feat(core,presenter,app-iced): 存档三个写操作（重命名 / 删除 / 备份）+ 行操作区（M247 SAVESOPS）

core::game::saves 新增 write 模块，三个入口的第一句都是 boundary::guard：

- rename_world：saves/<old> → saves/<new>，撞名/同名/非法名字各自具名拒绝
- delete_world：递归删（不跟随符号链接、层级上限 64），先过边界校验
- backup_world：流式 zip（限额预检 → 临时文件 → 原子改名），
  <世界名>-YYYYMMDD-HHMMSS.zip，撞名顺延，绝不覆盖上一份

guard 三道判据（每次写前重做，不信任调用方）：名字必须是单段裸名字；
saves/ 必须是运行目录的真实直属子目录；世界目录必须是 saves/ 下的真目录
（解析后比父级，不比字符串前缀）。落点目录要求绝对路径（相对路径会落到进程 CWD，
实测过一次）。

presenter：SavesCommand 增 RenameWorld/DeleteWorld/BackupWorld，host 三个后台入口
写成功后重新列一遍目录并把「回执」挂在快照上（SavesOped：改名两端 / 被删的名字 /
备份落点+字节数+跳过的链接数）。SavesFailureView 增 file 与 op，写失败八类一一对应。
SavesState 增 draft / pending / confirm 三样交互态（草稿是行内输入缓冲，
pending 与 ModsState::pending 同一条先例，confirm 是删除确认框在等谁）。

app-iced：世界行右侧重命名/备份/删除；行内输入框改名（现成模态队列没有「输入变了」
这一条消息，用输入模态等于重写一套）；删除走现成 modal 的 Confirm，主按钮落点接在
app/update/dialog.rs。回执行画在卡片里（备份落点看不见就是静默失败）。

i18n：新增 25 条中英成对 key + 金表同步；删掉 M235 的「这一版只读」那条（写操作接上
之后它是假的）。出图夹具 ULL_SAVES_FIXTURE=rename|confirm|backed-up 三种形态。

crates/i18n/src/catalog/instances.rs

@@ -159,7 +159,6 @@ macro_rules! instances_entries {
             // 「这一版只读」，不会以为漏了删除按钮。`saves/` / `screenshots/` 是**目录名**，
             // 两套语言都原样保留（与 MODS 区的 `mods` 同一条口径）。
             InstancesSavesTitle => ("SAVES", "存档"),
-            InstancesSavesReadOnly => ("Read-only in this version: nothing here is moved or deleted.", "这一版只读：这里不移动、也不删除任何东西。"),
             InstancesSavesCount => ("{worlds} worlds · {shots} screenshots", "{worlds} 个世界 · {shots} 张截图"),
             InstancesSavesLoading => ("Reading saves/…", "正在读取 saves/…"),
             InstancesSavesEmpty => ("No worlds or screenshots yet — play once and they show up here.", "还没有世界或截图——玩一次就会出现在这里。"),
@@ -178,6 +177,34 @@ macro_rules! instances_entries {
             InstancesSavesReasonDir => ("the directory is not usable", "目录不可用"),
             InstancesSavesReasonInstance => ("the instance is gone", "实例已不存在"),
             InstancesSavesReasonOpen => ("the file manager did not start", "文件管理器没起来"),
+            // ── 存档**写操作**（M247 · SAVESOPS）：重命名 / 删除（二次确认）/ 备份导出。
+            // M235 那条「这一版只读」的 `InstancesSavesReadOnly` **已删**：写操作接上之后它就是假的
+            // （金表同步少了那一行，不是重排）。删除确认框的三句是**不可逆动作**的兜底，不许省。
+            InstancesSavesRename => ("Rename", "重命名"),
+            InstancesSavesBackup => ("Back up", "备份"),
+            InstancesSavesDelete => ("Delete", "删除"),
+            InstancesSavesRenamePlaceholder => ("New name for this world", "这个世界的新名字"),
+            InstancesSavesRenameConfirm => ("Rename", "改名"),
+            InstancesSavesCancel => ("Cancel", "取消"),
+            InstancesSavesBusy => ("Working…", "正在处理…"),
+            InstancesSavesDeleteTitle => ("Delete this world?", "删除这个世界？"),
+            InstancesSavesDeleteBody => ("{dir} and everything inside it will be deleted. This cannot be undone.", "{dir} 和它里面的全部内容都会被删除，且不能撤销。"),
+            InstancesSavesDeleteConfirm => ("Delete world", "删除世界"),
+            InstancesSavesRenamed => ("Renamed {from} → {to}.", "已把 {from} 改名为 {to}。"),
+            InstancesSavesDeleted => ("Deleted {dir}.", "已删除 {dir}。"),
+            InstancesSavesBackedUp => ("Backed up {dir} to {path} ({size}).", "已把 {dir} 备份到 {path}（{size}）。"),
+            InstancesSavesBackupSkipped => ("{count} symlinks skipped", "跳过 {count} 个符号链接"),
+            InstancesSavesRenameFailed => ("Could not rename {file}: {reason}", "重命名 {file} 失败：{reason}"),
+            InstancesSavesDeleteFailed => ("Could not delete {file}: {reason}", "删除 {file} 失败：{reason}"),
+            InstancesSavesBackupFailed => ("Could not back up {file}: {reason}", "备份 {file} 失败：{reason}"),
+            InstancesSavesReasonUnsafeName => ("the name is not usable", "名字不可用"),
+            InstancesSavesReasonSymlink => ("that path is a symbolic link (not followed)", "那个路径是符号链接（不跟随）"),
+            InstancesSavesReasonMissing => ("the world is gone", "那个世界已不在"),
+            InstancesSavesReasonNotDir => ("that is not a directory", "那不是目录"),
+            InstancesSavesReasonConflict => ("a world with that name already exists", "同名世界已存在"),
+            InstancesSavesReasonBoundary => ("that path is outside saves/", "那个路径落在 saves/ 之外"),
+            InstancesSavesReasonTooLarge => ("the world is too large for one zip", "这个世界太大，一个 zip 装不下"),
+            InstancesSavesReasonWrite => ("the write failed", "写盘失败"),
         } }
     };
 }