The lobby-display and screensaver slide manager was admin-only. Add a shared
slides.manage permission so a curator can manage both surfaces without full
admin. Admins keep access via the require_permission admin bypass.
Backend:
- plugins/slides/api/routes.py: all 5 management routes require slides.manage
- plugins/slides/plugin.py: declare it via get_permissions(); nav item carries
the permission so the frontend can gate visibility
- shopdb/core/api/auth.py: login response now returns the user's permissions
(matches /me) so the frontend authStore has them on fresh login
Frontend:
- stores/auth.js: hasPermission(name) getter (admin true, else granted list)
- router/index.js: guard supports requiresPermission
- views/AppLayout.vue: hide nav items whose permission the user lacks
- plugins/slides/frontend/routes.js: slide manager gated requiresPermission
Tests: no-perm user 403, curator role with the perm 200 (+ login advertises
it), admin 200 via bypass.
Deploy: run `flask seed permissions` to create the row, then grant it to a
role in Settings > Users & Roles.
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