优化：CSV编辑模式/PDF导出重构/收藏夹bug修复/移除useLocalStorage

- FileEditorPanel: CSV新增预览/编辑切换、PDF导出；提取openPrintWindow公共函数
- useFavorites: 修复find回调中fav变量遮蔽bug（f.path）、sort改为副本排序
- useFavoriteFiles/DeviceTest: 移除useLocalStorage抽象层，直接管理localStorage
- system.ts: createDir/createFile签名改为(parent, name)两参数拼接
- useFileOperations: createNewFile移除无用content参数
- 清理OpenClaw相关Wails绑定

web/src/components/FileSystem/composables/useFavorites.ts

@@ -24,7 +24,7 @@ export function useFavorites() {
    * 排序收藏列表：置顶项在前（按 pinnedAt 降序），非置顶项按添加时间降序
    */
   const sortFavorites = () => {
-    favorites.value.sort((a, b) => {
+    favorites.value = [...favorites.value].sort((a, b) => {
       // 置顶项优先
       if (a.pinnedAt && !b.pinnedAt) return -1
       if (!a.pinnedAt && b.pinnedAt) return 1
@@ -135,7 +135,7 @@ export function useFavorites() {
    */
   const togglePin = (path: string) => {
     const normalizedPath = normalizePath(path)
-    const fav = favorites.value.find(f => normalizePath(fav.path) === normalizedPath)
+    const fav = favorites.value.find(f => normalizePath(f.path) === normalizedPath)
     if (fav) {
       fav.pinnedAt = fav.pinnedAt ? undefined : Date.now()
       sortFavorites()
@@ -148,7 +148,7 @@ export function useFavorites() {
    */
   const isPinned = (path: string): boolean => {
     const normalizedPath = normalizePath(path)
-    const fav = favorites.value.find(f => normalizePath(fav.path) === normalizedPath)
+    const fav = favorites.value.find(f => normalizePath(f.path) === normalizedPath)
     return !!fav?.pinnedAt
   }
 
@@ -157,7 +157,7 @@ export function useFavorites() {
    */
   const updateFavoritePath = (oldPath: string, newName: string) => {
     const normalizedOld = normalizePath(oldPath)
-    const fav = favorites.value.find(f => normalizePath(fav.path) === normalizedOld)
+    const fav = favorites.value.find(f => normalizePath(f.path) === normalizedOld)
     if (!fav) return
 
     const separator = getPathSeparator(oldPath)