chore(unity): 固定Unity CLI Loop本地包并移除UnitySkills依赖

Client/Packages/io.github.hatayama.uloopmcp/Editor/Compilation/ICompiledAssemblyBuilder.cs

@@ -0,0 +1,14 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace io.github.hatayama.uLoopMCP
+{
+    internal interface ICompiledAssemblyBuilder
+    {
+        bool SupportsAutoPrewarm();
+
+        Task<CompiledAssemblyBuildResult> BuildAsync(
+            DynamicCompilationPlan plan,
+            CancellationToken ct = default);
+    }
+}