Source pages: what is the newsroom, what is the target site

On src/sites/sgit.ai/partnerships/vault-key-management.html the reader could not tell whether the intro was the target page's or a newsroom summary, and the page said "diagrams" it did not show. Label the sections (newsroom chrome, target site navigation, target site content), show the target site's name and favicon-style badge on the sheet, and where the source names an image the snapshot did not bring home, say so in place ("image on the live page, not in the snapshot").

Done when: every source page has the badge and the image placeholders; the live ↗ link opens the target site.