Christian Rocha’s July 12 Crush commit says “Generated with Crush” and lists Charm Crush as co-author. It adds a scrollable sidebar to the terminal coding agent. The interesting part is not the credit line; it is that the feature touches focus, input, geometry, and stale UI state all at once.
The repo evidence
The four-file diff adds a sidebar focus state, binds l/→ into it and h/← back to chat, tracks a virtual scroll offset, clamps it to current content height, and resets it when a session changes. The renderer reserves room for an auto-hiding scrollbar, but keeps it visible while the sidebar owns focus. That is 158 additions and 29 deletions, not a cosmetic label swap.
The transferable skill
Give agent-assisted UI work a boundary it can make coherent: here, “sidebar focus and scrolling” has explicit entry, exit, navigation, clamp, and reset invariants. Then review those invariants across the route. A pretty screenshot would miss the failure where a new session inherits an old scroll position, or a keyboard user cannot return to chat.
The limit
The public commit proves that the maintainer attributed agent use; it does not reveal the prompt, the division of authorship, or exhaustive test coverage. The next useful receipt is behavior under session changes, tiny terminals, and mouse/keyboard handoffs—not a stronger story about who “really” wrote the sidebar.