - System.DateTime.UnixEpoch).TotalSeconds;
             }
 
@@ -635,12 +638,15 @@ internal sealed class LiveEntityNetworkUpdateController
         if (!IsCurrentOwner())
             return default;
 
-        if (!_remoteDeadReckon.TryGetValue(update.Guid, out var remote))
+        if (!_liveEntities.TryGetRemoteMotionRuntime(
+                update.Guid,
+                out IRuntimeRemoteMotion? remoteRuntime)
+            || remoteRuntime is not RemoteMotion remote)
         {
-            remote = CreateRemoteMotion(update.Guid);
+            remote = _liveEntities.GetOrCreateRemoteMotionRuntime(
+                update.Guid);
             remote.Body.Orientation = entity.Rotation;
             remote.Body.Position = entity.Position;
-            _remoteDeadReckon[update.Guid] = remote;
         }
         if (!IsCurrentOwner(remote))
             return default;
@@ -719,43 +725,6 @@ internal sealed class LiveEntityNetworkUpdateController
             && runtime.IsCurrentSpatialRemoteMotion(record, remote);
     }
 
-    /// <summary>
-    /// Creates the optional MovementManager companion for one live object.
-    /// A retained projectile or static-animation owner contributes the
-    /// already-owned CPhysicsObj body; an ordinary remote gets local storage.
-    /// </summary>
-    private RemoteMotion CreateRemoteMotion(uint serverGuid)
-    {
-        LiveEntityRecord? record = null;
-        if (_liveEntities is { } liveEntities
-            && liveEntities.TryGetRecord(serverGuid, out var currentRecord))
-        {
-            record = currentRecord;
-        }
-
-        RemoteMotion remote;
-        if (record?.PhysicsBody is { } canonicalBody)
-        {
-            // Retail has one CPhysicsObj. A projectile or Physics-Static
-            // animation workset can create it before the MovementManager;
-            // adopt its current frame/vectors without replaying CreateObject.
-            remote = new RemoteMotion(canonicalBody);
-        }
-        else
-        {
-            remote = new RemoteMotion();
-            if (record is not null)
-                AcDream.App.Physics.RemotePhysicsBodyInitializer.Initialize(
-                    remote.Body,
-                    record);
-        }
-
-        RemoteMotion incarnation = remote;
-        remote.Movement.ActivatePhysicsObject = () =>
-            _liveEntities?.TryActivateOrdinaryObject(serverGuid, incarnation);
-        return remote;
-    }
-
     /// <summary>
     /// K-fix9 (2026-04-26): handle 0xF74E VectorUpdate from remote jumps.
     /// The payload seeds the world-space launch velocity and angular velocity.
@@ -822,7 +791,13 @@ internal sealed class LiveEntityNetworkUpdateController
         if (!_liveEntities.ContainsWorldEntity(update.Guid)) return;
 
         if (update.Guid == _playerServerGuid) return;          // local jump uses our own physics
-        if (!_remoteDeadReckon.TryGetValue(update.Guid, out var rm)) return;
+        if (!_liveEntities.TryGetRemoteMotionRuntime(
+                update.Guid,
+                out IRuntimeRemoteMotion? remoteRuntime)
+            || remoteRuntime is not RemoteMotion rm)
+        {
+            return;
+        }
         LiveEntityRecord remoteRecord = acceptedVectorRecord;
 
         // World-space velocity. Apply directly to the body — the per-tick
@@ -1249,10 +1224,14 @@ internal sealed class LiveEntityNetworkUpdateController
             // small. When HasVelocity is set, we also seed PhysicsBody
             // velocity (matches retail's set_velocity call in the same
             // dispatcher).
-            if (!_remoteDeadReckon.TryGetValue(update.Guid, out var rmState))
+            if (!_liveEntities.TryGetRemoteMotionRuntime(
+                    update.Guid,
+                    out IRuntimeRemoteMotion? remoteRuntime)
+                || remoteRuntime is not RemoteMotion rmState)
             {
-                rmState = CreateRemoteMotion(update.Guid);
-                _remoteDeadReckon[update.Guid] = rmState;
+                rmState =
+                    _liveEntities.GetOrCreateRemoteMotionRuntime(
+                        update.Guid);
                 // Hard-snap orientation on first spawn so the per-tick
                 // slerp doesn't visibly rotate from Identity to truth.
                 rmState.Body.Orientation = rot;

src/AcDream.App/Physics/LiveEntityShadowPublisher.cs

@@ -14,7 +14,7 @@ internal static class LiveEntityShadowPublisher
         LiveEntityRuntime runtime,
         LiveEntityRecord record,
         WorldEntity entity,
-        ILiveEntityRemoteMotionRuntime remote,
+        IRuntimeRemoteMotion remote,
         ulong positionAuthorityVersion,
         Action publish)
     {
@@ -47,7 +47,7 @@ internal static class LiveEntityShadowPublisher
         LiveEntityRuntime runtime,
         LiveEntityRecord record,
         WorldEntity entity,
-        ILiveEntityRemoteMotionRuntime remote,
+        IRuntimeRemoteMotion remote,
         ulong positionAuthorityVersion) =>
         (record.FinalPhysicsState & PhysicsStateFlags.Hidden) == 0
         && ReferenceEquals(record.WorldEntity, entity)

src/AcDream.App/Physics/ProjectileController.cs

@@ -246,7 +246,6 @@ internal sealed class ProjectileController
                 {
                     var created = new PhysicsBody
                     {
-                        State = record.FinalPhysicsState,
                         Friction = NormalizeFriction(
                             physics.Friction ?? record.Snapshot.Friction),
                         Elasticity = NormalizeElasticity(
@@ -254,8 +253,6 @@ internal sealed class ProjectileController
                         Orientation = entity.Rotation,
                         LastUpdateTime = currentTime,
                     };
-                    SetVelocity(created, velocity, currentTime);
-                    created.Omega = omega;
                     created.SnapToCell(
                         wirePosition.LandblockId,
                         entity.Position,
@@ -919,22 +916,6 @@ internal sealed class ProjectileController
     private static void Deactivate(PhysicsBody body) =>
         body.TransientState &= ~TransientStateFlags.Active;
 
-    private static void SetVelocity(
-        PhysicsBody body,
-        Vector3 velocity,
-        double currentTime)
-    {
-        bool wasActive = (body.TransientState & TransientStateFlags.Active) != 0;
-        body.set_velocity(velocity);
-        if ((body.State & PhysicsStateFlags.Static) != 0)
-        {
-            Deactivate(body);
-            return;
-        }
-        if (!wasActive && (body.State & PhysicsStateFlags.Static) == 0)
-            body.LastUpdateTime = currentTime;
-    }
-
     private static float NormalizeFriction(float? value) =>
         value is >= 0f and <= 1f && float.IsFinite(value.Value)
             ? value.Value

src/AcDream.App/Physics/RemotePhysicsBodyInitializer.cs

@@ -1,39 +0,0 @@
-using System.Numerics;
-using AcDream.App.World;
-using AcDream.Core.Physics;
-
-namespace AcDream.App.Physics;
-
-/// <summary>
-/// Applies CreateObject physics vectors when the ordinary remote-motion body
-/// is first constructed. This keeps initialization at object/body creation;
-/// a later SetState classification change never replays retained vectors.
-/// </summary>
-/// <remarks>
-/// Retail <c>CPhysicsObj::set_description</c> <c>0x00514F40</c> installs the
-/// unpacked velocity/omega during object initialization. Retail
-/// <c>SmartBox::DoSetState</c> <c>0x004520D0</c> only calls
-/// <c>CPhysicsObj::set_state</c> and therefore preserves the current vectors.
-/// </remarks>
-internal static class RemotePhysicsBodyInitializer
-{
-    internal static void Initialize(PhysicsBody body, LiveEntityRecord record)
-    {
-        ArgumentNullException.ThrowIfNull(body);
-        ArgumentNullException.ThrowIfNull(record);
-
-        body.State = record.FinalPhysicsState;
-        if (record.Snapshot.Physics is not { } physics)
-            return;
-
-        if (physics.Velocity is { } velocity && IsFinite(velocity))
-            body.set_velocity(velocity);
-        if (physics.AngularVelocity is { } omega && IsFinite(omega))
-            body.Omega = omega;
-    }
-
-    private static bool IsFinite(Vector3 value) =>
-        float.IsFinite(value.X)
-        && float.IsFinite(value.Y)
-        && float.IsFinite(value.Z);
-}

src/AcDream.App/Physics/RemoteTeleportController.cs

@@ -73,7 +73,7 @@ internal sealed class RemoteTeleportController : IDisposable
         LiveEntityRecord Record,
         ulong PositionAuthorityVersion,
         ulong VelocityAuthorityVersion,
-        ILiveEntityRemotePlacementRuntime Remote,
+        IRuntimeRemotePlacement Remote,
         PhysicsBody Body,
         WorldEntity Entity,
         Vector3 RequestedWorldPosition,
@@ -110,7 +110,7 @@ internal sealed class RemoteTeleportController : IDisposable
     /// revalidation once admitted.
     /// </summary>
     internal Result TryApply(
-        ILiveEntityRemotePlacementRuntime remote,
+        IRuntimeRemotePlacement remote,
         WorldEntity entity,
         Vector3 requestedWorldPosition,
         uint requestedCellId,
@@ -147,7 +147,7 @@ internal sealed class RemoteTeleportController : IDisposable
         LiveEntityRecord expectedRecord,
         ulong expectedPositionAuthorityVersion,
         ulong expectedVelocityAuthorityVersion,
-        ILiveEntityRemotePlacementRuntime remote,
+        IRuntimeRemotePlacement remote,
         WorldEntity entity,
         Vector3 requestedWorldPosition,
         uint requestedCellId,
@@ -422,7 +422,7 @@ internal sealed class RemoteTeleportController : IDisposable
                 _pending.Remove(key);
                 return;
             }
-            if (record.RemoteMotionRuntime is not ILiveEntityRemotePlacementRuntime currentRemote
+            if (record.RemoteMotionRuntime is not IRuntimeRemotePlacement currentRemote
                 || record.PhysicsBody is null
                 || !ReferenceEquals(record.PhysicsBody, pending.Body)
                 || !ReferenceEquals(currentRemote.Body, record.PhysicsBody))
@@ -467,7 +467,7 @@ internal sealed class RemoteTeleportController : IDisposable
     }
 
     private static RollbackPlacement CaptureRollback(
-        ILiveEntityRemotePlacementRuntime remote,
+        IRuntimeRemotePlacement remote,
         PhysicsBody body)
     {
         return new RollbackPlacement(

src/AcDream.App/Physics/RemoteTeleportPlacement.cs

@@ -13,7 +13,7 @@ namespace AcDream.App.Physics;
 internal static class RemoteTeleportPlacement
 {
     internal static bool Apply(
-        ILiveEntityRemotePlacementRuntime remote,
+        IRuntimeRemotePlacement remote,
         PhysicsBody body,
         ResolveResult placement,
         Vector3 cellLocalPosition,

src/AcDream.App/Rendering/DatLiveEntityProjectionMaterializer.cs

@@ -1005,7 +1005,6 @@ internal sealed class DatLiveEntityProjectionMaterializer
             incarnation =>
             {
                 var created = new PhysicsBody { Orientation = entity.Rotation };
-                RemotePhysicsBodyInitializer.Initialize(created, incarnation);
                 created.SnapToCell(
                     staticPosition.LandblockId,
                     entity.Position,

src/AcDream.App/Rendering/DevToolsRuntimeSources.cs

@@ -257,7 +257,7 @@ internal interface IDevToolsRuntimeFacts
 internal sealed class DevToolsRuntimeFacts : IDevToolsRuntimeFacts
 {
     private readonly ILocalPlayerModeSource _mode;
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly CameraController _camera;
     private readonly ICanonicalWorldEntityCountSource _world;
     private readonly LiveEntityAnimationRuntimeView<LiveEntityAnimationState> _animations;
@@ -273,7 +273,7 @@ internal sealed class DevToolsRuntimeFacts : IDevToolsRuntimeFacts
 
     public DevToolsRuntimeFacts(
         ILocalPlayerModeSource mode,
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         CameraController camera,
         ICanonicalWorldEntityCountSource world,
         LiveEntityAnimationRuntimeView<LiveEntityAnimationState> animations,

src/AcDream.App/Rendering/WorldRenderFrameBuilder.cs

@@ -218,7 +218,7 @@ internal sealed class RuntimeWorldFrameRootSource : IWorldFrameRootSource
     private readonly CellVisibility _cells;
     private readonly ILocalPlayerModeSource _mode;
     private readonly IChaseCameraSource _chase;
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly LiveWorldOriginState _origin;
 
     public RuntimeWorldFrameRootSource(
@@ -226,7 +226,7 @@ internal sealed class RuntimeWorldFrameRootSource : IWorldFrameRootSource
         CellVisibility cells,
         ILocalPlayerModeSource mode,
         IChaseCameraSource chase,
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         LiveWorldOriginState origin)
     {
         _physics = physics ?? throw new ArgumentNullException(nameof(physics));

src/AcDream.App/Rendering/WorldSceneDiagnosticsController.cs

@@ -60,7 +60,7 @@ internal sealed class WorldSceneDiagnosticsController : IWorldSceneDiagnostics
     private readonly DebugLineRenderer? _lines;
     private readonly PhysicsEngine _physics;
     private readonly ILocalPlayerModeSource _mode;
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly DebugVmRenderFactsPublisher _debugVm;
     private readonly bool _debugVmConsumerActive;
     private int _debugDrawLogCount;
@@ -72,7 +72,7 @@ internal sealed class WorldSceneDiagnosticsController : IWorldSceneDiagnostics
         DebugLineRenderer? lines,
         PhysicsEngine physics,
         ILocalPlayerModeSource mode,
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         DebugVmRenderFactsPublisher debugVm,
         bool debugVmConsumerActive)
     {

src/AcDream.App/Rendering/WorldSceneRuntimeSources.cs

@@ -55,12 +55,12 @@ internal interface IWorldScenePViewDiagnosticSource
 internal sealed class RuntimeWorldScenePViewDiagnosticSource :
     IWorldScenePViewDiagnosticSource
 {
-    private readonly ILocalPlayerControllerSource _player;
+    private readonly IRuntimeLocalPlayerControllerSource _player;
     private readonly PhysicsEngine _physics;
     private readonly CellVisibility _visibility;
 
     public RuntimeWorldScenePViewDiagnosticSource(
-        ILocalPlayerControllerSource player,
+        IRuntimeLocalPlayerControllerSource player,
         PhysicsEngine physics,
         CellVisibility visibility)
     {

src/AcDream.App/Runtime/CurrentGameRuntimeAdapter.cs

@@ -32,7 +32,6 @@ internal sealed class CurrentGameRuntimeAdapter
         LiveSessionHost sessionHost,
         ICommandBus commands,
         LocalPlayerIdentityState playerIdentity,
-        LiveEntityRuntime entities,
         RuntimeEntityObjectLifetime entityObjects,
         RuntimeInventoryState inventory,
         RuntimeCharacterState character,
@@ -46,7 +45,6 @@ internal sealed class CurrentGameRuntimeAdapter
         _view = new CurrentGameRuntimeViewAdapter(
             session,
             playerIdentity,
-            entities,
             entityObjects,
             inventory,
             character,

src/AcDream.App/Runtime/CurrentGameRuntimeViewAdapter.cs

@@ -1,7 +1,6 @@
 using AcDream.App.Input;
 using AcDream.App.Net;
 using AcDream.App.Streaming;
-using AcDream.App.World;
 using AcDream.Core.Chat;
 using AcDream.Core.Items;
 using AcDream.Runtime;
@@ -19,8 +18,6 @@ internal sealed class CurrentGameRuntimeViewAdapter : IGameRuntimeView
 {
     private readonly LiveSessionController _session;
     private readonly LocalPlayerIdentityState _playerIdentity;
-    private readonly LiveEntityRuntime _entities;
-    private readonly ClientObjectTable _objects;
     private readonly IGameRuntimeClock _clock;
     private readonly IRuntimeEntityView _entityView;
     private readonly IRuntimeInventoryView _inventoryView;
@@ -36,7 +33,6 @@ internal sealed class CurrentGameRuntimeViewAdapter : IGameRuntimeView
     public CurrentGameRuntimeViewAdapter(
         LiveSessionController session,
         LocalPlayerIdentityState playerIdentity,
-        LiveEntityRuntime entities,
         RuntimeEntityObjectLifetime entityObjects,
         RuntimeInventoryState inventory,
         RuntimeCharacterState character,
@@ -49,9 +45,7 @@ internal sealed class CurrentGameRuntimeViewAdapter : IGameRuntimeView
         _session = session ?? throw new ArgumentNullException(nameof(session));
         _playerIdentity = playerIdentity
             ?? throw new ArgumentNullException(nameof(playerIdentity));
-        _entities = entities ?? throw new ArgumentNullException(nameof(entities));
         ArgumentNullException.ThrowIfNull(entityObjects);
-        _objects = entityObjects.Objects;
         ArgumentNullException.ThrowIfNull(communication);
         _clock = clock ?? throw new ArgumentNullException(nameof(clock));
 
@@ -115,10 +109,10 @@ internal sealed class CurrentGameRuntimeViewAdapter : IGameRuntimeView
             Generation,
             Lifecycle.State,
             _clock.FrameNumber,
-            _entities.Count,
-            _entities.MaterializedCount,
-            _objects.ObjectCount,
-            _objects.ContainerCount,
+            _entityView.Count,
+            _entityView.MaterializedCount,
+            _inventoryView.ObjectCount,
+            _inventoryView.ContainerCount,
             _inventoryStateView.Snapshot,
             _characterView.Snapshot,
             _socialView.Snapshot,

src/AcDream.App/Streaming/LocalPlayerTeleportController.cs

@@ -179,7 +179,7 @@ internal sealed class LocalPlayerTeleportPlacement : ILocalPlayerTeleportPlaceme
     private readonly PhysicsEngine _physics;
     private readonly LiveEntityRuntime _liveEntities;
     private readonly ILocalPlayerIdentitySource _identity;
-    private readonly ILocalPlayerControllerSource _controller;
+    private readonly IRuntimeLocalPlayerControllerSource _controller;
     private readonly ILocalPlayerPhysicsHostSource _host;
     private readonly ChaseCameraInputState _cameras;
     private readonly LiveWorldOriginState _origin;
@@ -189,7 +189,7 @@ internal sealed class LocalPlayerTeleportPlacement : ILocalPlayerTeleportPlaceme
         PhysicsEngine physics,
         LiveEntityRuntime liveEntities,
         ILocalPlayerIdentitySource identity,
-        ILocalPlayerControllerSource controller,
+        IRuntimeLocalPlayerControllerSource controller,
         ILocalPlayerPhysicsHostSource host,
         ChaseCameraInputState cameras,
         LiveWorldOriginState origin,

src/AcDream.App/Streaming/StreamingFrameController.cs

@@ -106,7 +106,7 @@ internal sealed class StreamingFrameController : IStreamingFramePhase
 
     private readonly bool _liveModeEnabled;
     private readonly ILocalPlayerModeSource _playerMode;
-    private readonly ILocalPlayerControllerSource _playerController;
+    private readonly IRuntimeLocalPlayerControllerSource _playerController;
     private readonly ILiveInWorldSource _session;
     private readonly LiveWorldOriginState _origin;
     private readonly ILocalPlayerLandblockSource _playerLandblock;
@@ -119,7 +119,7 @@ internal sealed class StreamingFrameController : IStreamingFramePhase
     public StreamingFrameController(
         bool liveModeEnabled,
         ILocalPlayerModeSource playerMode,
-        ILocalPlayerControllerSource playerController,
+        IRuntimeLocalPlayerControllerSource playerController,
         ILiveInWorldSource session,
         LiveWorldOriginState origin,
         ILocalPlayerLandblockSource playerLandblock,

src/AcDream.App/World/LiveEntityRuntime.cs

@@ -223,33 +223,27 @@ public sealed class LiveEntityRecord
     public PhysicsBody? PhysicsBody
     {
         get => Canonical.PhysicsBody;
-        internal set => _directory.SetPhysicsBody(Canonical, value);
     }
     internal bool PhysicsBodyAcquisitionInProgress
     {
         get => Canonical.PhysicsBodyAcquisitionInProgress;
-        set => _directory.SetPhysicsBodyAcquisitionInProgress(Canonical, value);
     }
     public ILiveEntityAnimationRuntime? AnimationRuntime { get; internal set; }
-    public ILiveEntityRemoteMotionRuntime? RemoteMotionRuntime
+    public IRuntimeRemoteMotion? RemoteMotionRuntime
     {
         get => Canonical.RemoteMotion;
-        internal set => _directory.SetRemoteMotion(Canonical, value);
     }
     internal bool RemoteMotionBindingInProgress
     {
         get => Canonical.RemoteMotionBindingInProgress;
-        set => _directory.SetRemoteMotionBindingInProgress(Canonical, value);
     }
     public AcDream.Core.Physics.Motion.IPhysicsObjHost? PhysicsHost
     {
         get => Canonical.PhysicsHost;
-        internal set => _directory.SetPhysicsHost(Canonical, value);
     }
     internal bool RequiresRemotePlacementRuntime
     {
         get => Canonical.RequiresRemotePlacementRuntime;
-        set => _directory.SetRequiresRemotePlacementRuntime(Canonical, value);
     }
     public IRuntimeProjectile? ProjectileRuntime => Canonical.Projectile;
     public ILiveEntityEffectProfile? EffectProfile { get; internal set; }
@@ -1389,7 +1383,7 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
             ProjectionIsCurrent);
     }
 
-    public void SetRemoteMotionRuntime(uint serverGuid, ILiveEntityRemoteMotionRuntime runtime)
+    internal void SetRemoteMotionRuntime(uint serverGuid, IRuntimeRemoteMotion runtime)
     {
         ArgumentNullException.ThrowIfNull(runtime);
         if (!_projections.TryGetCurrent(serverGuid, out LiveEntityRecord? record))
@@ -1442,7 +1436,7 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
 
     public bool TryGetRemoteMotionRuntime(
         uint serverGuid,
-        out ILiveEntityRemoteMotionRuntime runtime)
+        out IRuntimeRemoteMotion runtime)
     {
         if (_projections.TryGetCurrent(
                 serverGuid,
@@ -1457,7 +1451,7 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
         return false;
     }
 
-    public bool ClearRemoteMotionRuntime(uint serverGuid)
+    internal bool ClearRemoteMotionRuntime(uint serverGuid)
     {
         if (!_projections.TryGetCurrent(serverGuid, out LiveEntityRecord? record)
             || record.RemoteMotionRuntime is null)
@@ -1468,6 +1462,26 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
         return true;
     }
 
+    internal RemoteMotion GetOrCreateRemoteMotionRuntime(uint serverGuid)
+    {
+        if (!_projections.TryGetCurrent(
+                serverGuid,
+                out LiveEntityRecord? record))
+        {
+            throw new InvalidOperationException(
+                $"Cannot acquire remote motion before live entity 0x{serverGuid:X8} exists.");
+        }
+
+        bool ProjectionIsCurrent() =>
+            _projections.TryGetCurrent(
+                serverGuid,
+                out LiveEntityRecord? current)
+            && ReferenceEquals(current, record);
+        return _physics.GetOrCreateRemoteMotion(
+            record.Canonical,
+            ProjectionIsCurrent);
+    }
+
     internal IRuntimeProjectile BindProjectileRuntime(
         uint serverGuid,
         PhysicsBody body,
@@ -1874,27 +1888,6 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
             destination.Add(key.LocalEntityId);
     }
 
-    /// <summary>
-    /// Host side of retail <c>CPhysicsObj::set_active(1)</c> for a movement
-    /// manager owned by this exact incarnation. Static is a required no-op.
-    /// </summary>
-    internal bool TryActivateOrdinaryObject(
-        uint serverGuid,
-        ILiveEntityRemoteMotionRuntime runtime)
-    {
-        ArgumentNullException.ThrowIfNull(runtime);
-        if (!_projections.TryGetCurrent(serverGuid, out LiveEntityRecord? record)
-            || !ReferenceEquals(record.RemoteMotionRuntime, runtime)
-            || (record.FinalPhysicsState & PhysicsStateFlags.Static) != 0)
-        {
-            return false;
-        }
-
-        record.ObjectClock.Activate();
-        runtime.Body.TransientState |= TransientStateFlags.Active;
-        return true;
-    }
-
     /// <summary>
     /// Commits retail <c>CPhysicsObj::set_velocity</c> (0x005113F0) to the
     /// canonical body for this exact incarnation. The body and the retained
@@ -1941,41 +1934,19 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
     {
         ArgumentNullException.ThrowIfNull(record);
         ArgumentNullException.ThrowIfNull(body);
-        if (!IsFinite(velocity)
-            || (angularVelocity is { } omega && !IsFinite(omega))
-            || !double.IsFinite(currentTime)
-            || !_projections.TryGetCurrent(
+        bool ProjectionIsCurrent() =>
+            _projections.TryGetCurrent(
                 record.ServerGuid,
                 out LiveEntityRecord? current)
-            || !ReferenceEquals(current, record)
-            || !ReferenceEquals(current.PhysicsBody, body))
-        {
-            return false;
-        }
-
-        bool wasBodyActive =
-            (body.TransientState & TransientStateFlags.Active) != 0;
-        body.set_velocity(velocity);
-        if ((current.FinalPhysicsState & PhysicsStateFlags.Static) != 0)
-        {
-            // PhysicsBody models set_velocity's leaf write and therefore sets
-            // Active unconditionally. Retail CPhysicsObj::set_active(1) is a
-            // no-op for Static, so restore the exact prior bit here.
-            if (!wasBodyActive)
-                body.TransientState &= ~TransientStateFlags.Active;
-        }
-        else
-        {
-            bool clockReactivated = current.ObjectClock.Activate();
-            // PhysicsBody.LastUpdateTime remains only the compatibility clock
-            // for older absolute-time helpers; the record clock is canonical.
-            if (clockReactivated || !wasBodyActive)
-                body.LastUpdateTime = currentTime;
-        }
-
-        if (angularVelocity is { } acceptedOmega)
-            body.Omega = acceptedOmega;
-        return true;
+            && ReferenceEquals(current, record)
+            && ReferenceEquals(current.PhysicsBody, body);
+        return _physics.TryCommitAuthoritativeVector(
+            record.Canonical,
+            body,
+            velocity,
+            angularVelocity,
+            currentTime,
+            ProjectionIsCurrent);
     }
 
     /// <summary>
@@ -2007,7 +1978,7 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
 
     internal bool IsCurrentSpatialRemoteMotion(
         LiveEntityRecord record,
-        ILiveEntityRemoteMotionRuntime runtime) =>
+        IRuntimeRemoteMotion runtime) =>
         IsCurrentRecord(record)
         && _physics.IsSpatialRemote(record.Canonical, runtime)
         && HasSpatialRuntimeProjection(record);
@@ -2546,11 +2517,6 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
             body.TransientState &= ~TransientStateFlags.Active;
     }
 
-    private static bool IsFinite(Vector3 value) =>
-        float.IsFinite(value.X)
-        && float.IsFinite(value.Y)
-        && float.IsFinite(value.Z);
-
     private void PublishProjectionVisibilityChanged(LiveEntityRecord record, bool visible)
     {
         Delegate[] subscribers = ProjectionVisibilityChanged?.GetInvocationList()
@@ -2728,16 +2694,11 @@ public sealed class LiveEntityRuntime : ILiveEntityRadarSource
             }
 
             if (record.WorldEntity is not null)
-            {
                 _ = RequireProjectionKey(record);
-                _directory.ReleaseLocalId(record.Canonical);
-            }
+            _entityObjects.CompleteProjectionRetirement(
+                record.Canonical);
 
             record.AnimationRuntime = null;
-            record.RemoteMotionRuntime = null;
-            record.PhysicsHost = null;
-            record.RequiresRemotePlacementRuntime = false;
-            record.PhysicsBody = null;
             record.EffectProfile = null;
             record.IsSpatiallyProjected = false;
             record.IsSpatiallyVisible = false;

src/AcDream.App/World/LiveEntityRuntimeViews.cs

@@ -133,36 +133,3 @@ public sealed class LiveEntityAnimationRuntimeView<TAnimation>
             throw new NotSupportedException();
     }
 }
-
-/// <summary>Storage-free typed view over remote-motion components.</summary>
-public sealed class LiveEntityRemoteMotionRuntimeView<TRemoteMotion>
-    where TRemoteMotion : class, ILiveEntityRemoteMotionRuntime
-{
-    private readonly ILiveEntityRuntimeSource _runtime;
-
-    internal LiveEntityRemoteMotionRuntimeView(ILiveEntityRuntimeSource runtime) =>
-        _runtime = runtime ?? throw new ArgumentNullException(nameof(runtime));
-
-    public TRemoteMotion this[uint serverGuid]
-    {
-        set => (_runtime.Current
-            ?? throw new InvalidOperationException("Live entity runtime is not initialized."))
-            .SetRemoteMotionRuntime(serverGuid, value);
-    }
-
-    public bool TryGetValue(uint serverGuid, out TRemoteMotion motion)
-    {
-        if (_runtime.Current?.TryGetRemoteMotionRuntime(serverGuid, out var found) == true
-            && found is TRemoteMotion typed)
-        {
-            motion = typed;
-            return true;
-        }
-
-        motion = null!;
-        return false;
-    }
-
-    public bool Remove(uint serverGuid) =>
-        _runtime.Current?.ClearRemoteMotionRuntime(serverGuid) == true;
-}

src/AcDream.Core/Physics/PhysicsEngine.cs

@@ -168,6 +168,27 @@ public sealed class PhysicsEngine
         DataCache?.CellGraph.RemoveLandblock(landblockId);
     }
 
+    /// <summary>
+    /// Releases every collision landblock and retained shadow registration
+    /// owned by this engine. Runtime calls this only at terminal disposal;
+    /// ordinary streaming still uses the typed per-landblock retirement path.
+    /// </summary>
+    public void Clear()
+    {
+        if (_landblocks.Count != 0)
+        {
+            var landblocks = new uint[_landblocks.Count];
+            _landblocks.Keys.CopyTo(landblocks, 0);
+            foreach (uint landblockId in landblocks)
+                RemoveLandblock(landblockId);
+        }
+
+        // Dynamic live registrations can remain intentionally suspended with
+        // no cell rows after their last landblock retires. Terminal engine
+        // ownership must retire those logical registrations as well.
+        ShadowObjects.Clear();
+    }
+
     /// <summary>
     /// Retire a Near landblock's indoor-cell and static-object collision layer
     /// while preserving its terrain surface and world offset for Far-tier use.

src/AcDream.Core/Physics/ShadowObjectRegistry.cs

@@ -795,6 +795,21 @@ public sealed class ShadowObjectRegistry
     /// <summary>Suspended logical registrations awaiting spatial re-entry.</summary>
     public int SuspendedRegistrationCount => _suspendedEntities.Count;
 
+    /// <summary>
+    /// Retires the complete logical registry at terminal physics-engine
+    /// disposal, including suspended live registrations that own no cell row.
+    /// </summary>
+    public void Clear()
+    {
+        _cells.Clear();
+        _entityToCells.Clear();
+        _suspendedEntities.Clear();
+        _withdrawnPrefixesByOwner.Clear();
+        _entityShapes.Clear();
+        _entityReg.Clear();
+        _fallback = null;
+    }
+
     /// <summary>
     /// Debug: enumerate every registered ShadowEntry (deduplicated across cells).
     /// Single-shape entities return one entry per shape; multi-part entities

src/AcDream.Runtime/Entities/RuntimeEntityObjectLifetime.cs

@@ -32,7 +32,29 @@ public readonly record struct RuntimeEntityObjectOwnershipSnapshot(
     bool HasLastStreamDispatchFailure,
     int PendingDispatchCount,
     bool IsDispatching,
-    bool IsSessionClearInProgress);
+    bool IsSessionClearInProgress,
+    bool IsDisposed)
+{
+    public bool IsConverged =>
+        IsDisposed
+        && ActiveEntityCount == 0
+        && TeardownEntityCount == 0
+        && ClaimedLocalIdCount == 0
+        && AcceptedSnapshotCount == 0
+        && UnresolvedParentRelationCount == 0
+        && StagedParentRelationCount == 0
+        && RecoveryParentRelationCount == 0
+        && CommittedParentRelationCount == 0
+        && ObjectCount == 0
+        && ContainerCount == 0
+        && ContainerProjectionCount == 0
+        && EquipmentOwnerCount == 0
+        && PendingMoveCount == 0
+        && StreamSubscriberCount == 0
+        && PendingDispatchCount == 0
+        && !IsDispatching
+        && !IsSessionClearInProgress;
+}
 
 /// <summary>
 /// One exact DeleteObject acceptance issued by a
@@ -140,7 +162,8 @@ public sealed class RuntimeEntityObjectLifetime : IDisposable
             Events.LastDispatchFailure is not null,
             Events.PendingDispatchCount,
             Events.IsDispatching,
-            _sessionClearInProgress);
+            _sessionClearInProgress,
+            _disposed);
     }
 
     public void BindEventContext(
@@ -355,17 +378,7 @@ public sealed class RuntimeEntityObjectLifetime : IDisposable
             Entities.RetainTeardown(canonical);
             try
             {
-                Physics.RemoveSpatialProjection(canonical);
-                Entities.SetRemoteMotion(canonical, null);
-                Entities.SetRemoteMotionBindingInProgress(canonical, false);
-                Entities.SetProjectile(canonical, null);
-                Entities.SetProjectileBindingInProgress(canonical, false);
-                Entities.SetRequiresRemotePlacementRuntime(canonical, false);
-                Entities.SetPhysicsHost(canonical, null);
-                Entities.SetPhysicsBody(canonical, null);
-                Entities.SetPhysicsBodyAcquisitionInProgress(canonical, false);
-                Entities.SetHasPartArray(canonical, false);
-                Entities.ReleaseLocalId(canonical);
+                CompleteProjectionRetirement(canonical);
             }
             finally
             {
@@ -379,6 +392,30 @@ public sealed class RuntimeEntityObjectLifetime : IDisposable
         }
     }
 
+    /// <summary>
+    /// Completes the presentation acknowledgement for one retained
+    /// incarnation. Runtime retires every presentation-independent component
+    /// and releases its local identity only after the graphical host has
+    /// finished using those exact components for ExitWorld teardown.
+    /// </summary>
+    internal void CompleteProjectionRetirement(
+        RuntimeEntityRecord canonical)
+    {
+        EnsureNotDisposed();
+        ArgumentNullException.ThrowIfNull(canonical);
+        Physics.RemoveSpatialProjection(canonical);
+        Entities.SetRemoteMotion(canonical, null);
+        Entities.SetRemoteMotionBindingInProgress(canonical, false);
+        Entities.SetProjectile(canonical, null);
+        Entities.SetProjectileBindingInProgress(canonical, false);
+        Entities.SetRequiresRemotePlacementRuntime(canonical, false);
+        Entities.SetPhysicsHost(canonical, null);
+        Entities.SetPhysicsBody(canonical, null);
+        Entities.SetPhysicsBodyAcquisitionInProgress(canonical, false);
+        Entities.SetHasPartArray(canonical, false);
+        Entities.ReleaseLocalId(canonical);
+    }
+
     /// <summary>
     /// Applies the retained-object half of an accepted CreateObject while the
     /// exact canonical incarnation and its integration version remain current.

src/AcDream.Runtime/Entities/RuntimeEntityObjectViews.cs

@@ -85,6 +85,7 @@ internal sealed class RuntimeEntityObjectViews
         : IRuntimeEntityView
     {
         public int Count => owner.Count;
+        public int MaterializedCount => owner.ClaimedLocalIdCount;
 
         public bool TryGet(
             uint serverGuid,

src/AcDream.Runtime/GameRuntimeViews.cs

@@ -22,6 +22,8 @@ public interface IRuntimeEntityView
 {
     int Count { get; }
 
+    int MaterializedCount { get; }
+
     bool TryGet(uint serverGuid, out RuntimeEntitySnapshot entity);
 
     /// <summary>

src/AcDream.Runtime/Physics/RuntimePhysicsState.cs

@@ -12,7 +12,19 @@ public readonly record struct RuntimePhysicsOwnershipSnapshot(
     int CollisionAdmissionCount,
     int CollisionGenerationCount,
     bool OwnsProductionDataCache,
-    bool IsDisposed);
+    bool IsDisposed)
+{
+    public bool IsConverged =>
+        IsDisposed
+        && LandblockCount == 0
+        && RetainedShadowRegistrationCount == 0
+        && SpatialRootCount == 0
+        && SpatialRemoteCount == 0
+        && SpatialProjectileCount == 0
+        && CollisionAdmissionCount == 0
+        && CollisionGenerationCount == 0
+        && OwnsProductionDataCache;
+}
 
 public readonly record struct RuntimePhysicsCellCommit(
     RuntimeEntityRecord Record,
@@ -437,6 +449,8 @@ public sealed class RuntimePhysicsState : IDisposable
                 record,
                 expectedPlacementContract
                     || runtime is IRuntimeRemotePlacement);
+            if (expectedBody is null)
+                InitializeNewPhysicsBody(record, candidateBody);
             Entities.SetRemoteMotion(record, runtime);
             Entities.SetPhysicsBody(record, candidateBody);
             candidateBody.State = record.FinalPhysicsState;
@@ -452,6 +466,52 @@ public sealed class RuntimePhysicsState : IDisposable
         }
     }
 
+    /// <summary>
+    /// Constructs the one built-in remote-motion component for an exact
+    /// canonical incarnation. A graphical host may attach animation and pose
+    /// sinks afterward, but cannot construct or replace simulation state.
+    /// </summary>
+    internal RemoteMotion GetOrCreateRemoteMotion(
+        RuntimeEntityRecord record,
+        Func<bool>? externalOwnerValid = null)
+    {
+        EnsureNotDisposed();
+        ArgumentNullException.ThrowIfNull(record);
+        EnsureCurrent(record);
+        if (record.RemoteMotion is { } retained)
+        {
+            return retained as RemoteMotion
+                ?? throw new InvalidOperationException(
+                    $"Runtime entity 0x{record.ServerGuid:X8}/{record.Incarnation} owns a non-production remote-motion component.");
+        }
+
+        var created = new RemoteMotion(record.PhysicsBody);
+        created.Movement.ActivatePhysicsObject = () =>
+            TryActivateOrdinaryObject(record, created);
+        SetRemoteMotion(record, created, externalOwnerValid);
+        return created;
+    }
+
+    internal bool TryActivateOrdinaryObject(
+        RuntimeEntityRecord record,
+        IRuntimeRemoteMotion runtime,
+        Func<bool>? externalOwnerValid = null)
+    {
+        ArgumentNullException.ThrowIfNull(record);
+        ArgumentNullException.ThrowIfNull(runtime);
+        if (!Entities.IsCurrent(record)
+            || !ReferenceEquals(record.RemoteMotion, runtime)
+            || (record.FinalPhysicsState & PhysicsStateFlags.Static) != 0
+            || !(externalOwnerValid?.Invoke() ?? true))
+        {
+            return false;
+        }
+
+        record.ObjectClock.Activate();
+        runtime.Body.TransientState |= TransientStateFlags.Active;
+        return true;
+    }
+
     /// <summary>
     /// Acquires the one retail <c>CPhysicsObj</c> body for an exact accepted
     /// object incarnation. Factories may cross a host boundary, so ownership
@@ -499,6 +559,7 @@ public sealed class RuntimePhysicsState : IDisposable
                     $"Runtime entity 0x{record.ServerGuid:X8}/{record.Incarnation} acquired two physics bodies within one incarnation.");
             }
 
+            InitializeNewPhysicsBody(record, candidate);
             Entities.SetPhysicsBody(record, candidate);
             candidate.State = record.FinalPhysicsState;
             SynchronizeBodyActiveState(record);
@@ -905,6 +966,7 @@ public sealed class RuntimePhysicsState : IDisposable
     {
         if (_disposed)
             return;
+        Engine.Clear();
         _spatialRemotes.Clear();
         _spatialProjectiles.Clear();
         _spatialRoots.Clear();
@@ -1039,4 +1101,22 @@ public sealed class RuntimePhysicsState : IDisposable
         else
             body.TransientState &= ~TransientStateFlags.Active;
     }
+
+    /// <summary>
+    /// Retail <c>CPhysicsObj::set_description</c> (0x00514F40) installs the
+    /// accepted CreateObject velocity and omega once, when the incarnation's
+    /// CPhysicsObj is first acquired. Later SetState never replays them.
+    /// </summary>
+    private static void InitializeNewPhysicsBody(
+        RuntimeEntityRecord record,
+        PhysicsBody body)
+    {
+        body.State = record.FinalPhysicsState;
+        if (record.Snapshot.Physics is not { } physics)
+            return;
+        if (physics.Velocity is { } velocity && IsFinite(velocity))
+            body.set_velocity(velocity);
+        if (physics.AngularVelocity is { } omega && IsFinite(omega))
+            body.Omega = omega;
+    }
 }

src/AcDream.Runtime/RuntimeSimulationOwnership.cs

@@ -0,0 +1,44 @@
+using AcDream.Runtime.Entities;
+using AcDream.Runtime.Gameplay;
+using AcDream.Runtime.Physics;
+
+namespace AcDream.Runtime;
+
+/// <summary>
+/// One allocation-free terminal ownership ledger for the complete J5
+/// presentation-independent simulation graph. It owns no mutable state.
+/// Graphical and no-window hosts inspect the same canonical owners.
+/// </summary>
+public readonly record struct RuntimeSimulationOwnershipSnapshot(
+    RuntimeEntityObjectOwnershipSnapshot EntityObjects,
+    RuntimePhysicsOwnershipSnapshot Physics,
+    RuntimeGameplayOwnershipSnapshot Gameplay)
+{
+    public bool IsConverged =>
+        EntityObjects.IsConverged
+        && Physics.IsConverged
+        && Gameplay.IsConverged;
+}
+
+public static class RuntimeSimulationOwnership
+{
+    public static RuntimeSimulationOwnershipSnapshot Capture(
+        RuntimeEntityObjectLifetime entityObjects,
+        RuntimeInventoryState inventory,
+        RuntimeCharacterState character,
+        RuntimeCommunicationState communication,
+        RuntimeActionState actions,
+        RuntimeLocalPlayerMovementState movement)
+    {
+        ArgumentNullException.ThrowIfNull(entityObjects);
+        return new RuntimeSimulationOwnershipSnapshot(
+            entityObjects.CaptureOwnership(),
+            entityObjects.Physics.CaptureOwnership(),
+            RuntimeGameplayOwnership.Capture(
+                inventory,
+                character,
+                communication,
+                actions,
+                movement));
+    }
+}

tests/AcDream.App.Tests/Combat/LiveCombatAttackOperationsTests.cs

@@ -96,7 +96,7 @@ public sealed class LiveCombatAttackOperationsTests
         var combat = new CombatState();
         var targets = new FakeTargets();
         var settings = new FakeSettings();
-        var player = new LocalPlayerControllerSlot();
+        var player = new RuntimeLocalPlayerMovementState();
         var live = new FakeLiveSource { IsInWorld = inWorld };
         var feedback = new FakeFeedback();
         var outbound = new LocalPlayerOutboundController(

tests/AcDream.App.Tests/GlobalUsings.cs

@@ -1,18 +1,4 @@
 global using AcDream.Runtime.Gameplay;
 global using AcDream.Runtime.Physics;
-global using ILiveEntityRemoteMotionRuntime =
-    AcDream.Runtime.Physics.IRuntimeRemoteMotion;
-global using ILiveEntityPhysicsHostConsumer =
-    AcDream.Runtime.Physics.IRuntimePhysicsHostConsumer;
-global using ILiveEntityCanonicalRuntimeConsumer =
-    AcDream.Runtime.Physics.IRuntimeCanonicalPhysicsConsumer;
-global using ILiveEntityCanonicalCellConsumer =
-    AcDream.Runtime.Physics.IRuntimeCanonicalCellConsumer;
-global using ILiveEntityRemotePlacementRuntime =
-    AcDream.Runtime.Physics.IRuntimeRemotePlacement;
-global using LocalPlayerControllerSlot =
-    AcDream.Runtime.Gameplay.RuntimeLocalPlayerMovementState;
-global using ILocalPlayerControllerSource =
-    AcDream.Runtime.Gameplay.IRuntimeLocalPlayerControllerSource;
 global using ILocalPlayerMotionSource =
     AcDream.Runtime.Gameplay.IRuntimeLocalPlayerMotionSource;

tests/AcDream.App.Tests/Input/MouseLookControllerTests.cs

@@ -201,7 +201,7 @@ public sealed class MouseLookControllerTests
     {
         PlayerMovementController player = CreatePlayer();
         var mode = new LocalPlayerModeState();
-        var slot = new LocalPlayerControllerSlot { Controller = player };
+        var slot = new RuntimeLocalPlayerMovementState { Controller = player };
         var camera = new CameraController(new OrbitCamera(), new FlyCamera());
         var chase = new ChaseCameraInputState();
         var mouse = new FakeMouse();

tests/AcDream.App.Tests/Input/RuntimeLocalPlayerMovementStateTests.cs

@@ -3,12 +3,12 @@ using AcDream.Core.Physics;
 
 namespace AcDream.App.Tests.Input;
 
-public sealed class LocalPlayerControllerSlotTests
+public sealed class RuntimeLocalPlayerMovementStateTests
 {
     [Fact]
     public void MotionPreparation_RoutesCompletionWithoutPublishingController()
     {
-        var slot = new LocalPlayerControllerSlot();
+        var slot = new RuntimeLocalPlayerMovementState();
         ILocalPlayerMotionSource source = slot;
         var controller = new PlayerMovementController(new PhysicsEngine());
         controller.Motion.AddToQueue(0, MotionCommand.Ready, 0);
@@ -29,7 +29,7 @@ public sealed class LocalPlayerControllerSlotTests
     [Fact]
     public void MotionPreparation_HandsOffToCommittedControllerOnDispose()
     {
-        var slot = new LocalPlayerControllerSlot();
+        var slot = new RuntimeLocalPlayerMovementState();
         ILocalPlayerMotionSource source = slot;
         var controller = new PlayerMovementController(new PhysicsEngine());
 
@@ -45,7 +45,7 @@ public sealed class LocalPlayerControllerSlotTests
     [Fact]
     public void MotionPreparation_DrainsPriorAnimationBeforePublishingCandidate()
     {
-        var slot = new LocalPlayerControllerSlot();
+        var slot = new RuntimeLocalPlayerMovementState();
         ILocalPlayerMotionSource source = slot;
         var prior = new PlayerMovementController(new PhysicsEngine());
         var candidate = new PlayerMovementController(new PhysicsEngine());
@@ -71,7 +71,7 @@ public sealed class LocalPlayerControllerSlotTests
     [Fact]
     public void MotionPreparation_RejectsConcurrentCandidate()
     {
-        var slot = new LocalPlayerControllerSlot();
+        var slot = new RuntimeLocalPlayerMovementState();
         var first = new PlayerMovementController(new PhysicsEngine());
         var second = new PlayerMovementController(new PhysicsEngine());
 

tests/AcDream.App.Tests/Physics/ProjectileControllerTests.cs

@@ -105,11 +105,10 @@ public sealed class ProjectileControllerTests
         LiveEntityRecord record = fixture.Spawn(instance: 1);
         WorldEntity entity = record.WorldEntity!;
         Assert.Null(record.AnimationRuntime);
-        var remote = new AcDream.Runtime.Physics.RemoteMotion();
-        RemotePhysicsBodyInitializer.Initialize(remote.Body, record);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
         remote.Body.Position = entity.Position;
         remote.Body.Orientation = entity.Rotation;
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
         Assert.True(fixture.Controller.TryBind(record, ProjectileSetup(), 1.0, 1, 1));
         Assert.Same(remote.Body, record.ProjectileRuntime!.Body);
 
@@ -686,7 +685,9 @@ public sealed class ProjectileControllerTests
         LiveEntityRecord record = fixture.Spawn(instance: 1);
         Assert.True(fixture.Controller.TryBind(record, ProjectileSetup(), 1.0));
         PhysicsBody body = record.PhysicsBody!;
-        fixture.Live.SetRemoteMotionRuntime(Guid, new AcDream.Runtime.Physics.RemoteMotion(body));
+        Assert.Same(
+            body,
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid).Body);
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
         Assert.True(fixture.Controller.ApplyAuthoritativeState(
             record, record.FinalPhysicsState, 2.0, 1, 1));
@@ -710,7 +711,9 @@ public sealed class ProjectileControllerTests
         Assert.True(fixture.Controller.TryBind(record, ProjectileSetup(), 1.0));
         PhysicsBody body = record.PhysicsBody!;
         Vector3 position = body.Position;
-        fixture.Live.SetRemoteMotionRuntime(Guid, new AcDream.Runtime.Physics.RemoteMotion(body));
+        Assert.Same(
+            body,
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid).Body);
 
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
         Assert.True(fixture.Controller.ApplyAuthoritativeState(
@@ -949,9 +952,8 @@ public sealed class ProjectileControllerTests
         var fixture = new Fixture();
         LiveEntityRecord record = fixture.Spawn(instance: 1);
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
-        var remote = new AcDream.Runtime.Physics.RemoteMotion();
-        RemotePhysicsBodyInitializer.Initialize(remote.Body, record);
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
 
         PhysicsStateFlags ordinaryState =
             PhysicsStateFlags.Gravity | PhysicsStateFlags.IgnoreCollisions;
@@ -1001,9 +1003,8 @@ public sealed class ProjectileControllerTests
         var fixture = new Fixture();
         LiveEntityRecord record = fixture.Spawn(instance: 1);
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
-        var remote = new AcDream.Runtime.Physics.RemoteMotion();
-        RemotePhysicsBodyInitializer.Initialize(remote.Body, record);
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
 
         record.FinalPhysicsState = MissileState;
         Assert.True(fixture.Controller.ApplyAuthoritativeState(
@@ -1073,15 +1074,14 @@ public sealed class ProjectileControllerTests
             seedCellId: startCell,
             isStatic: false);
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
-        var remote = new AcDream.Runtime.Physics.RemoteMotion();
-        RemotePhysicsBodyInitializer.Initialize(remote.Body, record);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
         Assert.Equal(new Vector3(40f, 0f, 0f), remote.Body.Velocity);
         Assert.Equal(new Vector3(0f, 0f, 2f), remote.Body.Omega);
         remote.Body.set_velocity(new Vector3(8f, 0f, 0f));
         remote.Body.Omega = new Vector3(0f, 0f, 3f);
         remote.Body.Position = entity.Position;
         remote.Body.State = record.FinalPhysicsState;
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
         PhysicsBody body = remote.Body;
 
         record.FinalPhysicsState = MissileState;
@@ -1139,11 +1139,10 @@ public sealed class ProjectileControllerTests
             velocity: new Vector3(float.NaN, 0f, 0f));
         WorldEntity entity = record.WorldEntity!;
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
-        var remote = new AcDream.Runtime.Physics.RemoteMotion();
-        RemotePhysicsBodyInitializer.Initialize(remote.Body, record);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
         remote.Body.Position = entity.Position;
         remote.Body.Orientation = entity.Rotation;
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
 
         Assert.True(float.IsNaN(record.Snapshot.Physics!.Value.Velocity!.Value.X));
         Assert.Equal(Vector3.Zero, remote.Body.Velocity);
@@ -1165,12 +1164,11 @@ public sealed class ProjectileControllerTests
         LiveEntityRecord record = fixture.Spawn(instance: 1);
         WorldEntity entity = record.WorldEntity!;
         record.FinalPhysicsState = PhysicsStateFlags.ReportCollisions;
-        var remote = new AcDream.Runtime.Physics.RemoteMotion();
-        RemotePhysicsBodyInitializer.Initialize(remote.Body, record);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
         remote.Body.Position = entity.Position;
         remote.Body.Orientation = entity.Rotation;
         remote.Body.Velocity = new Vector3(float.PositiveInfinity, 0f, 0f);
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
 
         record.FinalPhysicsState = MissileState;
         Assert.True(fixture.Controller.ApplyAuthoritativeState(
@@ -1189,8 +1187,9 @@ public sealed class ProjectileControllerTests
         LiveEntityRecord record = fixture.Spawn(instance: 1);
         Assert.True(fixture.Controller.TryBind(record, ProjectileSetup(), 1.0));
         PhysicsBody body = record.PhysicsBody!;
-        var remote = new AcDream.Runtime.Physics.RemoteMotion(body);
-        fixture.Live.SetRemoteMotionRuntime(Guid, remote);
+        var remote =
+            fixture.Live.GetOrCreateRemoteMotionRuntime(Guid);
+        Assert.Same(body, remote.Body);
 
         fixture.Live.RebucketLiveEntity(Guid, CellB);
         Assert.Equal(CellB, remote.CellId);

tests/AcDream.App.Tests/Physics/RemoteTeleportControllerTests.cs

@@ -19,12 +19,12 @@ public sealed class RemoteTeleportControllerTests
         public void Unregister(WorldEntity entity) { }
     }
 
-    private sealed class BodyOnlyRemote(PhysicsBody body) : ILiveEntityRemoteMotionRuntime
+    private sealed class BodyOnlyRemote(PhysicsBody body) : IRuntimeRemoteMotion
     {
         public PhysicsBody Body { get; } = body;
     }
 
-    private sealed class MutablePlacementRemote(PhysicsBody body) : ILiveEntityRemotePlacementRuntime
+    private sealed class MutablePlacementRemote(PhysicsBody body) : IRuntimeRemotePlacement
     {
         private uint _cellId;
         private Func<uint>? _readCell;
@@ -56,7 +56,7 @@ public sealed class RemoteTeleportControllerTests
 
     private sealed class AlternatingBodyRemote(
         PhysicsBody first,
-        PhysicsBody later) : ILiveEntityRemotePlacementRuntime
+        PhysicsBody later) : IRuntimeRemotePlacement
     {
         private int _reads;
         public PhysicsBody Body => _reads++ == 0 ? first : later;

tests/AcDream.App.Tests/Rendering/WorldRenderFrameBuilderTests.cs

@@ -190,7 +190,7 @@ public sealed class WorldRenderFrameBuilderTests
             cells,
             mode,
             chase,
-            new LocalPlayerControllerSlot(),
+            new RuntimeLocalPlayerMovementState(),
             origin);
         var camera = new FlyCamera { Position = new Vector3(5f, 6f, 7f) };
         WorldCameraFrame cameraFrame = CameraFrame(camera);
@@ -227,7 +227,7 @@ public sealed class WorldRenderFrameBuilderTests
             new CellVisibility(),
             new LocalPlayerModeState(),
             new ChaseCameraInputState(),
-            new LocalPlayerControllerSlot(),
+            new RuntimeLocalPlayerMovementState(),
             new LiveWorldOriginState());
         WorldCameraFrame camera = CameraFrame(new FlyCamera());
 

tests/AcDream.App.Tests/Runtime/CurrentGameRuntimeAdapterTests.cs

@@ -827,7 +827,6 @@ public sealed class CurrentGameRuntimeAdapterTests
                 Host,
                 Commands,
                 Identity,
-                Entities,
                 EntityObjects,
                 InventoryState,
                 Character,

tests/AcDream.App.Tests/Runtime/RuntimePhysicsOwnershipTests.cs

@@ -69,6 +69,13 @@ public sealed class RuntimePhysicsOwnershipTests
             runtimeRoot,
             "Physics",
             "RuntimePhysicsState.cs"));
+        string app = string.Join(
+            "\n",
+            Directory.EnumerateFiles(
+                    appRoot,
+                    "*.cs",
+                    SearchOption.AllDirectories)
+                .Select(File.ReadAllText));
 
         Assert.DoesNotContain(
             "ResolveWithTransition(",
@@ -131,6 +138,67 @@ public sealed class RuntimePhysicsOwnershipTests
             "public bool TryGetPhysicsHost(",
             runtimePhysics,
             StringComparison.Ordinal);
+        Assert.Contains(
+            "GetOrCreateRemoteMotion(",
+            runtimePhysics,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "_physics.TryCommitAuthoritativeVector(",
+            liveRuntime,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "TryActivateOrdinaryObject(",
+            liveRuntime,
+            StringComparison.Ordinal);
+        Assert.Contains(
+            "_entityObjects.CompleteProjectionRetirement(",
+            liveRuntime,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "record.RemoteMotionRuntime =",
+            liveRuntime,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "record.PhysicsBody =",
+            liveRuntime,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "new RemoteMotion(",
+            app,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "LiveEntityRemoteMotionRuntimeView",
+            app,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "ILiveEntityRemoteMotionRuntime",
+            app,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "ILiveEntityRemotePlacementRuntime",
+            app,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "LocalPlayerControllerSlot",
+            app,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "ILocalPlayerControllerSource",
+            app,
+            StringComparison.Ordinal);
+        Assert.False(File.Exists(Path.Combine(
+            appRoot,
+            "Physics",
+            "RemotePhysicsBodyInitializer.cs")));
+        Assert.False(typeof(AcDream.App.World.LiveEntityRecord)
+            .GetProperty(nameof(AcDream.App.World.LiveEntityRecord.PhysicsBody))!
+            .CanWrite);
+        Assert.False(typeof(AcDream.App.World.LiveEntityRecord)
+            .GetProperty(nameof(AcDream.App.World.LiveEntityRecord.RemoteMotionRuntime))!
+            .CanWrite);
+        Assert.False(typeof(AcDream.App.World.LiveEntityRecord)
+            .GetProperty(nameof(AcDream.App.World.LiveEntityRecord.PhysicsHost))!
+            .CanWrite);
     }
 
     private static string FindRepositoryRoot()

tests/AcDream.App.Tests/Streaming/LocalPlayerTeleportControllerTests.cs

@@ -411,7 +411,7 @@ public sealed class LocalPlayerTeleportControllerTests
                 MeshRefs = Array.Empty<MeshRef>(),
             })!;
         var identity = new LocalPlayerIdentityState { ServerGuid = guid };
-        var controllerSlot = new LocalPlayerControllerSlot
+        var controllerSlot = new RuntimeLocalPlayerMovementState
         {
             Controller = new PlayerMovementController(new PhysicsEngine()),
         };
@@ -494,7 +494,7 @@ public sealed class LocalPlayerTeleportControllerTests
                 MeshRefs = Array.Empty<MeshRef>(),
             })!;
         var identity = new LocalPlayerIdentityState { ServerGuid = guid };
-        var controllerSlot = new LocalPlayerControllerSlot
+        var controllerSlot = new RuntimeLocalPlayerMovementState
         {
             Controller = new PlayerMovementController(new PhysicsEngine()),
         };

tests/AcDream.App.Tests/Streaming/StreamingFrameControllerTests.cs

@@ -422,7 +422,7 @@ public sealed class StreamingFrameControllerTests
         }
 
         internal LocalPlayerModeState Mode { get; } = new();
-        internal LocalPlayerControllerSlot Player { get; } = new();
+        internal RuntimeLocalPlayerMovementState Player { get; } = new();
         internal SessionSource Session { get; } = new();
         internal LiveWorldOriginState Origin { get; } = new();
         internal PlayerLandblockSource PlayerLandblock { get; } = new();

tests/AcDream.App.Tests/World/GameWindowLiveEntityCompositionTests.cs

@@ -144,12 +144,7 @@ public sealed class GameWindowLiveEntityCompositionTests
             typeof(LiveEntityAnimationRuntimeView<LiveEntityAnimationState>)
                 .GetFields(BindingFlags.Instance | BindingFlags.NonPublic),
             field => field.Name == "_runtime");
-        FieldInfo remoteRuntime = Assert.Single(
-            typeof(LiveEntityRemoteMotionRuntimeView<RemoteMotion>)
-                .GetFields(BindingFlags.Instance | BindingFlags.NonPublic),
-            field => field.Name == "_runtime");
         Assert.Equal(typeof(ILiveEntityRuntimeSource), animationRuntime.FieldType);
-        Assert.Equal(typeof(ILiveEntityRuntimeSource), remoteRuntime.FieldType);
 
         FieldInfo[] projectileFields = typeof(ProjectileController).GetFields(
             BindingFlags.Instance | BindingFlags.NonPublic);
@@ -192,7 +187,7 @@ public sealed class GameWindowLiveEntityCompositionTests
             source,
             StringComparison.Ordinal);
         Assert.DoesNotContain(
-            "new LiveEntityRemoteMotionRuntimeView<RemoteMotion>(() =>",
+            "LiveEntityRemoteMotionRuntimeView",
             source,
             StringComparison.Ordinal);
         Assert.Contains("new DatProjectileSetupResolver", livePresentation);

tests/AcDream.App.Tests/World/LiveEntityHydrationControllerTests.cs

@@ -371,7 +371,11 @@ public sealed class LiveEntityHydrationControllerTests
         LiveEntityRecord record = fixture.Record;
         WorldEntity entity = record.WorldEntity!;
         var body = new PhysicsBody();
-        record.PhysicsBody = body;
+        Assert.Same(
+            body,
+            fixture.Runtime.GetOrCreatePhysicsBody(
+                record.ServerGuid,
+                _ => body));
         fixture.Relationships.OnUnparentAction = _ =>
             fixture.Runtime.WithdrawLiveEntityProjection(record)
                 ? ChildUnparentDisposition.Completed

tests/AcDream.App.Tests/World/LiveEntityLifecycleStressTests.cs

@@ -874,7 +874,7 @@ public sealed class LiveEntityLifecycleStressTests
                 _animations.TryGetValue(id, out Animation? animation) ? animation : null;
         }
 
-        private sealed class TestRemoteMotion : ILiveEntityRemotePlacementRuntime
+        private sealed class TestRemoteMotion : IRuntimeRemotePlacement
         {
             private uint _cellId;
             private Func<uint>? _readCell;

tests/AcDream.App.Tests/World/LiveEntityPhysicsHostOwnershipTests.cs

@@ -710,8 +710,8 @@ public sealed class LiveEntityPhysicsHostOwnershipTests
             interruptCurrentMovement);
 
     private sealed class HostConsumerMotion :
-        ILiveEntityRemoteMotionRuntime,
-        ILiveEntityPhysicsHostConsumer
+        IRuntimeRemoteMotion,
+        IRuntimePhysicsHostConsumer
     {
         private Func<IPhysicsObjHost?>? _read;
         public PhysicsBody Body { get; } = new();
@@ -725,8 +725,8 @@ public sealed class LiveEntityPhysicsHostOwnershipTests
     }
 
     private sealed class ThrowingCellConsumerMotion :
-        ILiveEntityRemoteMotionRuntime,
-        ILiveEntityCanonicalRuntimeConsumer
+        IRuntimeRemoteMotion,
+        IRuntimeCanonicalPhysicsConsumer
     {
         private bool _failOnce = true;
         public PhysicsBody Body { get; } = new();
@@ -748,14 +748,14 @@ public sealed class LiveEntityPhysicsHostOwnershipTests
 
     private sealed class AlternatingBodyMotion(
         PhysicsBody first,
-        PhysicsBody second) : ILiveEntityRemoteMotionRuntime
+        PhysicsBody second) : IRuntimeRemoteMotion
     {
         private int _reads;
         public PhysicsBody Body => _reads++ == 0 ? first : second;
     }
 
     private sealed class SequenceBodyMotion(params PhysicsBody[] bodies) :
-        ILiveEntityRemoteMotionRuntime
+        IRuntimeRemoteMotion
     {
         public int ReadCount { get; private set; }
 
@@ -771,8 +771,8 @@ public sealed class LiveEntityPhysicsHostOwnershipTests
     }
 
     private sealed class CallbackCanonicalMotion(Action callback) :
-        ILiveEntityRemoteMotionRuntime,
-        ILiveEntityCanonicalRuntimeConsumer
+        IRuntimeRemoteMotion,
+        IRuntimeCanonicalPhysicsConsumer
     {
         public PhysicsBody Body { get; } = new();
 

tests/AcDream.App.Tests/World/LiveEntityRuntimeTests.cs

@@ -48,7 +48,7 @@ public sealed class LiveEntityRuntimeTests
 
     private sealed class EffectProfile : ILiveEntityEffectProfile { }
 
-    private sealed class RemoteMotionRuntime : ILiveEntityRemoteMotionRuntime
+    private sealed class RemoteMotionRuntime : IRuntimeRemoteMotion
     {
         public PhysicsBody Body { get; } = new();
     }
@@ -1156,43 +1156,6 @@ public sealed class LiveEntityRuntimeTests
         Assert.False(remote.Body.TransientState.HasFlag(TransientStateFlags.Active));
     }
 
-    [Fact]
-    public void MovementActivation_ReactivatesExactIncarnation_ButStaticIsNoOp()
-    {
-        const uint ordinaryGuid = 0x70000050u;
-        const uint staticGuid = 0x70000051u;
-        var spatial = new GpuWorldState();
-        spatial.AddLandblock(EmptyLandblock(0x0101FFFFu));
-        var runtime = LiveEntityRuntimeFixture.Create(spatial, new RecordingResources());
-
-        LiveEntityRecord ordinary = RegisterProjection(
-            runtime,
-            Spawn(ordinaryGuid, 1, 1, 0x01010001u));
-        var ordinaryRemote = new RemoteMotionRuntime();
-        runtime.SetRemoteMotionRuntime(ordinaryGuid, ordinaryRemote);
-        ordinary.ObjectClock.Deactivate();
-        ordinaryRemote.Body.TransientState &= ~TransientStateFlags.Active;
-
-        Assert.True(runtime.TryActivateOrdinaryObject(ordinaryGuid, ordinaryRemote));
-        Assert.True(ordinary.ObjectClock.IsActive);
-        Assert.True(ordinaryRemote.Body.TransientState.HasFlag(TransientStateFlags.Active));
-
-        LiveEntityRecord staticRecord = RegisterProjection(
-            runtime,
-            Spawn(
-                staticGuid,
-                1,
-                1,
-                0x01010001u,
-                PhysicsStateFlags.Static));
-        var staticRemote = new RemoteMotionRuntime();
-        runtime.SetRemoteMotionRuntime(staticGuid, staticRemote);
-
-        Assert.False(runtime.TryActivateOrdinaryObject(staticGuid, staticRemote));
-        Assert.False(staticRecord.ObjectClock.IsActive);
-        Assert.False(staticRemote.Body.TransientState.HasFlag(TransientStateFlags.Active));
-    }
-
     [Fact]
     public void AuthoritativeVector_WakesOrdinaryClockButPreservesStaticActivity()
     {

tests/AcDream.App.Tests/World/RuntimeEntityOwnershipTests.cs

@@ -244,6 +244,10 @@ public sealed class RuntimeEntityOwnershipTests
         Assert.Contains(
             viewFields,
             field => field.FieldType == typeof(IRuntimeInventoryView));
+        Assert.DoesNotContain(
+            viewFields,
+            field => field.FieldType == typeof(LiveEntityRuntime)
+                || field.FieldType == typeof(ClientObjectTable));
         Assert.DoesNotContain(
             typeof(CurrentGameRuntimeViewAdapter).GetNestedTypes(
                 BindingFlags.NonPublic),
@@ -271,6 +275,21 @@ public sealed class RuntimeEntityOwnershipTests
         Assert.DoesNotContain("_entityObjects.PublishEntity", liveSource);
         Assert.DoesNotContain("_directory.TryApply", liveSource);
         Assert.DoesNotContain("_directory.RemoveActive", liveSource);
+
+        string viewSource = File.ReadAllText(Path.Combine(
+            root,
+            "src",
+            "AcDream.App",
+            "Runtime",
+            "CurrentGameRuntimeViewAdapter.cs"));
+        Assert.Contains(
+            "_entityView.MaterializedCount",
+            viewSource,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "_entities.MaterializedCount",
+            viewSource,
+            StringComparison.Ordinal);
     }
 
     private static bool IsPresentationType(Type type)

tests/AcDream.Runtime.Tests/Entities/RuntimeEntityObjectLifetimeTests.cs

@@ -1123,7 +1123,10 @@ public sealed class RuntimeEntityObjectLifetimeTests
         lifetime.Dispose();
 
         Assert.Equal(
-            default(RuntimeEntityObjectOwnershipSnapshot),
+            default(RuntimeEntityObjectOwnershipSnapshot) with
+            {
+                IsDisposed = true,
+            },
             lifetime.CaptureOwnership());
     }
 
@@ -1158,7 +1161,10 @@ public sealed class RuntimeEntityObjectLifetimeTests
         lifetime.Dispose();
 
         Assert.Equal(
-            default(RuntimeEntityObjectOwnershipSnapshot),
+            default(RuntimeEntityObjectOwnershipSnapshot) with
+            {
+                IsDisposed = true,
+            },
             lifetime.CaptureOwnership());
     }
 

tests/AcDream.Runtime.Tests/Gameplay/RuntimeGameplayOwnershipTests.cs

@@ -3,11 +3,60 @@ using AcDream.Core.Items;
 using AcDream.Core.Social;
 using AcDream.Runtime.Entities;
 using AcDream.Runtime.Gameplay;
+using AcDream.Runtime;
 
 namespace AcDream.Runtime.Tests.Gameplay;
 
 public sealed class RuntimeGameplayOwnershipTests
 {
+    [Fact]
+    public void J5LedgerConvergesEntityPhysicsAndGameplayAsOneLifetime()
+    {
+        var entities = new RuntimeEntityObjectLifetime();
+        var inventory = new RuntimeInventoryState(entities);
+        var character = new RuntimeCharacterState();
+        var communication = new RuntimeCommunicationState();
+        var actions = RuntimeActionTestFactory.Create(inventory.Transactions);
+        var movement = new RuntimeLocalPlayerMovementState();
+
+        movement.Execute(RuntimeMovementCommand.ToggleRunLock);
+        inventory.Transactions.IncrementBusyCount();
+        actions.Selection.Select(
+            0x70000001u,
+            AcDream.Core.Selection.SelectionChangeSource.System);
+        character.Spellbook.OnSpellLearned(42u);
+        communication.Chat.OnSystemMessage("runtime-only", 0u);
+
+        RuntimeSimulationOwnershipSnapshot populated =
+            RuntimeSimulationOwnership.Capture(
+                entities,
+                inventory,
+                character,
+                communication,
+                actions,
+                movement);
+        Assert.False(populated.IsConverged);
+
+        movement.Dispose();
+        actions.Dispose();
+        communication.Dispose();
+        character.Dispose();
+        inventory.Dispose();
+        entities.Dispose();
+
+        RuntimeSimulationOwnershipSnapshot retired =
+            RuntimeSimulationOwnership.Capture(
+                entities,
+                inventory,
+                character,
+                communication,
+                actions,
+                movement);
+        Assert.True(retired.IsConverged);
+        Assert.True(retired.EntityObjects.IsDisposed);
+        Assert.True(retired.Physics.IsDisposed);
+    }
+
     [Fact]
     public void CombinedLedgerConvergesEveryGameplayOwnerAndSubscription()
     {

tests/AcDream.Runtime.Tests/Physics/RuntimePhysicsStateTests.cs

@@ -340,6 +340,49 @@ public sealed class RuntimePhysicsStateTests
         Assert.Equal(0, first.Physics.Engine.LandblockCount);
     }
 
+    [Fact]
+    public void TerminalDisposalClearsLandblocksShadowsAndWorksets()
+    {
+        var lifetime = new RuntimeEntityObjectLifetime();
+        RuntimeEntityRecord record =
+            lifetime.Entities.AddActive(Spawn(0x70000041u, 1));
+        lifetime.Physics.AcknowledgeSpatialProjection(
+            record,
+            spatial: true);
+
+        RuntimeCollisionAdmission admission =
+            lifetime.Physics.BeginCollisionAdmission(0x0101FFFFu);
+        lifetime.Physics.AdmitCollisionAssets(
+            admission,
+            CollisionAssets(0x0101FFFFu));
+        _ = lifetime.Physics.CompleteCollisionAdmission(admission);
+        lifetime.Physics.Engine.ShadowObjects.Register(
+            entityId: record.LocalEntityId!.Value,
+            gfxObjId: 0x01000001u,
+            worldPos: new Vector3(10f, 20f, 5f),
+            rotation: Quaternion.Identity,
+            radius: 0.5f,
+            worldOffsetX: 0f,
+            worldOffsetY: 0f,
+            landblockId: 0x0101FFFFu,
+            seedCellId: 0x01010001u,
+            isStatic: false);
+
+        Assert.False(lifetime.Physics.CaptureOwnership().IsConverged);
+        Assert.True(
+            lifetime.Physics.Engine.ShadowObjects
+                .RetainedRegistrationCount > 0);
+
+        lifetime.Dispose();
+
+        RuntimePhysicsOwnershipSnapshot retired =
+            lifetime.Physics.CaptureOwnership();
+        Assert.True(retired.IsConverged);
+        Assert.Equal(0, retired.LandblockCount);
+        Assert.Equal(0, retired.RetainedShadowRegistrationCount);
+        Assert.Equal(0, retired.SpatialRootCount);
+    }
+
     [Fact]
     public void RemoteBindingOwnsCanonicalBodyCellAndTypedCellPublication()
     {
@@ -368,6 +411,66 @@ public sealed class RuntimePhysicsStateTests
         Assert.Equal(0, lifetime.Physics.SpatialRemoteCount);
     }
 
+    [Fact]
+    public void BuiltInRemoteConstructionInstallsCreateVectorsOnlyOnce()
+    {
+        using var lifetime = new RuntimeEntityObjectLifetime();
+        RuntimeEntityRecord record = lifetime.Entities.AddActive(
+            Spawn(
+                0x70000042u,
+                1,
+                velocity: new Vector3(40f, 0f, 0f),
+                angularVelocity: new Vector3(0f, 0f, 2f)));
+
+        RemoteMotion remote =
+            lifetime.Physics.GetOrCreateRemoteMotion(record);
+
+        Assert.Equal(new Vector3(40f, 0f, 0f), remote.Body.Velocity);
+        Assert.Equal(new Vector3(0f, 0f, 2f), remote.Body.Omega);
+        remote.Body.set_velocity(new Vector3(8f, 0f, 0f));
+        remote.Body.Omega = new Vector3(0f, 0f, 3f);
+
+        Assert.Same(
+            remote,
+            lifetime.Physics.GetOrCreateRemoteMotion(record));
+        Assert.Equal(new Vector3(8f, 0f, 0f), remote.Body.Velocity);
+        Assert.Equal(new Vector3(0f, 0f, 3f), remote.Body.Omega);
+    }
+
+    [Fact]
+    public void BuiltInMovementActivationUsesExactRuntimeIncarnation()
+    {
+        using var lifetime = new RuntimeEntityObjectLifetime();
+        RuntimeEntityRecord ordinary =
+            lifetime.Entities.AddActive(Spawn(0x70000043u, 1));
+        RemoteMotion ordinaryRemote =
+            lifetime.Physics.GetOrCreateRemoteMotion(ordinary);
+        ordinary.ObjectClock.Deactivate();
+        ordinaryRemote.Body.TransientState &=
+            ~TransientStateFlags.Active;
+
+        ordinaryRemote.Movement.ActivatePhysicsObject!();
+
+        Assert.True(ordinary.ObjectClock.IsActive);
+        Assert.True(ordinaryRemote.Body.IsActive);
+
+        RuntimeEntityRecord staticRecord =
+            lifetime.Entities.AddActive(Spawn(0x70000044u, 1));
+        lifetime.Entities.SetFinalPhysicsState(
+            staticRecord,
+            PhysicsStateFlags.Static);
+        RemoteMotion staticRemote =
+            lifetime.Physics.GetOrCreateRemoteMotion(staticRecord);
+        staticRecord.ObjectClock.Deactivate();
+        staticRemote.Body.TransientState &=
+            ~TransientStateFlags.Active;
+
+        staticRemote.Movement.ActivatePhysicsObject!();
+
+        Assert.False(staticRecord.ObjectClock.IsActive);
+        Assert.False(staticRemote.Body.IsActive);
+    }
+
     [Fact]
     public void RemotePhysicsTickUsesCanonicalRuntimeAndPublishesPoseSnapshot()
     {
@@ -523,7 +626,11 @@ public sealed class RuntimePhysicsStateTests
             0u);
     }
 
-    private static WorldSession.EntitySpawn Spawn(uint guid, ushort instance)
+    private static WorldSession.EntitySpawn Spawn(
+        uint guid,
+        ushort instance,
+        Vector3? velocity = null,
+        Vector3? angularVelocity = null)
     {
         var position = new CreateObject.ServerPosition(
             0x0101FFFFu,
@@ -559,9 +666,9 @@ public sealed class RuntimePhysicsStateTests
             Friction: null,
             Elasticity: null,
             Translucency: null,
-            Velocity: null,
+            Velocity: velocity,
             Acceleration: null,
-            AngularVelocity: null,
+            AngularVelocity: angularVelocity,
             DefaultScriptType: null,
             DefaultScriptIntensity: null,
             Timestamps: timestamps);

tests/AcDream.Runtime.Tests/RuntimeSimulationFixtureHostTests.cs

@@ -0,0 +1,384 @@
+using System.Numerics;
+using AcDream.Core.Combat;
+using AcDream.Core.Items;
+using AcDream.Core.Net;
+using AcDream.Core.Net.Messages;
+using AcDream.Core.Physics;
+using AcDream.Core.Spells;
+using AcDream.Runtime.Entities;
+using AcDream.Runtime.Gameplay;
+using AcDream.Runtime.Physics;
+
+namespace AcDream.Runtime.Tests;
+
+public sealed class RuntimeSimulationFixtureHostTests
+{
+    [Fact]
+    public void RuntimeOnlyHostDrivesCompleteJ5SimulationWithoutPresentation()
+    {
+        var host = new RuntimeOnlySimulationFixtureHost();
+
+        host.Move();
+        host.Use(0x70000011u);
+        host.Attack();
+        host.Cast();
+        host.AdvanceProjectile(failProjection: false);
+
+        Assert.Equal(
+            [
+                "movement:run",
+                "use:70000011",
+                "attack:prepare",
+                "attack:Medium:0.5",
+                "cast:stop",
+                "cast:1",
+                "cast:busy",
+                "projectile:ack",
+            ],
+            host.Trace);
+
+        string[] loaded = AppDomain.CurrentDomain.GetAssemblies()
+            .Select(static assembly =>
+                assembly.GetName().Name ?? string.Empty)
+            .ToArray();
+        Assert.DoesNotContain(loaded, static name =>
+            name.StartsWith(
+                "AcDream.App",
+                StringComparison.OrdinalIgnoreCase)
+            || name.StartsWith(
+                "AcDream.UI.",
+                StringComparison.OrdinalIgnoreCase)
+            || name.StartsWith(
+                "Silk.NET",
+                StringComparison.OrdinalIgnoreCase)
+            || name.StartsWith(
+                "OpenAL",
+                StringComparison.OrdinalIgnoreCase)
+            || name.StartsWith(
+                "ImGui",
+                StringComparison.OrdinalIgnoreCase));
+
+        host.Dispose();
+        Assert.True(host.CaptureOwnership().IsConverged);
+    }
+
+    [Fact]
+    public void ProjectionAcknowledgementFailureStillAllowsTerminalConvergence()
+    {
+        var host = new RuntimeOnlySimulationFixtureHost();
+
+        Assert.Throws<InvalidOperationException>(() =>
+            host.AdvanceProjectile(failProjection: true));
+
+        host.Dispose();
+
+        RuntimeSimulationOwnershipSnapshot ownership =
+            host.CaptureOwnership();
+        Assert.True(ownership.IsConverged);
+        Assert.Equal(0, ownership.Physics.SpatialProjectileCount);
+        Assert.Equal(0, ownership.EntityObjects.ActiveEntityCount);
+    }
+
+    private sealed class RuntimeOnlySimulationFixtureHost :
+        IRuntimeInteractionTransport,
+        IRuntimeCombatAttackOperations,
+        IRuntimeCombatTargetOperations,
+        IRuntimeCombatModeOperations,
+        IRuntimeSpellCastOperations,
+        IDisposable
+    {
+        private const uint ProjectileGuid = 0x70000021u;
+        private double _now = 10d;
+        private uint _sequence;
+        private bool _disposed;
+
+        public RuntimeOnlySimulationFixtureHost()
+        {
+            EntityObjects = new RuntimeEntityObjectLifetime();
+            Inventory = new RuntimeInventoryState(EntityObjects);
+            Character = new RuntimeCharacterState();
+            Character.Spellbook.InstallMetadata(SpellMetadata());
+            Character.Spellbook.OnSpellLearned(1u);
+            Communication = new RuntimeCommunicationState();
+            Actions = new RuntimeActionState(
+                Inventory.Transactions,
+                Character.Spellbook,
+                this,
+                this,
+                this,
+                this,
+                now: () => _now);
+            Movement = new RuntimeLocalPlayerMovementState();
+        }
+
+        public RuntimeEntityObjectLifetime EntityObjects { get; }
+        public RuntimeInventoryState Inventory { get; }
+        public RuntimeCharacterState Character { get; }
+        public RuntimeCommunicationState Communication { get; }
+        public RuntimeActionState Actions { get; }
+        public RuntimeLocalPlayerMovementState Movement { get; }
+        public List<string> Trace { get; } = [];
+
+        public void Move()
+        {
+            Assert.True(Movement.Execute(
+                RuntimeMovementCommand.ToggleRunLock));
+            Assert.True(Movement.AutoRunActive);
+            Trace.Add("movement:run");
+        }
+
+        public void Use(uint serverGuid)
+        {
+            ItemUseRequestReservation reservation =
+                Actions.Transactions.BeginUseRequestReservation();
+            RuntimeInteractionDispatchResult result =
+                Actions.Transactions.TryDispatchUse(
+                    serverGuid,
+                    ownedByPlayer: false,
+                    useable: true,
+                    reservation,
+                    this,
+                    out _);
+            Assert.Equal(
+                RuntimeInteractionDispatchResult.Dispatched,
+                result);
+            Actions.Transactions.CompleteUse(0u);
+        }
+
+        public void Attack()
+        {
+            Actions.Combat.SetCombatMode(CombatMode.Melee);
+            Actions.CombatAttack.SetDesiredPower(0.5f);
+            Actions.CombatAttack.PressAttack(AttackHeight.Medium);
+            _now += 0.5d;
+            Actions.CombatAttack.ReleaseAttack();
+        }
+
+        public void Cast() =>
+            Assert.Equal(
+                CastRequestResult.Sent,
+                Actions.SpellCast.Cast(1u));
+
+        public void AdvanceProjectile(bool failProjection)
+        {
+            RuntimeEntityRecord record =
+                EntityObjects.RegisterEntity(
+                    Spawn(ProjectileGuid, 1)).Canonical!;
+            PhysicsBody body =
+                EntityObjects.Physics.GetOrCreatePhysicsBody(
+                    record,
+                    static canonical =>
+                    {
+                        var created = new PhysicsBody
+                        {
+                            Position = new Vector3(10f, 20f, 5f),
+                            Orientation = Quaternion.Identity,
+                            InWorld = true,
+                            TransientState =
+                                TransientStateFlags.Active,
+                        };
+                        created.SnapToCell(
+                            canonical.FullCellId,
+                            created.Position,
+                            created.Position);
+                        return created;
+                    });
+            _ = EntityObjects.Physics.BindProjectile(
+                record,
+                body,
+                new ProjectileCollisionSphere(
+                    Vector3.Zero,
+                    0.25f));
+            EntityObjects.Physics.AcknowledgeSpatialProjection(
+                record,
+                spatial: true);
+
+            var updater =
+                new RuntimeProjectilePhysicsUpdater(
+                    EntityObjects.Physics);
+            Assert.True(updater.TryBegin(
+                record,
+                quantum: 0.05f,
+                record.ObjectClockEpoch,
+                externalOwnerValid: null,
+                out RuntimeProjectilePhysicsCommit commit));
+            _ = updater.Complete(
+                commit,
+                liveCenterX: 1,
+                liveCenterY: 1,
+                _ =>
+                {
+                    if (failProjection)
+                    {
+                        throw new InvalidOperationException(
+                            "projection acknowledgement");
+                    }
+                    Trace.Add("projectile:ack");
+                    return true;
+                });
+        }
+
+        public RuntimeSimulationOwnershipSnapshot CaptureOwnership() =>
+            RuntimeSimulationOwnership.Capture(
+                EntityObjects,
+                Inventory,
+                Character,
+                Communication,
+                Actions,
+                Movement);
+
+        public bool IsInWorld => true;
+        public uint LocalPlayerId => 0x50000001u;
+        public bool CanSend => true;
+        public bool IsDualWield => false;
+        public bool PlayerReadyForAttack => true;
+        public bool AutoRepeatAttack => false;
+        public bool AutoTarget => false;
+
+        public bool TrySendUse(uint serverGuid, out uint sequence)
+        {
+            sequence = ++_sequence;
+            Trace.Add($"use:{serverGuid:X8}");
+            return true;
+        }
+
+        public bool TrySendPickup(
+            uint itemGuid,
+            uint destinationContainerId,
+            int placement,
+            out uint sequence)
+        {
+            sequence = ++_sequence;
+            return true;
+        }
+
+        public bool CanStartAttack() => true;
+        public void PrepareAttackRequest() =>
+            Trace.Add("attack:prepare");
+
+        public bool SendAttack(AttackHeight height, float power)
+        {
+            Trace.Add($"attack:{height}:{power:0.0}");
+            return true;
+        }
+
+        public void SendCancelAttack() { }
+        public uint? SelectClosestTarget() => null;
+        public IReadOnlyList<ClientObject> GetOrderedEquipment() => [];
+        public void NotifyExplicitCombatModeRequest() { }
+        public void SendChangeCombatMode(CombatMode mode) { }
+        public bool HasRequiredComponents(uint spellId) => true;
+
+        public bool IsTargetCompatible(
+            uint targetId,
+            SpellMetadata spell,
+            bool showMessage) => true;
+
+        public void StopCompletely() =>
+            Trace.Add("cast:stop");
+
+        public void SendUntargeted(uint spellId) =>
+            Trace.Add($"cast:{spellId}");
+
+        public void SendTargeted(uint targetId, uint spellId) =>
+            Trace.Add($"cast:{targetId}:{spellId}");
+
+        public void DisplayMessage(string message) =>
+            Trace.Add($"message:{message}");
+
+        public void IncrementBusy()
+        {
+            Inventory.Transactions.IncrementBusyCount();
+            Trace.Add("cast:busy");
+        }
+
+        public void Dispose()
+        {
+            if (_disposed)
+                return;
+            _disposed = true;
+            Movement.Dispose();
+            Actions.Dispose();
+            Communication.Dispose();
+            Character.Dispose();
+            Inventory.Dispose();
+            EntityObjects.Dispose();
+        }
+
+        private static SpellTable SpellMetadata()
+        {
+            const string header =
+                "Spell ID,Name,Flags [Hex],IsUntargetted,TargetMask [Hex]";
+            const string row = "1,Runtime Fixture,0x0,true,0x0";
+            return SpellTable.LoadFromReader(
+                new System.IO.StringReader($"{header}\n{row}"));
+        }
+
+        private static WorldSession.EntitySpawn Spawn(
+            uint guid,
+            ushort instance)
+        {
+            var position = new CreateObject.ServerPosition(
+                0x01010001u,
+                10f,
+                20f,
+                5f,
+                1f,
+                0f,
+                0f,
+                0f);
+            var timestamps = new PhysicsTimestamps(
+                Position: 1,
+                Movement: 1,
+                State: 1,
+                Vector: 1,
+                Teleport: 0,
+                ServerControlledMove: 1,
+                ForcePosition: 0,
+                ObjDesc: 1,
+                Instance: instance);
+            var physics = new PhysicsSpawnData(
+                RawState: (uint)(
+                    PhysicsStateFlags.ReportCollisions
+                    | PhysicsStateFlags.Missile),
+                Position: position,
+                Movement: null,
+                AnimationFrame: null,
+                SetupTableId: 0x02000001u,
+                MotionTableId: null,
+                SoundTableId: null,
+                PhysicsScriptTableId: null,
+                Parent: null,
+                Children: null,
+                Scale: null,
+                Friction: null,
+                Elasticity: null,
+                Translucency: null,
+                Velocity: new Vector3(10f, 0f, 0f),
+                Acceleration: null,
+                AngularVelocity: null,
+                DefaultScriptType: null,
+                DefaultScriptIntensity: null,
+                Timestamps: timestamps);
+            return new WorldSession.EntitySpawn(
+                guid,
+                position,
+                0x02000001u,
+                Array.Empty<CreateObject.AnimPartChange>(),
+                Array.Empty<CreateObject.TextureChange>(),
+                Array.Empty<CreateObject.SubPaletteSwap>(),
+                null,
+                null,
+                "runtime projectile",
+                null,
+                null,
+                null,
+                PhysicsState: physics.RawState,
+                InstanceSequence: instance,
+                MovementSequence: 1,
+                ServerControlSequence: 1,
+                PositionSequence: 1,
+                Physics: physics);
+        }
+    }
+}