fix(client): restore retail interaction parity

Harden keyboard and camera routing, inventory and vendor interactions, chat/emotes, relog portal flow, and paperdoll rendering. Add retail research, connected gate coverage, and release-gate validation.

tests/AcDream.Core.Tests/Items/ExternalContainerStateTests.cs

@@ -94,6 +94,40 @@ public sealed class ExternalContainerStateTests
         Assert.Equal(2, delivered);
     }
 
+    [Fact]
+    public void OpenedCorpseHistoryMatchesRetailSetAndDeleteLifetime()
+    {
+        var state = new ExternalContainerState();
+        const uint corpse = 0x70000010u;
+
+        Assert.True(state.RequestOpen(corpse, isCorpse: true));
+        Assert.True(state.HasCorpseBeenOpened(corpse));
+        Assert.Equal(1, state.OpenedCorpseCount);
+
+        state.ApplyViewContents(corpse);
+        state.ApplyClose(corpse);
+        Assert.True(state.HasCorpseBeenOpened(corpse));
+        Assert.True(state.SetCorpseDeleted(corpse));
+        Assert.False(state.HasCorpseBeenOpened(corpse));
+
+        state.RequestOpen(corpse, isCorpse: true);
+        Assert.True(state.Reset());
+        Assert.False(state.HasCorpseBeenOpened(corpse));
+        Assert.Equal(0, state.OpenedCorpseCount);
+    }
+
+    [Fact]
+    public void RepeatedGroundObjectRequestStillRecordsCorpseIdentity()
+    {
+        var state = new ExternalContainerState();
+        const uint corpse = 0x70000011u;
+
+        Assert.True(state.RequestOpen(corpse));
+        Assert.False(state.RequestOpen(corpse, isCorpse: true));
+
+        Assert.True(state.HasCorpseBeenOpened(corpse));
+    }
+
     private static ExternalContainerState Open(uint id)
     {
         var state = new ExternalContainerState();