Codex-style turn timeline and local conversation search for DeepSeek Harness Web

DeepSeek Harness 本地归档会话中心：全文搜索、回收站、撤销、自动保护快照与备份恢复。Local archived-chat search, recycle bin, undo, automatic protection snapshots, and backup restore for DeepSeek Harness.

Wallpaper Engine library as the DSH web GUI background — video/web/still wallpapers, rotation lists, search, resource monitor, bilingual UI.

A temporal context graph, a memory API, retrieval primitives, and a multiple-platform integration mesh — designed to be embedded into any host process.