Slice into tickets

Small pieces of work, each one naming what has to finish before it can start.

#0001done
Redesign the item layout
#0002ready-for-agent
Show item details
#0003blocked by #0002
Add item source
#0004blocked by #0002
Remove retired fields
#0005blocked by #0002
Empty & error states
The frontier
An agent can grab this next, on its own.