draft

Draft polish for DeepSeek Harness: one-click LLM polish of your draft in the composer, rewrites it in place with session context · 草稿润色：发送前一键调用 LLM 润色草稿，结果回填输入框

Cursor-style draft chats for DeepSeek Harness (DSH): New Session reuses the empty draft — and only mints a fresh one when every draft has unsent text — so empty placeholders never stack, exactly like Cursor's (or Telegram's) chat list.