`resolveTarget` gave a bag target the same string for `description` and
`effectSummary`, and the shop row renders both, so the slice's two flagship
offers showed "Capacity: 5 Raider Trophies" on consecutive lines. Spec §5's
worked example shows it once.
A bag definition carries no flavour text of its own, so the description is now
empty and the row omits the span entirely rather than emitting an empty one.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
ab8bbeae5d