diff --git a/build.bat b/build.bat
index 375a495..1e23b5e 100644
--- a/build.bat
+++ b/build.bat
@@ -7,7 +7,7 @@ REM    app        (default) build target geopro_desktop (incremental)
 REM    all        build all targets (incremental)
 REM    test       build + run unit tests via ctest
 REM    run        incremental build + launch geopro_desktop
-REM    rebuild    FORCE clean rebuild (--clean-first) + launch — use when
+REM    rebuild    FORCE clean rebuild (--clean-first) + launch - use when
 REM               incremental seems stale / changes not showing up
 REM    configure  force re-run CMake configure (after CMakeLists changes)
 REM
@@ -85,8 +85,8 @@ call :ensure
 exit /b %errorlevel%
 
 :rebuild
-REM 强制全量重编（--clean-first 先清后编），规避 ninja 增量偶发漏编；编后启动。
-REM 注意：若 geopro_desktop 正在运行，链接会因 exe 被占用失败(LNK1104)——先关掉 app。
+REM Force full clean rebuild (--clean-first) then launch; avoids flaky ninja incremental.
+REM If geopro_desktop is already running, link fails (LNK1104, exe locked) - close it first.
 call :ensure
 "%CMAKE%" --build "%BUILDDIR%" --target geopro_desktop --clean-first || exit /b 1
 "%BUILDDIR%\src\app\geopro_desktop.exe"