HomeGridItemData

Lightweight model describing each tile in the home grid: label, routePath, image, optional dark variant, requiresLogin gate, optional rolesAllowed filter and an isNewFeature badge flag.

1. Constructed inline in FirstPage._prestatireItems and _clientItems.
2. isAllowedFor(role) returns true when rolesAllowed is null or contains the given role.
3. HomeGridItem widget consumes the data to render image + label and to gate the tap handler.

• rolesAllowed=null is interpreted as 'any role' — not a 'no roles' sentinel.
• requiresLogin is checked client-side only; deep-linking to the route directly relies on the GoRouter redirect to bounce guests to /login.

• lib/src/features/shared/home/models/home_grid_item_model.dart:3 // HomeGridItemData

There's no equality override — the items lists are recreated on every build but they're const-ish enough that it doesn't cause widget churn.