The merge brought in main's ReBAC→role-grants migration, which changed the
grant contract the Svelte sharing UI (branched before it) was written
against: GrantDto dropped `permission` and now carries an explicit `role`
(owner/editor/viewer/commenter/contributor), and the "admin" role was
renamed "owner". Left unchanged, the share UI derived roles from a
now-absent `permission` field and showed every member as "viewer".
- grants.ts: ShareRole is now viewer|editor|owner; Grant carries `role`
(not `permission`); `roleFromPermissions` → `displayRole`, which collapses
the unexposed commenter→viewer and contributor→editor.
- ShareDialog.svelte: read each subject's role directly (role-grants emits
one row per subject); role picker exposes Owner instead of Admin.
- shared/+page.svelte (My Shares): same owner rename; role badges run
through displayRole so server-only roles render sensibly.
Create/update already POST `role`, so only the read/display path and the
role literal needed fixing. npm run check, test:unit (36) and build pass.
Edouard Vanbelle