Fork assistant turns into new drafts (#1788)

* feat(chat): fork assistant turns into new drafts

Builds chat-history attachments on the daemon and routes them into draft composers so users can continue an assistant turn in an existing workspace tab or New Workspace.

* fix(chat): clean up fork draft handling

* fix(chat): address fork draft review feedback

* fix(server): build fork context from bounded timeline

* fix(app): restore assistant turn footer in streams

* fix(app): preserve fork draft setup

* fix(app): tighten assistant fork footers

* fix(app): lock active fork draft handoff

* fix(app): preserve attachment-only draft retries

* fix(app): unify composer attachment scopes

* fix(app): align chat history attachment labels

* fix(app): centralize attachment pill content

* fix(app): trim fork context for workspace naming

packages/app/src/i18n/resources/zh-CN.ts

@@ -245,6 +245,12 @@ export const zhCN: TranslationResources = {
       copyCode: "复制代码",
       copyTurn: "复制回合",
       copyMessage: "复制消息",
+      forkMenu: "分叉消息",
+      forkInNewTab: "分叉到新标签页",
+      forkInNewWorkspace: "分叉到新工作区",
+      forkUnavailable: "请更新主机以使用此功能。",
+      forkMissingWorkspace: "此 Agent 不在工作区中。",
+      forkFailed: "分叉聊天失败",
       openFile: "打开文件",
       copied: "已复制",
     },