参考所有分组，完成尽量多的内容

结论：OPFS负向守护补充showDirectoryPicker，禁止浏览器目录选择绕过OPFS持久化路径；未扩展smoke功能行为。

test-native.sh

@@ -389,7 +389,7 @@ grep -F '"parameters/rs274ngc.var"' web/test-browser-wasm-smoke-opfs-parameter-s
 grep -F '"parameters/rs274ngc.var.bak"' web/test-browser-wasm-smoke-opfs-parameter-sections.js >/dev/null
 grep -F 'const opfsOptions = options.opfs ?? (isOpfsAvailable() ? {} : false)' web/src/wasm-core.js >/dev/null
 grep -F 'OPFS cannot be disabled in browser contexts with OPFS support' web/src/wasm-core.js >/dev/null
-if grep -R -n -E 'localStorage|sessionStorage|indexedDB|showOpenFilePicker|showSaveFilePicker|webkitRequestFileSystem|FileReader' web/src; then
+if grep -R -n -E 'localStorage|sessionStorage|indexedDB|showOpenFilePicker|showSaveFilePicker|showDirectoryPicker|webkitRequestFileSystem|FileReader' web/src; then
     echo "browser app/wasm code must not add filesystem persistence outside OPFS" >&2
     exit 1
 fi