Implement family dataspace onboarding

src/user_engine/adapters/local.py

@@ -15,6 +15,7 @@ from user_engine.domain import (
     AuthorizationRequest,
     Catalog,
     ExternalIdentity,
+    FamilyInvitation,
     Membership,
     OutboxEvent,
     ProfileScope,
@@ -44,6 +45,7 @@ class InMemoryUserEngineStore:
     applications: dict[str, Application] = field(default_factory=dict)
     bindings: dict[str, ApplicationBinding] = field(default_factory=dict)
     catalogs: dict[str, Catalog] = field(default_factory=dict)
+    family_invitations: dict[str, FamilyInvitation] = field(default_factory=dict)
     profile_values: dict[
         tuple[str, str, ProfileScope, str | None], ProfileValue
     ] = field(default_factory=dict)
@@ -82,6 +84,19 @@ class InMemoryUserEngineStore:
     def save_catalog(self, catalog: Catalog) -> None:
         self.catalogs[catalog.catalog_id] = catalog
 
+    def save_family_invitation(self, invitation: FamilyInvitation) -> None:
+        self.family_invitations[invitation.invitation_id] = invitation
+
+    def family_invitation(self, invitation_id: str) -> FamilyInvitation | None:
+        return self.family_invitations.get(invitation_id)
+
+    def family_invitations_for_user(self, user_id: str) -> tuple[FamilyInvitation, ...]:
+        return tuple(
+            invitation
+            for invitation in self.family_invitations.values()
+            if invitation.user_id == user_id
+        )
+
     def save_profile_value(self, value: ProfileValue) -> None:
         self.profile_values[
             (value.user_id, value.attribute_key, value.scope, value.scope_id)