diff --git a/bin/emrg b/bin/emrg
index 78aaca60..a3439c28 100755
--- a/bin/emrg
+++ b/bin/emrg
@@ -22,4 +22,12 @@ PREFIX="$(dirname "$DIR")"
 export PATH="$DIR:$PATH"
 export PYTHONPATH="$PREFIX/source:$PREFIX/lib:$PYTHONPATH"
 export PYTHONDONTWRITEBYTECODE=1
-exec "$DIR/python" -m emrg "$@"
+# R100: Windows 下 bin/python（复制品）缺 DLL 不可用（DLL 在 python-dist/ 根）→
+# 探测 python-dist 里的 exe（与 emrg.cmd 一致）；POSIX 用 bin/python 软链。
+PY_BIN="$DIR/python"
+if [ -e "$DIR/python-dist/python.exe" ]; then
+  PY_BIN="$DIR/python-dist/python.exe"
+elif [ -e "$DIR/python-dist/python3.13.exe" ]; then
+  PY_BIN="$DIR/python-dist/python3.13.exe"
+fi
+exec "$PY_BIN" -m emrg "$@"
diff --git a/bin/emrgd b/bin/emrgd
index 87497f0b..82c71ff0 100755
--- a/bin/emrgd
+++ b/bin/emrgd
@@ -16,4 +16,12 @@ PREFIX="$(dirname "$DIR")"
 export PATH="$DIR:$PATH"
 export PYTHONPATH="$PREFIX/source:$PREFIX/lib:$PYTHONPATH"
 export PYTHONDONTWRITEBYTECODE=1
-exec "$DIR/python" -m emrg.server "$@"
+# R100: Windows 下 bin/python（复制品）缺 DLL 不可用（DLL 在 python-dist/ 根）→
+# 探测 python-dist 里的 exe（与 emrgd.cmd 一致）；POSIX 用 bin/python 软链。
+PY_BIN="$DIR/python"
+if [ -e "$DIR/python-dist/python.exe" ]; then
+  PY_BIN="$DIR/python-dist/python.exe"
+elif [ -e "$DIR/python-dist/python3.13.exe" ]; then
+  PY_BIN="$DIR/python-dist/python3.13.exe"
+fi
+exec "$PY_BIN" -m emrg.server "$@"
diff --git a/packaging/build-runtime.sh b/packaging/build-runtime.sh
index 6dd3799a..404d5ef8 100755
--- a/packaging/build-runtime.sh
+++ b/packaging/build-runtime.sh
@@ -55,6 +55,11 @@ cp -R "$PY_ROOT/." "$DIST/bin/python-dist/"
     # Windows：Git Bash 的 ln -s 需管理员权限（软链创建失败）→ 用复制替代
     cp "$PYEXE" python.exe
     cp "$PYEXE" python3.exe
+    # R100：python-build-standalone 的 DLL（python313.dll/vcruntime140*.dll 等）
+    # 在 python-dist/ 根目录——bin/python.exe 复制品缺 DLL 不可用（Windows loader
+    # 找不到 → 启动失败）。把根目录 *.dll 一并复制到 bin/，使 PATH 里的
+    # python 命令（session-scoped 脚本）可用。
+    cp python-dist/*.dll . 2>/dev/null || true
   else
     ln -sfn python-dist/bin/python3.13 python
     ln -sfn python-dist/bin/python3.13 python3