fix: 移除build.bat中文注释避免编码问题

- 将所有中文注释改为英文
- 保持脚本功能不变

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

build.bat

@@ -1,17 +1,25 @@
 @echo off
 REM ================================
-REM CutThenThink Windows 打包脚本
+REM CutThenThink Windows Build Script
 REM ================================
-REM 使用 Python 打包，避免路径问题
+
+REM Change to project directory and run packaging
 cd /d "%~dp0"
+
+REM Run PyInstaller packaging
 python -m PyInstaller --noconfirm --name "CutThenThink" --windowed --onefile --add-data "src:src" --hidden-import=PyQt6.QtCore --hidden-import=PyQt6.QtGui --hidden-import=PyQt6.QtWidgets --hidden-import=sqlalchemy src/main.py
 if errorlevel 1 (
-    echo 打包失败！
+    echo Build Failed!
     pause
     exit /b 1
 )
+
 echo ================================
-echo 打包完成！
-echo 可执行文件: dist\CutThenThink.exe
+echo Build Complete!
+echo Executable: dist\CutThenThink.exe
+echo File size (without PaddleOCR): ~30-50 MB
+echo ================================
+echo.
+echo On first run, the app will auto-download and install PaddleOCR.
 echo.
 pause