Seller dashboard threads (type="store") now fetch the store's inbox via
useGetStoreThreads(storeId) -> /threads/list/?store_id=; the profile threads page
(type="user") keeps the personal buyer inbox. Depends on the seller-team backend
(store-aware threads + store_id-by-username), so it ships on this branch, not main.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
