Give trips an optional one-liner (header.tagline) and description (markdown
content), surface them where they help, and fix the soft cover image — all
editable from admin.
- U1: header.cover_image blueprint field → pagemediaselect media picker.
- U2: new macros/cover.html.twig — single source for cover resolution
(author-selected → first journal image → none; missing file falls back)
and retina rendering (1x/2x cropResize + srcset). Merged resolve+render
into one macro since Twig macros can't return a Medium object.
- U3: trip-list card renders the one-liner (when set) and the retina cover.
- U4: trip-page in-column header gains the one-liner, an expandable
description, and a thin banner strip — gated behind a trip_header_extras
partial flag (default off) so the shared home active-trip view is
unchanged (R12/KTD4).
- U5: styles for the card/header one-liner, collapsible description
(max-height preview, not line-clamp, so it holds across paragraphs) and
the banner, with a mobile banner-height reduction.
Covers R1–R15. Verified with new Playwright specs + full trip/home/maps
regression against an isolated worktree dev server.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RDS6t8wcpbwKvvrxykVQ5K
