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

Client/Packages/io.github.hatayama.uloopmcp/Runtime/SimulateKeyboard/KeySymbolMap.cs

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+#nullable enable
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace io.github.hatayama.uLoopMCP
+{
+    public static class KeySymbolMap
+    {
+        private static readonly Dictionary<string, string> Symbols = new()
+        {
+            { "Space", "\u2423" },           // ␣
+            { "Enter", "\u23CE" },           // ⏎
+            { "UpArrow", "\u2191" },         // ↑
+            { "DownArrow", "\u2193" },       // ↓
+            { "LeftArrow", "\u2190" },       // ←
+            { "RightArrow", "\u2192" },      // →
+            { "Tab", "\u21E5" },             // ⇥
+            { "Escape", "Esc" },
+            { "ContextMenu", "Menu" },
+            { "PrintScreen", "PrtSc" },
+            { "ScrollLock", "ScrLk" },
+        };
+
+        // Meta key maps to ⌘ on macOS, ⊞ on Windows/Linux
+        private static bool IsMac =>
+            Application.platform == RuntimePlatform.OSXEditor ||
+            Application.platform == RuntimePlatform.OSXPlayer;
+
+        public static string GetSymbol(string keyName)
+        {
+            // Key.LeftMeta.ToString() returns "LeftWindows" in Input System
+            if (keyName == "LeftMeta" || keyName == "RightMeta" ||
+                keyName == "LeftWindows" || keyName == "RightWindows")
+            {
+                return IsMac ? "\u2318" : "\u229E"; // ⌘ or ⊞
+            }
+
+            if (keyName == "LeftCtrl" || keyName == "RightCtrl")
+            {
+                return IsMac ? "\u2303" : "Ctrl"; // ⌃ or Ctrl
+            }
+
+            if (keyName == "LeftAlt" || keyName == "RightAlt")
+            {
+                return IsMac ? "\u2325" : "Alt"; // ⌥ or Alt
+            }
+
+            if (keyName == "LeftShift" || keyName == "RightShift")
+            {
+                return IsMac ? "\u21E7" : "Shift"; // ⇧ or Shift
+            }
+
+            if (keyName == "Backspace")
+            {
+                return IsMac ? "\u232B" : "BS"; // ⌫ or BS
+            }
+
+            if (keyName == "Delete")
+            {
+                return IsMac ? "\u2326" : "Del"; // ⌦ or Del
+            }
+
+            if (Symbols.TryGetValue(keyName, out string symbol))
+            {
+                return symbol;
+            }
+
+            return keyName;
+        }
+
+        // Single non-ASCII characters render smaller than text in most fonts
+        public static bool IsGlyphSymbol(string symbol)
+        {
+            return symbol.Length == 1 && symbol[0] > 127;
+        }
+    }
+}