fix(tools): 修复setup_input.bat中文编码问题

移除bat文件中的中文注释，改为纯ASCII避免cmd编码错误

Task: P-011

tools/input-setup/setup_input.bat

@@ -1,11 +1,11 @@
 @echo off
 setlocal enabledelayedexpansion
 
-REM === ChildHood Input Setup - 创建 v0.1 InputAction 资产 + 更新 IMC ===
+REM === ChildHood Input Setup - Create v0.1 InputAction assets + update IMC ===
 REM
-REM 用法:
-REM   setup_input.bat              (默认模式，完成后退出编辑器)
-REM   setup_input.bat --no-quit    (完成后保持编辑器打开)
+REM Usage:
+REM   setup_input.bat              (default, editor quits after done)
+REM   setup_input.bat --no-quit    (keep editor open)
 
 set "SCRIPT_DIR=%~dp0"
 set "PROJECT_DIR=%SCRIPT_DIR%..\.."
@@ -14,6 +14,7 @@ set "UPROJECT=%PROJECT_ROOT%\ChildHood.uproject"
 
 REM ---- Defaults ----
 set "NO_QUIT=0"
+set "DRY_RUN=0"
 
 REM ---- Parse Arguments ----
 :parse_args
@@ -65,8 +66,7 @@ if "%UE_EDITOR%"=="" (
 if "%UE_EDITOR%"=="" (
     echo.
     echo [ERROR] UE5 Editor not found!
-    echo   Set UE5_ROOT to your UE5 install directory, e.g.:
-    echo   set UE5_ROOT=C:\Program Files\Epic Games\UE_5.7
+    echo   Set UE5_ROOT, e.g.: set UE5_ROOT=C:\Program Files\Epic Games\UE_5.7
     echo.
     exit /b 1
 )
@@ -104,7 +104,7 @@ if "%DRY_RUN%"=="1" (
 )
 
 REM ---- Execute ----
-echo [InputSetup] Launching UE5 Editor (command line mode)...
+echo [InputSetup] Launching UE5 Editor ...
 echo.
 
 "!UE_EDITOR!" "!UPROJECT_FWD!" !CMD_ARGS!
@@ -112,9 +112,9 @@ echo.
 set "EXIT_CODE=!ERRORLEVEL!"
 echo.
 if "!EXIT_CODE!"=="0" (
-    echo [InputSetup] 完成！编辑器已退出。
+    echo [InputSetup] Done. Editor exited.
 ) else (
-    echo [InputSetup] 编辑器退出码: !EXIT_CODE!
+    echo [InputSetup] Editor exit code: !EXIT_CODE!
 )
 exit /b !EXIT_CODE!
 
@@ -125,16 +125,8 @@ echo.
 echo   Usage: setup_input.bat [options]
 echo.
 echo   Options:
-echo     --no-quit     保持编辑器打开
-echo     --dry-run     仅打印命令不执行
-echo     --help, -h    显示帮助
-echo.
-echo   创建的资产:
-echo     IA_Interact        (E 键)
-echo     IA_Cancel          (ESC 键)
-echo     IA_SwitchInteract  (Tab 键)
-echo.
-echo   修改的资产:
-echo     IMC_Default        (添加上述映射)
+echo     --no-quit     Keep editor open after done
+echo     --dry-run     Print command without executing
+echo     --help, -h    Show help
 echo.
 exit /b 0