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.

src/AcDream.Runtime/GameRuntimeCommands.cs

@@ -67,6 +67,8 @@ public enum RuntimeMovementCommand
     Sit,
     Crouch,
     Sleep,
+    StopCompletely,
+    FinishJump,
 }
 
 public enum RuntimeChatChannel
@@ -160,6 +162,10 @@ public interface IRuntimeMovementCommands
         RuntimeGenerationToken expectedGeneration,
         RuntimeMovementCommand command);
 
+    RuntimeCommandResult ExecuteMotion(
+        RuntimeGenerationToken expectedGeneration,
+        uint motionCommand);
+
     RuntimeCommandResult SetIntent(
         RuntimeGenerationToken expectedGeneration,
         in Gameplay.MovementInput input);