# Domain model

`User` is an authenticated account. A `Workspace` is a community and `WorkspaceMember` assigns its ADMIN or MEMBER role. A user may be in multiple workspaces.

`MediaItem` is one external or manual work. Manual works use `MANUAL` plus an application-generated external identifier. A `Recommendation` is the one active personal recommendation for a media item in a workspace; its uniqueness is `(workspaceId, mediaItemId)`. `RecommendationStatus` is per user and recommendation, while reactions and comments reinforce the existing recommendation instead of duplicating it.

Provider/external ID identifies media globally. A work can appear in different workspaces. Soft deletion is available for recommendations and comments. Invitation tokens are stored hashed. Audit metadata is deliberately non-sensitive.

Status values are PENDING, INTERESTED, IN_PROGRESS, COMPLETED, DROPPED and NOT_INTERESTED. Strength values NORMAL, HIGH and MUST_EXPERIENCE express insistence, not quality. Ratings are optional and intended for completed works.