List workspaces accessible to the authenticated user.
Filtering: Instance-level users (Sys Admin, Account Manager, Admin, DPO Admin) see ALL workspaces. Company-level users (Company Admin, Company DPO) see workspaces in their company. Regular users see only workspaces where they are members.
Member Visibility: only OWNER role sees members. EDITOR and VIEWER roles do not see members.
Results ordered by creation date (newest first).
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
A page number within the paginated result set.