refactor(runtime): expose canonical gameplay state

Move character options and movement skills into the Runtime-owned character graph, expose borrowed inventory, character, and social views, and route retained UI state commands through generation-gated typed Runtime contracts. Preserve the existing synchronous wire path while deleting the App-owned option and skill mirrors and extending normalized parity checkpoints.

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

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

@@ -6,6 +6,44 @@ namespace AcDream.Runtime.Tests.Gameplay;
 
 public sealed class RuntimeInventoryStateTests
 {
+    [Fact]
+    public void ViewBorrowsTransactionShortcutAndManaOwners()
+    {
+        using var entities = new RuntimeEntityObjectLifetime();
+        using var inventory = new RuntimeInventoryState(entities);
+        inventory.Shortcuts.Replace(
+        [
+            new AcDream.Core.Items.ShortcutEntry(3, 0x80000001u, 0u),
+            new AcDream.Core.Items.ShortcutEntry(4, 0u, 42u),
+        ]);
+        inventory.ItemMana.OnQueryItemManaResponse(
+            0x80000001u,
+            0.75f,
+            valid: true);
+        inventory.Transactions.IncrementBusyCount();
+
+        RuntimeInventoryStateSnapshot snapshot = inventory.View.Snapshot;
+
+        Assert.Equal(2, snapshot.ShortcutCount);
+        Assert.Equal(1, snapshot.ItemManaCount);
+        Assert.Equal(1, snapshot.BusyCount);
+        Assert.False(snapshot.CanBeginRequest);
+        Assert.True(inventory.View.TryGetShortcut(
+            3,
+            out RuntimeShortcutSnapshot itemShortcut));
+        Assert.Equal(
+            new RuntimeShortcutSnapshot(3, 0x80000001u, 0u),
+            itemShortcut);
+        Assert.True(inventory.View.TryGetShortcut(
+            4,
+            out RuntimeShortcutSnapshot spellShortcut));
+        Assert.Equal(new RuntimeShortcutSnapshot(4, 0u, 42u), spellShortcut);
+        Assert.True(inventory.View.TryGetItemMana(
+            itemShortcut.ObjectId,
+            out float fraction));
+        Assert.Equal(0.75f, fraction);
+    }
+
     [Fact]
     public void OwnsOneGameplayGraphOverExactEntityObjectTable()
     {