docs: implementation plan for DN items expand
Single-task, single-file plan: add chevron + items panel to
DeliveryNoteRowComponent on /deliveries. Lifts expand state to the
page (Set<string>), passes expanded + onToggle + items down. Items
filtered client-side from page data; empty-state fallback to
/delivery-notes/[id].
7 steps: imports, locate call site, page-level state, prop-drill,
update component signature + render chevron + items panel, smoke check
via agent-browser, commit.
Co-Authored-By: Claude Code <noreply@anthropic.com>
Dave
0984b7513e