diff --git a/.gitignore b/.gitignore
index 5001a5e..b2ea3ee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ docs/.vuepress/dist
 .trae/
 .DS_Store
 *.log
+_publish/
diff --git a/build-and-publish.bat b/build-and-publish.bat
new file mode 100644
index 0000000..6d51315
--- /dev/null
+++ b/build-and-publish.bat
@@ -0,0 +1,133 @@
+@echo off
+setlocal EnableExtensions
+
+chcp 65001 >nul
+
+REM Paths and settings
+set "ROOT_DIR=%~dp0"
+set "PROJECT_DIR=%ROOT_DIR%"
+set "DIST_DIR=%PROJECT_DIR%docs\.vuepress\dist"
+set "PUBLISH_DIR=%PROJECT_DIR%_publish"
+set "REMOTE_URL=https://gitea.simengweb.com/si-meng-spec/build_notes_simengweb.git"
+set "BRANCH=main"
+
+REM Args
+set "LIGHT_FLAG=%~1"
+set "COMMIT_MSG=%~2"
+
+echo [Info] Working dir: %PROJECT_DIR%
+
+REM Pre-checks
+where npm >nul 2>&1
+if errorlevel 1 goto :npm_missing
+where git >nul 2>&1
+if errorlevel 1 goto :git_missing
+
+REM Install deps on first run
+if not exist "%PROJECT_DIR%node_modules" (
+  echo [Info] Installing deps ^(npm ci^)...
+  call npm ci
+  if errorlevel 1 goto :fail
+) else (
+  echo [Info] node_modules exists, skip install.
+)
+
+REM Light build mode
+if /I "%LIGHT_FLAG%"=="light" (
+  set "LIGHT_BUILD=1"
+  echo [Info] LIGHT_BUILD=1 enabled
+)
+
+set "NODE_OPTIONS=--max-old-space-size=4096"
+
+echo [Info] Building docs...
+call npm run docs:build
+if errorlevel 1 goto :fail
+
+if not exist "%DIST_DIR%" goto :no_dist
+
+REM Prepare publish repo
+if not exist "%PUBLISH_DIR%\.git" (
+  echo [Info] Cloning publish repo...
+  git clone "%REMOTE_URL%" "%PUBLISH_DIR%"
+  if errorlevel 1 goto :fail
+) else (
+  echo [Info] Updating publish repo...
+  pushd "%PUBLISH_DIR%"
+  git fetch --all
+  if errorlevel 1 goto :gitfail
+  git checkout "%BRANCH%"
+  if errorlevel 1 goto :gitfail
+  git reset --hard "origin/%BRANCH%"
+  if errorlevel 1 goto :gitfail
+  popd
+)
+
+echo [Info] Cleaning publish directory ^(keep .git^)...
+pushd "%PUBLISH_DIR%"
+for /f "delims=" %%F in ('dir /a /b') do (
+  if /I not "%%F"==".git" (
+    if exist "%%F" (
+      attrib -R "%%F" >nul 2>&1
+      rd /s /q "%%F" 2>nul
+      del /f /q "%%F" 2>nul
+    )
+  )
+)
+popd
+
+echo [Info] Copying dist to publish...
+robocopy "%DIST_DIR%" "%PUBLISH_DIR%" *.* /E /NFL /NDL /NP /NJH /NJS >nul
+if errorlevel 8 goto :fail
+
+pushd "%PUBLISH_DIR%"
+if defined GIT_USERNAME git config user.name "%GIT_USERNAME%"
+if defined GIT_EMAIL git config user.email "%GIT_EMAIL%"
+
+git add -A
+
+if "%COMMIT_MSG%"=="" set "COMMIT_MSG=Build: %DATE% %TIME%"
+
+set "HAS_CHANGES=1"
+git diff --cached --quiet
+if not errorlevel 1 set "HAS_CHANGES=0"
+
+if "%HAS_CHANGES%"=="0" (
+  echo [Info] No changes to commit; skipping push.
+) else (
+  git commit -m "%COMMIT_MSG%"
+  if errorlevel 1 (
+    popd
+    goto :fail
+  )
+  git push origin "%BRANCH%"
+  if errorlevel 1 (
+    popd
+    goto :fail
+  )
+  echo [Info] Pushed to %REMOTE_URL% ^(branch %BRANCH%^).
+)
+popd
+
+echo [Success] Build and publish done.
+exit /b 0
+
+:npm_missing
+echo [ERROR] npm not found. Please install Node.js.
+goto :fail
+
+:git_missing
+echo [ERROR] git not found. Please install Git.
+goto :fail
+
+:no_dist
+echo [ERROR] Dist directory not found: %DIST_DIR%
+goto :fail
+
+:gitfail
+echo [ERROR] Git operation failed.
+popd
+goto :fail
+
+:fail
+exit /b 1
\ No newline at end of file