refactor(runtime): close canonical gameplay ownership

Unify the toolbar shortcut manager with Runtime inventory state, route retail-ordered shortcut and spellbook command effects through the canonical owners, and make retained controllers borrow those exact instances. Remove the item-interaction transaction fallback and add graphical/no-window parity plus failure-safe terminal ownership-ledger coverage.

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

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

@@ -115,7 +115,7 @@ public sealed class RuntimeCharacterStateTests
     }
 
     [Fact]
-    public void DisposalRetriesObserverFailuresAndClearsBothOwners()
+    public void DisposalReportsObserverFailuresAfterTerminalConvergence()
     {
         var state = new RuntimeCharacterState();
         state.Spellbook.OnSpellLearned(7u);
@@ -143,13 +143,13 @@ public sealed class RuntimeCharacterStateTests
             state.Dispose);
 
         Assert.Equal(2, error.InnerExceptions.Count);
-        Assert.False(state.IsDisposed);
+        Assert.True(state.IsDisposed);
         Assert.False(state.Spellbook.Knows(7u));
         Assert.Null(state.LocalPlayer.Get(
             AcDream.Core.Player.LocalPlayerState.VitalKind.Health));
+        Assert.True(state.CaptureOwnership().IsConverged);
 
         state.Dispose();
-        state.Dispose();
 
         Assert.True(state.IsDisposed);
     }
@@ -254,4 +254,77 @@ public sealed class RuntimeCharacterStateTests
         Assert.True(first.View.Snapshot.SpellbookRevision > 0);
         Assert.Equal(0, second.View.Snapshot.SpellbookRevision);
     }
+
+    [Fact]
+    public void SpellbookCommandsFollowRetailLocalAndOutboundOrder()
+    {
+        using var state = new RuntimeCharacterState();
+        var order = new List<string>();
+        state.Spellbook.SpellbookChanged += () => order.Add("local");
+        state.Spellbook.DesiredComponentsChanged += () => order.Add("local");
+
+        Assert.True(state.TryAddFavorite(
+            0,
+            0,
+            42u,
+            () => order.Add("send")));
+        Assert.Equal(["local", "send"], order);
+        Assert.Equal([42u], state.Spellbook.GetFavorites(0));
+
+        order.Clear();
+        state.SetSpellbookFilter(0x3FFEu, () => order.Add("send"));
+        Assert.Equal(["local", "send"], order);
+        Assert.Equal(0x3FFEu, state.Spellbook.SpellbookFilters);
+
+        order.Clear();
+        Assert.True(state.TrySetDesiredComponent(
+            0x68000001u,
+            0u,
+            () => order.Add("send")));
+        Assert.Equal(["send", "local"], order);
+        Assert.True(state.Spellbook.DesiredComponents.ContainsKey(
+            0x68000001u));
+        Assert.Equal(0u, state.Spellbook.DesiredComponents[0x68000001u]);
+
+        order.Clear();
+        state.ClearDesiredComponents(() => order.Add("send"));
+        Assert.Equal(["send", "local"], order);
+        Assert.Empty(state.Spellbook.DesiredComponents);
+
+        Assert.Throws<InvalidOperationException>(
+            () => state.TrySetDesiredComponent(
+                0x68000002u,
+                10u,
+                () => throw new InvalidOperationException("transport")));
+        Assert.Equal(10u, state.Spellbook.DesiredComponents[0x68000002u]);
+    }
+
+    [Fact]
+    public void InvalidSpellbookCommandsDoNotPublishOrMutate()
+    {
+        using var state = new RuntimeCharacterState();
+        int sends = 0;
+
+        Assert.False(state.TryAddFavorite(
+            8,
+            0,
+            42u,
+            () => sends++));
+        Assert.False(state.TryRemoveFavorite(
+            -1,
+            42u,
+            () => sends++));
+        Assert.False(state.TrySetDesiredComponent(
+            0u,
+            1u,
+            () => sends++));
+        Assert.False(state.TrySetDesiredComponent(
+            1u,
+            5001u,
+            () => sends++));
+
+        Assert.Equal(0, sends);
+        Assert.Empty(state.Spellbook.GetFavorites(0));
+        Assert.Empty(state.Spellbook.DesiredComponents);
+    }
 }