Feature Request: `/btw` — Interrupt & Ask Mid-Operation

What is /btw?

Both Claude CLI and QWEN CLI have a /btw feature. While the model is mid-operation (generating code, reviewing files, exploring a codebase), the user can type /btw to interrupt the model and ask a question about what it's cur$

The model then:

1. Pauses its current output
2. Answers the user's question
3. Resumes (or adjusts) what it was doing

Use Cases

• Model is writing a long refactor, user realizes a clarification is needed → /btw "wait, does this handle the edge case where X is null?"
• Model is exploring a codebase → /btw "also check the auth middleware"
• Model is reviewing code → /btw "what does that function actually do?"

Why Extensions Can't Add This

None of Command Code's user-extension mechanisms can implement /btw:

/btw requires changes to the core conversation event loop: listening for a special input during model output streaming, interrupting the stream, injecting context, and resuming. This is CLI-internal plumbing.

Request

Please add a /btw (or similar interrupt-and-ask) slash command that lets users pause the model mid-operation to ask clarifying questions.

從 issue 中描述的核心對話事件迴圈和模型輸出串流路徑開始，追蹤生成期間如何處理使用者輸入。確定所需的中斷、問題注入和恢復行為；當使用者可以在操作進行期間呼叫 /btw、取得回答，並恢復或調整原始任務時，即視為完成。