P: Adobe Portfolio: Sync Lr image alt text to HTML alt attributes on published gallery pages

When a Portfolio page uses a Lightroom CC gallery, the alt text field set in Lightroom CC's Info panel (XMP metadata) is not populated in the HTML alt attribute of gallery images on the published Portfolio site.

All gallery images currently render with no alt attribute at all — confirmed via JavaScript audit on both the Portfolio preview URL and the live published site. This is a WCAG 2.1 Level AA failure (Success Criterion 1.1.1: Non-text Content).

Requested fix: Adobe Portfolio should read the alt text field from linked Lightroom CC gallery images and use it as the HTML alt attribute for each published image. Alternatively, Portfolio should expose a dedicated per-image alt text input in the Manage Images editor, separate from the visible caption field.

The caption field is not a suitable substitute — it is displayed visually on the page and serves a different purpose than accessibility alt text.