Implement typed effective identity relationships

README.md

@@ -20,6 +20,7 @@ vendor or protocol.
 - inbound synchronization from external identity-management systems
 - identity lifecycle import, update, disable, and reconciliation jobs
 - identity-to-organization-function assignment links inside GovOPlaN
+- typed business groups and effective-dated identity relationship links
 - bridge views that combine identity and organization facts, such as identity
   candidates for organization function assignments
 - mapping external identities, accounts, groups, organizational units,
@@ -73,6 +74,12 @@ assignment links:
 - `GET /api/v1/idm/organization-function-assignments`
 - `POST /api/v1/idm/organization-function-assignments`
 - `PATCH /api/v1/idm/organization-function-assignments/{assignment_id}`
+- `GET|POST /api/v1/idm/typed-groups`
+- `PATCH /api/v1/idm/typed-groups/{group_id}`
+- `GET|POST /api/v1/idm/relationships`
+- `PATCH /api/v1/idm/relationships/{relationship_id}`
+- `POST /api/v1/idm/relationships/{relationship_id}/revoke`
+- `GET /api/v1/idm/typed-groups/{group_id}/memberships`
 
 The candidate endpoint returns searchable identity/account candidates for IDM
 assignment forms. Assignment writes validate the identity/account link through
@@ -139,6 +146,10 @@ shared `govoplan.idm.expire_assignments` task also emits the corresponding
 `idm.function_assignment.expired.v1` event. IDM records the event marker in the
 same database transaction, making repeated sweeps idempotent.
 
+Typed group and relationship behavior, including effective-time resolution and
+the provider-neutral capability consumed by Distribution Lists, is documented
+in [Typed groups and effective-dated relationships](docs/TYPED_RELATIONSHIPS.md).
+
 ## First Milestone
 
 The first useful milestone is a read-only synchronization preview: