Checkpoint card

Save points down a rail, newest first. Each shows its diff as two bars that grow on arrival.

Checkpoint card is part of Pro.

Get Pro to try it live and copy its code, along with every other element in the library.

Terminal outputStdout streams in a line at a time out of a blur, the view follows, and a block cursor waits at the prompt. The exit code pops in at the end; collapse folds the body to the last line and the code.
Test resultsA hairline fills across the top as the suite runs. Each row's ring spins, then snaps to a tick or a cross; the counts roll.
Cost · token meterSession cost as a number that flows, not flips. A bar splits input from output tokens and reflows on a spring as turns land; each new turn drops into the list with its own price and the total rolls up to meet it.
Artifact panelA side canvas for the long thing the model made. Versions sit in a segmented strip; switching crossfades the document through a blur while the panel resizes on a spring.
Diff viewHunks slide in one after another, each line out of a blur with its own tint. Accept a hunk and its removed lines fold shut while the added ones settle to plain ink; reject and the reverse happens.
Generated imageThe picture resolves the way diffusion looks from across the room: washed-out colour fields under a heavy blur first, then the blur drains and the colour comes up. A hairline tracks progress; the frame breathes once at the end.