A collapsed section now shows what's inside it

To-do sections are collapsible, and the collapsed state is saved per device — so a section you (or a stray click) collapsed on the desktop stays collapsed there while your phone shows everything. That looked like data loss. It never was: the items were in your account the whole time, and we verified them directly in the database.

• A collapsed section now shows a quiet one-line preview of what's inside — the first item names plus "+N more" — so it can never be mistaken for empty. Tap it to expand.
• An actually-empty collapsed section shows no preview, so empty still reads as empty.
• The expanded view is unchanged — the preview only appears while the section is closed.