Cards open to be read — the mobile detail screen turns read-only, editing moves behind a transactional Save

CardDetailScreen renders title, inline-Markdown body, and a quiet dates
footer; all writing moves to the new CardEditScreen, a full-screen cover
with segmented Details/Body panes. Drafts commit in one perform bracket
on Save only — Cancel guards dirty drafts with a discard confirmation,
and a failed write keeps the sheet and its drafts and raises an alert
instead of dismissing. CardAttributesSection becomes a pure
binding-driven editor with no write path of its own. The UI test walk
crosses the new split, with body-pane and discard coverage, and a
deterministic replaceAllText helper retires the flaky ⌘A select-all.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

KanbanMobile/CHANGELOG.md

@@ -1,5 +1,9 @@
 **August 2026**
 
+Tapping a card now shows a readable view of its title and text with formatting, instead of dropping straight into the editor.
+
+Editing a card happens on its own screen with Details and Body sections, and changes apply only when you tap Save.
+
 Press and hold a lane or card to drag it into a new order.
 
 Settings now lives behind the gear button on the board list instead of a separate tab, so boards fill the whole screen.