[FEATURE] Sticky user prompt at top of viewport during long responses

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

When Claude generates a long response, the original user message scrolls out of view. To recall what was asked, you have to scroll all the way back up, losing your place in the response.

Proposed Solution

Pin the user's prompt message at the top of the viewport while scrolling through Claude's response — similar to VS Code's "Sticky Scroll" feature that keeps the current scope/context visible at the top of the editor.

Alternative Solutions

Using tmux split panes to keep context visible, or scrolling back and forth manually.

Priority

Medium - Would be very helpful

Feature Category

Interactive mode (TUI)

Additional Context

VS Code's Sticky Scroll is the UX reference — it pins the current code scope at the top so you always know where you are.