MediaValue gains an Attribution credit resolved through the existing
MediaResolver context hook. The BlockNote image case renders width and
align presets, alt text, an optional link wrap, and the attribution chip
in chip, chipHover, and below modes with the same themed markup as the
cms page-builder image block. Legacy url-and-caption blocks render
byte-identical to the previous output.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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