fix(combat): escape occupied login positions

Port retail's radius-aware placement ring so a relogging player is seated beside creatures occupying the saved location, and register the local body in the shared resolved-shadow pipeline. Route new forward movement and jump through AbortAutomaticAttack so repeat combat cancels immediately on movement.

Co-Authored-By: Codex <codex@openai.com>

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

@@ -128,6 +128,57 @@ public sealed class CombatAttackControllerTests
         Assert.Equal(0f, controller.PowerBarLevel);
     }
 
+    [Fact]
+    public void MovementAbort_DuringRepeat_SendsCancelAndPreventsNextAttack()
+    {
+        double now = 20d;
+        int cancels = 0;
+        var sent = new List<(AttackHeight Height, float Power)>();
+        var combat = new CombatState();
+        using var controller = new CombatAttackController(
+            combat,
+            canStartAttack: () => true,
+            sendAttack: (height, power) =>
+            {
+                sent.Add((height, power));
+                return true;
+            },
+            sendCancelAttack: () => cancels++,
+            autoRepeatAttack: () => true,
+            now: () => now);
+        combat.SetCombatMode(CombatMode.Melee);
+
+        controller.PressAttack(AttackHeight.Medium);
+        now += 0.5d;
+        controller.ReleaseAttack();
+        Assert.Single(sent);
+
+        controller.HandleMovementInput(
+            InputAction.MovementForward, ActivationType.Press);
+        combat.OnAttackDone(1u, 0u);
+
+        Assert.Equal(1, cancels);
+        Assert.Single(sent);
+        Assert.False(controller.BuildInProgress);
+        Assert.Equal(0f, controller.PowerBarLevel);
+    }
+
+    [Fact]
+    public void MovementAbort_WhileIdle_DoesNotSendCancel()
+    {
+        int cancels = 0;
+        var combat = new CombatState();
+        using var controller = new CombatAttackController(
+            combat,
+            canStartAttack: () => true,
+            sendAttack: (_, _) => true,
+            sendCancelAttack: () => cancels++);
+
+        controller.AbortAutomaticAttack();
+
+        Assert.Equal(0, cancels);
+    }
+
     private static CombatAttackController Create(
         CombatState combat,
         Func<double> now,