Detail header gains the author avatar with a two-line author block;
journeys say 'zusammengestellt am' instead of 'veröffentlicht am'.
Bearbeiten/Löschen move into the metabar for stories too (were at the
article bottom). StoryReader renders real document reference cards
(icon, title, date · von X an Y) instead of a placeholder link, person
chips get avatar initials, and journey items lose the doubled spacing.
Shared formatDocumentMetaLine() in geschichte/utils feeds both readers.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>