chore: update visual regression baseline

[github-actions]

Visual Baseline Update

Re-recorded docs/snapshots/baseline.json from main on a runner, so PR comparisons
have something to diff against in the same rendering environment.

How to review

The diff lists one line per example. Lines that changed mean the example draws
something different than the last baseline — check those were intended.

[changeset-bot]

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Latest commit: 8f8e23d

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commit: 8f8e23d