Visual PRs

A reviewer should understand what changed and see that it works before reading a single line of the How. Words alone don't do that. Evidence you made for the PR does: the same input rendered on main and on the branch, the motion slowed down until the easing can be judged, the edge cases cropped and zoomed in, and the numbers measured.

The reference PRs this skill is distilled from are cristicretu/diri #459, #460, #464, #465 and #476. references/examples.md walks through what each one did.

The shape of the body

<1–2 paragraphs, plain words: what was wrong or missing, as a user feels it,
 and what is different now. Nothing else above the first figure.>

## Before and after          (or name what is shown: "Hovering a session")

**Cross-project hover.** <caption: the input, what differs, where to look>

| main | this branch |
|---|---|
| ![main: …](./main-dark.png) | ![this branch: …](./branch-dark.png) |