fix(frontend): 修复文件管理器删除与上传稳定性

补齐文件管理器右键子菜单点击展开，新增拖拽上传目标确认，
并在上传完成后自动刷新当前可见目录

目录删除改为区分仅删空目录与强制递归删除，删除后自动回退
失效路径，避免文件树持续报 No such file

同步后端 sftp:rmdir 的 recursive 分支，并将关于页与版本检查
默认仓库链接切换到 Micah123321/nexus-terminal

packages/frontend/src/locales/en-US.json

@@ -558,6 +558,13 @@
       "confirmDeleteMultiple": "Are you sure you want to delete the selected {count} items? This cannot be undone.",
       "confirmDeleteFolder": "Are you sure you want to delete the directory \"{name}\" and all its contents? This cannot be undone.",
       "confirmDeleteFile": "Are you sure you want to delete the file \"{name}\"? This cannot be undone.",
+      "confirmUploadToPath": "Upload {count} dropped item(s) to \"{path}\"?",
+      "deleteIncludedFiles": ", plus {count} file(s)",
+      "confirmDeleteDirectoryEmptyOnly": "This will delete {count} directory(s) ({names}){fileSummary}.\n\nIt will only remove empty directories. Non-empty directories will fail.",
+      "confirmDeleteDirectoryRecursive": "This will recursively delete {count} directory(s) ({names}){fileSummary}.\n\nThis action cannot be undone.",
+      "deleteEmptyOnly": "Delete Empty Only",
+      "moreDeleteOptions": "More Options",
+      "forceRecursiveDelete": "Force Recursive Delete",
       "enterNewName": "Enter the new name for \"{oldName}\":",
       "enterNewPermissions": "Enter new permissions for \"{name}\" (octal, e.g., 755):",
       "enterFileName": "Enter the name for the new file:"

packages/frontend/src/locales/ja-JP.json

@@ -543,6 +543,13 @@
             "confirmDeleteFolder": "フォルダー \"{name}\" とそのすべての内容を削除しますか？この操作は元に戻せません。",
             "confirmDeleteMultiple": "選択した {count} 個の項目を削除しますか？この操作は元に戻せません。",
             "confirmOverwrite": "ファイル \"{name}\" はすでに存在します。上書きしますか？",
+            "confirmUploadToPath": "ドラッグした {count} 件の項目を \"{path}\" にアップロードしますか？",
+            "deleteIncludedFiles": "、および {count} 件のファイル",
+            "confirmDeleteDirectoryEmptyOnly": "{count} 個のディレクトリ（{names}）{fileSummary} を削除します。\n\nまず空ディレクトリのみ削除します。中身があるディレクトリは失敗します。",
+            "confirmDeleteDirectoryRecursive": "{count} 個のディレクトリ（{names}）{fileSummary} を再帰的に削除します。\n\nこの操作は元に戻せません。",
+            "deleteEmptyOnly": "空ディレクトリのみ削除",
+            "moreDeleteOptions": "他の選択肢",
+            "forceRecursiveDelete": "再帰削除を強制",
             "enterFileName": "新しいファイルの名前を入力してください:",
             "enterFolderName": "新しいフォルダーの名前を入力してください:",
             "enterNewName": "\"{oldName}\" の新しい名前を入力してください:",

packages/frontend/src/locales/zh-CN.json

@@ -558,6 +558,13 @@
       "confirmDeleteMultiple": "确定要删除选定的 {count} 个项目吗？此操作不可撤销。",
       "confirmDeleteFolder": "确定要删除目录 \"{name}\" 及其所有内容吗？此操作不可撤销。",
       "confirmDeleteFile": "确定要删除文件 \"{name}\" 吗？此操作不可撤销。",
+      "confirmUploadToPath": "确认将 {count} 个拖入项目上传到 \"{path}\" 吗？",
+      "deleteIncludedFiles": "，以及 {count} 个文件",
+      "confirmDeleteDirectoryEmptyOnly": "将删除 {count} 个目录（{names}）{fileSummary}。\n\n先尝试仅删除空目录；非空目录会直接失败。",
+      "confirmDeleteDirectoryRecursive": "将强制递归删除 {count} 个目录（{names}）{fileSummary}。\n\n此操作不可撤销。",
+      "deleteEmptyOnly": "仅删除空目录",
+      "moreDeleteOptions": "更多选项",
+      "forceRecursiveDelete": "强制递归删除",
       "enterNewName": "请输入 \"{oldName}\" 的新名称:",
       "enterNewPermissions": "请输入 \"{name}\" 的新权限 (八进制, 例如 755):",
       "enterFileName": "请输入新文件的名称:"