user-engine/src/user_engine/service.py

"""Headless application service for the isolated user-engine MVP."""

from __future__ import annotations

from dataclasses import dataclass, replace
from typing import Any, Mapping

from user_engine.adapters.local import InMemoryUserEngineStore
from user_engine.domain import (
    Account,
    AccountStatus,
    Actor,
    Application,
    ApplicationBinding,
    AttributeDefinition,
    AuditRecord,
    AuthorizationRequest,
    CanonEntityReference,
    CanonRelationshipReference,
    Catalog,
    CatalogLifecycle,
    ExternalIdentity,
    FamilyDataspaceRequest,
    FamilyInvitation,
    FamilyMemberSpec,
    FamilyRole,
    InvitationStatus,
    Membership,
    Mutability,
    OutboxEvent,
    ProfileScope,
    ProfileValue,
    ProjectionType,
    Sensitivity,
    TenantAccount,
    User,
    Visibility,
    new_id,
    utc_now,
)
from user_engine.errors import (
    AuthorizationDenied,
    ConflictError,
    NotFoundError,
    ValidationError,
)
from user_engine.ports import AuthorizationCheckPort, IdentityClaimsAdapter

REDACTED = "<redacted>"
PLATFORM_TENANT = "platform:root"
PLATFORM_OPERATOR_ROLE = "platform-operator"
TENANT_ADMIN_ROLE = "tenant-admin"


@dataclass(frozen=True)
class HealthReport:
    status: str
    schema_version: str | None


@dataclass(frozen=True)
class ReadinessReport:
    ready: bool
    checks: Mapping[str, bool]


@dataclass(frozen=True)
class UserSession:
    actor: Actor
    user: User
    account: Account
    identities: tuple[ExternalIdentity, ...]


@dataclass(frozen=True)
class TenantContext:
    tenant: str
    actor: Actor
    platform_operator: bool


@dataclass(frozen=True)
class EffectiveProfile:
    user_id: str
    application_id: str | None
    values: Mapping[str, Any]
    source_layers: Mapping[str, str]
    trace: Mapping[str, tuple[str, ...]]


@dataclass(frozen=True)
class Projection:
    user_id: str
    projection_type: ProjectionType
    application_id: str | None
    values: Mapping[str, Any]
    redactions: Mapping[str, str]


@dataclass(frozen=True)
class IdentityContext:
    actor: Actor
    user: User
    account: Account
    identities: tuple[ExternalIdentity, ...]
    tenant: str
    application_id: str | None
    memberships: tuple[Membership, ...]
    entity_refs: Mapping[str, CanonEntityReference]
    relationship_refs: tuple[CanonRelationshipReference, ...]
    grant_like_refs: tuple[CanonEntityReference, ...]
    evidence_refs: tuple[CanonEntityReference, ...]
    profile: EffectiveProfile | None = None
    gaps: tuple[str, ...] = ()


@dataclass(frozen=True)
class FamilyMemberInvitation:
    user: User
    tenant_account: TenantAccount
    membership: Membership
    invitation: FamilyInvitation


@dataclass(frozen=True)
class FamilyDataspaceOnboarding:
    tenant: str
    family_scope_id: str
    family_display_name: str
    owner_session: UserSession
    owner_membership: Membership
    application: Application
    binding: ApplicationBinding
    catalog: Catalog
    invitations: tuple[FamilyMemberInvitation, ...]
    identity_context: IdentityContext
    claims_projection: Projection


@dataclass(frozen=True)
class FamilyInvitationAcceptance:
    session: UserSession
    invitation: FamilyInvitation
    identity_context: IdentityContext
    claims_projection: Projection


@dataclass(frozen=True)
class TenantDiagnostics:
    tenant: str
    checks: Mapping[str, bool]
    issues: tuple[str, ...]
    memberships: tuple[Membership, ...]


@dataclass(frozen=True)
class OutboxDiagnostics:
    pending_count: int
    event_types: Mapping[str, int]
    oldest_correlation_id: str | None


@dataclass(frozen=True)
class OperabilitySnapshot:
    ready: bool
    checks: Mapping[str, bool]
    metrics: Mapping[str, int]
    issues: tuple[str, ...]


class UserEngineService:
    """Headless service API for isolated user and profile management."""

    def __init__(
        self,
        *,
        store: InMemoryUserEngineStore,
        identity_adapter: IdentityClaimsAdapter,
        authorization: AuthorizationCheckPort,
    ) -> None:
        self.store = store
        self.identity_adapter = identity_adapter
        self.authorization = authorization
        if not self.store.ready:
            self.store.migrate()

    def health(self) -> HealthReport:
        return HealthReport(status="ok", schema_version=self.store.schema_version)

    def readiness(self) -> ReadinessReport:
        return ReadinessReport(
            ready=self.store.ready,
            checks={
                "store_schema": self.store.ready,
                "identity_adapter": self.identity_adapter is not None,
                "authorization_port": self.authorization is not None,
            },
        )

    def resolve_tenant_context(
        self, actor: Actor, tenant: str | None = None
    ) -> TenantContext:
        resolved_tenant = tenant or actor.tenant
        if not resolved_tenant:
            raise ValidationError("tenant context is required")
        platform_operator = PLATFORM_OPERATOR_ROLE in actor.roles
        if resolved_tenant == PLATFORM_TENANT and not platform_operator:
            raise AuthorizationDenied("platform tenant requires platform operator role")
        if resolved_tenant != actor.tenant and not platform_operator:
            raise AuthorizationDenied("cross-tenant access denied")
        return TenantContext(
            tenant=resolved_tenant,
            actor=actor,
            platform_operator=platform_operator,
        )

    def me(
        self,
        claims: Mapping[str, Any],
        *,
        correlation_id: str | None = None,
    ) -> UserSession:
        actor = self.identity_adapter.normalize(claims)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="me.read",
            resource_type="user-engine:me",
            resource_id=actor.subject,
            tenant=actor.tenant,
            correlation_id=correlation_id,
        )
        identity = self.store.find_identity(*actor.identity_key)
        if identity is not None:
            user = self._require_user(identity.user_id)
            account = self._require_account(user.user_id)
            return self._session(actor, user, account)

        user = User(
            display_name=actor.preferred_username,
            primary_email=_optional_claim(actor, "email"),
        )
        account = Account(
            account_id=new_id("acct"),
            user_id=user.user_id,
            status=AccountStatus.ACTIVE,
        )
        tenant_account = TenantAccount(user_id=user.user_id, tenant=actor.tenant)
        identity = ExternalIdentity(
            identity_id=new_id("idn"),
            user_id=user.user_id,
            issuer=actor.issuer,
            subject=actor.subject,
            provider=actor.authorized_party,
        )
        self.store.save_user(user)
        self.store.save_account(account)
        self.store.save_tenant_account(tenant_account)
        self.store.save_identity(identity)
        self._record_mutation(
            actor,
            action="user.create_from_identity",
            subject=user.user_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="user.created",
            aggregate_id=user.user_id,
            payload={
                "user_id": user.user_id,
                "account_id": account.account_id,
                "identity": {"issuer": actor.issuer, "subject": actor.subject},
            },
        )
        return self._session(actor, user, account)

    def create_user(
        self,
        actor: Actor,
        *,
        display_name: str | None,
        primary_email: str | None,
        correlation_id: str | None = None,
    ) -> User:
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="user.create",
            resource_type="user-engine:user",
            resource_id="new",
            tenant=actor.tenant,
            correlation_id=correlation_id,
        )
        user = User(display_name=display_name, primary_email=primary_email)
        account = Account(account_id=new_id("acct"), user_id=user.user_id)
        tenant_account = TenantAccount(user_id=user.user_id, tenant=actor.tenant)
        self.store.save_user(user)
        self.store.save_account(account)
        self.store.save_tenant_account(tenant_account)
        self._record_mutation(
            actor,
            action="user.create",
            subject=user.user_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="user.created",
            aggregate_id=user.user_id,
            payload={"user_id": user.user_id, "account_id": account.account_id},
        )
        return user

    def set_account_status(
        self,
        actor: Actor,
        user_id: str,
        status: AccountStatus,
        *,
        correlation_id: str | None = None,
    ) -> Account:
        account = self._require_account(user_id)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="account.update",
            resource_type="user-engine:account",
            resource_id=account.account_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            target_user_id=user_id,
        )
        updated = replace(account, status=status)
        self.store.save_account(updated)
        self._record_mutation(
            actor,
            action="account.update",
            subject=user_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="account.status_changed",
            aggregate_id=account.account_id,
            payload={"user_id": user_id, "status": status},
        )
        return updated

    def set_tenant_account_status(
        self,
        actor: Actor,
        user_id: str,
        status: AccountStatus,
        *,
        tenant: str,
        correlation_id: str | None = None,
    ) -> TenantAccount:
        self._require_user(user_id)
        tenant_context = self.resolve_tenant_context(actor, tenant)
        correlation_id = correlation_id or new_id("corr")
        account = self.store.tenant_account(tenant_context.tenant, user_id)
        if account is None:
            account = TenantAccount(user_id=user_id, tenant=tenant_context.tenant)
        decision = self._authorize(
            actor,
            action="tenant.account.update",
            resource_type="user-engine:tenant-account",
            resource_id=f"{tenant_context.tenant}:{user_id}",
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            target_user_id=user_id,
        )
        updated = replace(account, status=status)
        self.store.save_tenant_account(updated)
        self._record_mutation(
            actor,
            action="tenant.account.update",
            subject=user_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="tenant_account.status_changed",
            aggregate_id=user_id,
            payload={
                "user_id": user_id,
                "tenant": tenant_context.tenant,
                "status": status,
            },
        )
        return updated

    def add_membership(
        self,
        actor: Actor,
        user_id: str,
        *,
        tenant: str,
        scope_type: str,
        scope_id: str,
        kind: str,
        correlation_id: str | None = None,
    ) -> Membership:
        self._require_user(user_id)
        tenant_context = self.resolve_tenant_context(actor, tenant)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="membership.write",
            resource_type="user-engine:membership",
            resource_id=f"{tenant_context.tenant}:{user_id}:{scope_type}:{scope_id}",
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            target_user_id=user_id,
            context={"scope_type": scope_type, "scope_id": scope_id, "kind": kind},
        )
        membership = Membership(
            membership_id=new_id("mem"),
            user_id=user_id,
            tenant=tenant_context.tenant,
            scope_type=scope_type,
            scope_id=scope_id,
            kind=kind,
            freshness_version=correlation_id,
        )
        self.store.save_membership(membership)
        self._record_mutation(
            actor,
            action="membership.write",
            subject=user_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="membership.added",
            aggregate_id=membership.membership_id,
            payload={
                "membership_id": membership.membership_id,
                "user_id": user_id,
                "tenant": tenant_context.tenant,
                "scope_type": scope_type,
                "scope_id": scope_id,
                "kind": kind,
            },
        )
        return membership

    def link_identity(
        self,
        actor: Actor,
        user_id: str,
        *,
        issuer: str,
        subject: str,
        provider: str | None = None,
        correlation_id: str | None = None,
    ) -> ExternalIdentity:
        self._require_user(user_id)
        existing = self.store.find_identity(issuer, subject)
        if existing is not None and existing.user_id != user_id:
            raise ConflictError("external identity is already linked")
        if existing is not None:
            return existing

        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="identity.link",
            resource_type="user-engine:identity",
            resource_id=f"{issuer}:{subject}",
            tenant=actor.tenant,
            correlation_id=correlation_id,
            target_user_id=user_id,
        )
        identity = ExternalIdentity(
            identity_id=new_id("idn"),
            user_id=user_id,
            issuer=issuer,
            subject=subject,
            provider=provider,
        )
        self.store.save_identity(identity)
        self._record_mutation(
            actor,
            action="identity.link",
            subject=user_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="identity.linked",
            aggregate_id=user_id,
            payload={"issuer": issuer, "subject": subject, "user_id": user_id},
        )
        return identity

    def register_application(
        self,
        actor: Actor,
        application: Application,
        *,
        binding: ApplicationBinding | None = None,
        correlation_id: str | None = None,
    ) -> Application:
        if application.application_id in self.store.applications:
            raise ConflictError("application already exists")
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="application.register",
            resource_type="user-engine:application",
            resource_id=application.application_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            application_id=application.application_id,
        )
        self.store.save_application(application)
        if binding is not None:
            if binding.application_id != application.application_id:
                raise ValidationError("binding application id must match application")
            self.store.save_binding(binding)
        self._record_mutation(
            actor,
            action="application.register",
            subject=application.application_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="application.registered",
            aggregate_id=application.application_id,
            payload={"application_id": application.application_id},
            application_id=application.application_id,
        )
        return application

    def publish_catalog(
        self,
        actor: Actor,
        catalog: Catalog,
        *,
        correlation_id: str | None = None,
    ) -> Catalog:
        self._validate_catalog(catalog)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="catalog.publish",
            resource_type="user-engine:catalog",
            resource_id=catalog.catalog_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            application_id=catalog.owning_application_id,
        )
        self.store.save_catalog(catalog)
        self._record_mutation(
            actor,
            action="catalog.publish",
            subject=catalog.catalog_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="catalog.published",
            aggregate_id=catalog.catalog_id,
            payload={
                "catalog_id": catalog.catalog_id,
                "namespace": catalog.namespace,
                "version": catalog.version,
            },
            application_id=catalog.owning_application_id,
        )
        return catalog

    def set_profile_value(
        self,
        actor: Actor,
        user_id: str,
        attribute_key: str,
        value: Any,
        *,
        scope: ProfileScope = ProfileScope.GLOBAL,
        scope_id: str | None = None,
        tenant: str | None = None,
        application_id: str | None = None,
        correlation_id: str | None = None,
    ) -> ProfileValue:
        self._require_user(user_id)
        definition = self._require_attribute(attribute_key)
        self._validate_profile_scope(definition, scope, scope_id)
        self._validate_value(definition, value)
        operation_tenant = self._operation_tenant(actor, tenant, scope, scope_id)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="profile.write",
            resource_type="user-engine:profile",
            resource_id=f"{user_id}:{attribute_key}",
            tenant=operation_tenant,
            correlation_id=correlation_id,
            application_id=application_id,
            target_user_id=user_id,
            context={"scope": scope, "scope_id": scope_id},
        )
        profile_value = ProfileValue(
            user_id=user_id,
            attribute_key=attribute_key,
            value=value,
            scope=scope,
            scope_id=scope_id,
            source=f"{actor.issuer}:{actor.subject}",
        )
        self.store.save_profile_value(profile_value)
        self._record_mutation(
            actor,
            action="profile.write",
            subject=user_id,
            tenant=operation_tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="profile.value_set",
            aggregate_id=user_id,
            payload={
                "user_id": user_id,
                "attribute_key": attribute_key,
                "scope": scope,
                "scope_id": scope_id,
            },
            application_id=application_id,
        )
        return profile_value

    def effective_profile(
        self,
        actor: Actor,
        user_id: str,
        *,
        application_id: str | None = None,
        tenant: str | None = None,
        correlation_id: str | None = None,
    ) -> EffectiveProfile:
        tenant_context = self.resolve_tenant_context(actor, tenant)
        correlation_id = correlation_id or new_id("corr")
        self._authorize(
            actor,
            action="profile.read",
            resource_type="user-engine:profile",
            resource_id=user_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=application_id,
            target_user_id=user_id,
        )
        return self._resolve_effective_profile(user_id, application_id, tenant_context.tenant)

    def projection(
        self,
        actor: Actor,
        user_id: str,
        projection_type: ProjectionType,
        *,
        application_id: str | None = None,
        tenant: str | None = None,
        correlation_id: str | None = None,
    ) -> Projection:
        if _is_application_projection(projection_type) and application_id is None:
            raise ValidationError("application projections require application_id")
        tenant_context = self.resolve_tenant_context(actor, tenant)
        correlation_id = correlation_id or new_id("corr")
        self._authorize(
            actor,
            action="projection.read",
            resource_type="user-engine:projection",
            resource_id=user_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=application_id,
            target_user_id=user_id,
            context={"projection_type": projection_type},
        )
        effective = self._resolve_effective_profile(
            user_id, application_id, tenant_context.tenant
        )
        owning_application_id = (
            application_id if _is_application_projection(projection_type) else None
        )
        values: dict[str, Any] = {}
        redactions: dict[str, str] = {}
        for key, definition in self._active_attribute_definitions(
            owning_application_id=owning_application_id
        ).items():
            if key not in effective.values:
                continue
            if not _visible_in_projection(definition, projection_type):
                continue
            if _must_redact(definition, projection_type):
                values[key] = REDACTED
                redactions[key] = "sensitivity"
            else:
                values[key] = effective.values[key]
        return Projection(
            user_id=user_id,
            projection_type=projection_type,
            application_id=application_id,
            values=values,
            redactions=redactions,
        )

    def identity_context(
        self,
        actor: Actor,
        *,
        user_id: str | None = None,
        tenant: str | None = None,
        application_id: str | None = None,
        include_profile: bool = False,
        correlation_id: str | None = None,
    ) -> IdentityContext:
        tenant_context = self.resolve_tenant_context(actor, tenant)
        identity = self.store.find_identity(*actor.identity_key)
        if user_id is None:
            if identity is None:
                raise NotFoundError("identity link not found")
            user_id = identity.user_id
        user = self._require_user(user_id)
        account = self._require_account(user_id)
        correlation_id = correlation_id or new_id("corr")
        self._authorize(
            actor,
            action="identity_context.read",
            resource_type="user-engine:identity-context",
            resource_id=user_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=application_id,
            target_user_id=user_id,
            context={"include_profile": include_profile},
        )
        identities = tuple(
            identity
            for identity in self.store.identities.values()
            if identity.user_id == user.user_id
        )
        memberships = self.store.memberships_for_user(
            user.user_id, tenant=tenant_context.tenant
        )
        evidence_refs = self._identity_evidence_refs(
            user,
            account,
            memberships,
            tenant_context.tenant,
        )
        entity_refs = self._identity_entity_refs(
            actor,
            user,
            account,
            identities,
            memberships,
            tenant_context.tenant,
            application_id,
        )
        relationship_refs, grant_like_refs = self._identity_relationship_refs(
            entity_refs,
            memberships,
            tenant_context.tenant,
            evidence_refs[0].identifier if evidence_refs else None,
        )
        profile = (
            self._resolve_effective_profile(
                user.user_id, application_id, tenant_context.tenant
            )
            if include_profile
            else None
        )
        gaps = () if evidence_refs else ("evidence:no-audit-records",)
        return IdentityContext(
            actor=actor,
            user=user,
            account=account,
            identities=identities,
            tenant=tenant_context.tenant,
            application_id=application_id,
            memberships=memberships,
            entity_refs=entity_refs,
            relationship_refs=relationship_refs,
            grant_like_refs=grant_like_refs,
            evidence_refs=evidence_refs,
            profile=profile,
            gaps=gaps,
        )

    def onboard_family_dataspace(
        self,
        actor: Actor,
        request: FamilyDataspaceRequest,
        *,
        correlation_id: str | None = None,
    ) -> FamilyDataspaceOnboarding:
        tenant_context = self.resolve_tenant_context(actor, request.tenant)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="family_dataspace.onboard",
            resource_type="user-engine:family-dataspace",
            resource_id=request.family_scope_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=request.application_id,
            context={"family_scope_id": request.family_scope_id},
        )
        owner_session = self._ensure_actor_session(actor, correlation_id)
        application, binding = self._ensure_family_dataspace_application(
            actor, request, correlation_id
        )
        catalog = self._ensure_family_dataspace_catalog(
            actor, request, correlation_id
        )
        owner_membership = self._ensure_membership(
            actor,
            owner_session.user.user_id,
            tenant=tenant_context.tenant,
            scope_type="family",
            scope_id=request.family_scope_id,
            kind=FamilyRole.OWNER.value,
            correlation_id=correlation_id,
        )
        owner_defaults = dict(request.owner_profile_defaults)
        owner_defaults.setdefault(
            "member_display_name",
            owner_session.user.display_name
            or actor.preferred_username
            or owner_session.user.primary_email
            or actor.subject,
        )
        self._apply_family_profile_defaults(
            actor,
            owner_session.user.user_id,
            tenant=tenant_context.tenant,
            application_id=request.application_id,
            catalog_namespace=request.catalog_namespace,
            values=owner_defaults,
            correlation_id=correlation_id,
        )
        invitations = tuple(
            self.invite_family_member(
                actor,
                tenant=tenant_context.tenant,
                family_scope_id=request.family_scope_id,
                application_id=request.application_id,
                catalog_namespace=request.catalog_namespace,
                member=member,
                correlation_id=correlation_id,
            )
            for member in request.member_specs
        )
        self._record_mutation(
            actor,
            action="family_dataspace.onboard",
            subject=request.family_scope_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="family_dataspace.onboarded",
            aggregate_id=request.family_scope_id,
            payload={
                "tenant": tenant_context.tenant,
                "family_scope_id": request.family_scope_id,
                "application_id": request.application_id,
                "member_invitation_count": len(invitations),
            },
            application_id=request.application_id,
        )
        identity_context = self.identity_context(
            actor,
            user_id=owner_session.user.user_id,
            tenant=tenant_context.tenant,
            application_id=request.application_id,
            include_profile=True,
            correlation_id=correlation_id,
        )
        claims_projection = self.projection(
            actor,
            owner_session.user.user_id,
            ProjectionType.CLAIMS_ENRICHMENT,
            tenant=tenant_context.tenant,
            application_id=request.application_id,
            correlation_id=correlation_id,
        )
        return FamilyDataspaceOnboarding(
            tenant=tenant_context.tenant,
            family_scope_id=request.family_scope_id,
            family_display_name=request.family_display_name,
            owner_session=owner_session,
            owner_membership=owner_membership,
            application=application,
            binding=binding,
            catalog=catalog,
            invitations=invitations,
            identity_context=identity_context,
            claims_projection=claims_projection,
        )

    def invite_family_member(
        self,
        actor: Actor,
        *,
        tenant: str,
        family_scope_id: str,
        application_id: str,
        member: FamilyMemberSpec,
        catalog_namespace: str = "dataspace",
        correlation_id: str | None = None,
    ) -> FamilyMemberInvitation:
        tenant_context = self.resolve_tenant_context(actor, tenant)
        correlation_id = correlation_id or new_id("corr")
        role = _family_role_value(member.role)
        if not member.primary_email:
            raise ValidationError("family member primary_email is required")
        if member.issuer and member.subject:
            existing = self.store.find_identity(member.issuer, member.subject)
            if existing is not None:
                raise ConflictError("external identity is already linked")
        decision = self._authorize(
            actor,
            action="family_member.invite",
            resource_type="user-engine:family-invitation",
            resource_id=member.primary_email,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=application_id,
            context={
                "family_scope_id": family_scope_id,
                "role": role,
            },
        )
        user = self.create_user(
            actor,
            display_name=member.display_name,
            primary_email=member.primary_email,
            correlation_id=correlation_id,
        )
        tenant_account = self.set_tenant_account_status(
            actor,
            user.user_id,
            AccountStatus.INVITED,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
        )
        membership = self._ensure_membership(
            actor,
            user.user_id,
            tenant=tenant_context.tenant,
            scope_type="family",
            scope_id=family_scope_id,
            kind=role,
            correlation_id=correlation_id,
        )
        profile_defaults = dict(member.profile_defaults)
        if member.display_name:
            profile_defaults.setdefault("member_display_name", member.display_name)
        self._apply_family_profile_defaults(
            actor,
            user.user_id,
            tenant=tenant_context.tenant,
            application_id=application_id,
            catalog_namespace=catalog_namespace,
            values=profile_defaults,
            correlation_id=correlation_id,
        )
        if member.issuer and member.subject:
            self.link_identity(
                actor,
                user.user_id,
                issuer=member.issuer,
                subject=member.subject,
                provider=member.provider,
                correlation_id=correlation_id,
            )
        invitation = FamilyInvitation(
            invitation_id=new_id("inv"),
            tenant=tenant_context.tenant,
            family_scope_id=family_scope_id,
            application_id=application_id,
            user_id=user.user_id,
            primary_email=member.primary_email,
            role=role,
            invited_by=actor.subject,
            correlation_id=correlation_id,
            last_sent_correlation_id=correlation_id,
        )
        self.store.save_family_invitation(invitation)
        self._record_mutation(
            actor,
            action="family_member.invite",
            subject=invitation.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="family_member.invited",
            aggregate_id=invitation.invitation_id,
            payload={
                "invitation_id": invitation.invitation_id,
                "user_id": user.user_id,
                "tenant": tenant_context.tenant,
                "family_scope_id": family_scope_id,
                "application_id": application_id,
                "role": role,
            },
            application_id=application_id,
        )
        return FamilyMemberInvitation(
            user=user,
            tenant_account=tenant_account,
            membership=membership,
            invitation=invitation,
        )

    def resend_family_invitation(
        self,
        actor: Actor,
        invitation_id: str,
        *,
        correlation_id: str | None = None,
    ) -> FamilyInvitation:
        invitation = self._require_family_invitation(invitation_id)
        if invitation.status != InvitationStatus.PENDING:
            raise ValidationError("only pending invitations can be resent")
        tenant_context = self.resolve_tenant_context(actor, invitation.tenant)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="family_invitation.resend",
            resource_type="user-engine:family-invitation",
            resource_id=invitation.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=invitation.application_id,
            target_user_id=invitation.user_id,
        )
        updated = replace(
            invitation,
            resend_count=invitation.resend_count + 1,
            last_sent_correlation_id=correlation_id,
            updated_at=utc_now(),
        )
        self.store.save_family_invitation(updated)
        self._record_mutation(
            actor,
            action="family_invitation.resend",
            subject=updated.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="family_invitation.resent",
            aggregate_id=updated.invitation_id,
            payload={
                "invitation_id": updated.invitation_id,
                "user_id": updated.user_id,
                "resend_count": updated.resend_count,
            },
            application_id=updated.application_id,
        )
        return updated

    def revoke_family_invitation(
        self,
        actor: Actor,
        invitation_id: str,
        *,
        correlation_id: str | None = None,
    ) -> FamilyInvitation:
        invitation = self._require_family_invitation(invitation_id)
        if invitation.status != InvitationStatus.PENDING:
            raise ValidationError("only pending invitations can be revoked")
        tenant_context = self.resolve_tenant_context(actor, invitation.tenant)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="family_invitation.revoke",
            resource_type="user-engine:family-invitation",
            resource_id=invitation.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=invitation.application_id,
            target_user_id=invitation.user_id,
        )
        self.set_tenant_account_status(
            actor,
            invitation.user_id,
            AccountStatus.DISABLED,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
        )
        updated = replace(
            invitation,
            status=InvitationStatus.REVOKED,
            updated_at=utc_now(),
            revoked_at=utc_now(),
        )
        self.store.save_family_invitation(updated)
        self._record_mutation(
            actor,
            action="family_invitation.revoke",
            subject=updated.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="family_invitation.revoked",
            aggregate_id=updated.invitation_id,
            payload={
                "invitation_id": updated.invitation_id,
                "user_id": updated.user_id,
                "status": updated.status,
            },
            application_id=updated.application_id,
        )
        return updated

    def accept_family_invitation(
        self,
        claims: Mapping[str, Any],
        invitation_id: str,
        *,
        correlation_id: str | None = None,
    ) -> FamilyInvitationAcceptance:
        invitation = self._require_family_invitation(invitation_id)
        if invitation.status == InvitationStatus.REVOKED:
            raise ValidationError("revoked invitations cannot be accepted")
        if invitation.status == InvitationStatus.ACCEPTED:
            raise ValidationError("invitation is already accepted")
        actor = self.identity_adapter.normalize(claims)
        tenant_context = self.resolve_tenant_context(actor, invitation.tenant)
        correlation_id = correlation_id or new_id("corr")
        decision = self._authorize(
            actor,
            action="family_invitation.accept",
            resource_type="user-engine:family-invitation",
            resource_id=invitation.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            application_id=invitation.application_id,
            target_user_id=invitation.user_id,
            context={"family_scope_id": invitation.family_scope_id},
        )
        self.link_identity(
            actor,
            invitation.user_id,
            issuer=actor.issuer,
            subject=actor.subject,
            provider=actor.authorized_party,
            correlation_id=correlation_id,
        )
        account = self.set_account_status(
            actor,
            invitation.user_id,
            AccountStatus.ACTIVE,
            correlation_id=correlation_id,
        )
        self.set_tenant_account_status(
            actor,
            invitation.user_id,
            AccountStatus.ACTIVE,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
        )
        accepted_at = utc_now()
        accepted = replace(
            invitation,
            status=InvitationStatus.ACCEPTED,
            updated_at=accepted_at,
            accepted_at=accepted_at,
        )
        self.store.save_family_invitation(accepted)
        self._record_mutation(
            actor,
            action="family_invitation.accept",
            subject=accepted.invitation_id,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="family_invitation.accepted",
            aggregate_id=accepted.invitation_id,
            payload={
                "invitation_id": accepted.invitation_id,
                "user_id": accepted.user_id,
                "tenant": accepted.tenant,
                "family_scope_id": accepted.family_scope_id,
                "application_id": accepted.application_id,
                "status": accepted.status,
            },
            application_id=accepted.application_id,
        )
        session = self._session(actor, self._require_user(accepted.user_id), account)
        identity_context = self.identity_context(
            actor,
            user_id=accepted.user_id,
            tenant=tenant_context.tenant,
            application_id=accepted.application_id,
            include_profile=True,
            correlation_id=correlation_id,
        )
        claims_projection = self.projection(
            actor,
            accepted.user_id,
            ProjectionType.CLAIMS_ENRICHMENT,
            tenant=tenant_context.tenant,
            application_id=accepted.application_id,
            correlation_id=correlation_id,
        )
        return FamilyInvitationAcceptance(
            session=session,
            invitation=accepted,
            identity_context=identity_context,
            claims_projection=claims_projection,
        )

    def tenant_diagnostics(
        self,
        actor: Actor,
        *,
        tenant: str,
        correlation_id: str | None = None,
    ) -> TenantDiagnostics:
        tenant_context = self.resolve_tenant_context(actor, tenant)
        correlation_id = correlation_id or new_id("corr")
        self._authorize(
            actor,
            action="tenant.diagnostics.read",
            resource_type="user-engine:tenant",
            resource_id=tenant_context.tenant,
            tenant=tenant_context.tenant,
            correlation_id=correlation_id,
        )
        memberships = self.store.memberships_for_tenant(tenant_context.tenant)
        checks = {
            "store_schema": self.store.ready,
            "authorization_port": self.authorization is not None,
            "membership_facts": bool(memberships),
            "catalog_scopes": bool(self._active_attribute_definitions()),
            "audit_ready": self.store.ready,
        }
        issues = tuple(key for key, passed in checks.items() if not passed)
        return TenantDiagnostics(
            tenant=tenant_context.tenant,
            checks=checks,
            issues=issues,
            memberships=memberships,
        )

    def audit_records(self) -> tuple[AuditRecord, ...]:
        return tuple(self.store.audit_records)

    def outbox_events(self) -> tuple[OutboxEvent, ...]:
        return tuple(self.store.outbox_events)

    def outbox_diagnostics(self) -> OutboxDiagnostics:
        event_types: dict[str, int] = {}
        for event in self.store.outbox_events:
            event_types[event.event_type] = event_types.get(event.event_type, 0) + 1
        oldest = self.store.outbox_events[0].correlation_id if self.store.outbox_events else None
        return OutboxDiagnostics(
            pending_count=len(self.store.outbox_events),
            event_types=event_types,
            oldest_correlation_id=oldest,
        )

    def operability_snapshot(self) -> OperabilitySnapshot:
        audit_correlation_ok = all(
            bool(record.correlation_id) for record in self.store.audit_records
        )
        checks = {
            "ready": self.readiness().ready,
            "audit_correlation": audit_correlation_ok,
            "outbox_diagnostics": self.outbox_diagnostics().pending_count >= 0,
        }
        metrics = {
            "users": len(self.store.users),
            "accounts": len(self.store.accounts),
            "tenant_accounts": len(self.store.tenant_accounts),
            "memberships": len(self.store.memberships),
            "applications": len(self.store.applications),
            "catalogs": len(self.store.catalogs),
            "family_invitations": len(self.store.family_invitations),
            "profile_values": len(self.store.profile_values),
            "audit_records": len(self.store.audit_records),
            "pending_outbox_events": len(self.store.outbox_events),
        }
        issues = tuple(key for key, passed in checks.items() if not passed)
        return OperabilitySnapshot(
            ready=all(checks.values()),
            checks=checks,
            metrics=metrics,
            issues=issues,
        )

    def structured_log_context(
        self,
        *,
        correlation_id: str,
        tenant: str,
        actor: Actor | None = None,
    ) -> Mapping[str, str]:
        context = {
            "correlation_id": correlation_id,
            "tenant": tenant,
        }
        if actor is not None:
            context["actor_issuer"] = actor.issuer
            context["actor_subject"] = actor.subject
        return context

    def _ensure_actor_session(
        self, actor: Actor, correlation_id: str
    ) -> UserSession:
        identity = self.store.find_identity(*actor.identity_key)
        if identity is not None:
            user = self._require_user(identity.user_id)
            account = self._require_account(user.user_id)
            return self._session(actor, user, account)

        decision = self._authorize(
            actor,
            action="me.read",
            resource_type="user-engine:me",
            resource_id=actor.subject,
            tenant=actor.tenant,
            correlation_id=correlation_id,
        )
        user = User(
            display_name=actor.preferred_username,
            primary_email=_optional_claim(actor, "email"),
        )
        account = Account(
            account_id=new_id("acct"),
            user_id=user.user_id,
            status=AccountStatus.ACTIVE,
        )
        tenant_account = TenantAccount(user_id=user.user_id, tenant=actor.tenant)
        external_identity = ExternalIdentity(
            identity_id=new_id("idn"),
            user_id=user.user_id,
            issuer=actor.issuer,
            subject=actor.subject,
            provider=actor.authorized_party,
        )
        self.store.save_user(user)
        self.store.save_account(account)
        self.store.save_tenant_account(tenant_account)
        self.store.save_identity(external_identity)
        self._record_mutation(
            actor,
            action="user.create_from_identity",
            subject=user.user_id,
            tenant=actor.tenant,
            correlation_id=correlation_id,
            decision_id=decision.decision_id,
            event_type="user.created",
            aggregate_id=user.user_id,
            payload={
                "user_id": user.user_id,
                "account_id": account.account_id,
                "identity": {"issuer": actor.issuer, "subject": actor.subject},
            },
        )
        return self._session(actor, user, account)

    def _ensure_family_dataspace_application(
        self,
        actor: Actor,
        request: FamilyDataspaceRequest,
        correlation_id: str,
    ) -> tuple[Application, ApplicationBinding]:
        binding = _family_dataspace_binding(request)
        application = self.store.applications.get(request.application_id)
        if application is not None:
            if request.application_id not in self.store.bindings:
                decision = self._authorize(
                    actor,
                    action="application.bind",
                    resource_type="user-engine:application",
                    resource_id=request.application_id,
                    tenant=request.tenant,
                    correlation_id=correlation_id,
                    application_id=request.application_id,
                )
                self.store.save_binding(binding)
                self._record_mutation(
                    actor,
                    action="application.bind",
                    subject=request.application_id,
                    tenant=request.tenant,
                    correlation_id=correlation_id,
                    decision_id=decision.decision_id,
                    event_type="application.bound",
                    aggregate_id=request.application_id,
                    payload={
                        "application_id": request.application_id,
                        "catalog_namespaces": binding.catalog_namespaces,
                    },
                    application_id=request.application_id,
                )
            return application, self.store.bindings[request.application_id]

        application = Application(
            application_id=request.application_id,
            display_name=request.application_display_name,
            owner=request.family_scope_id,
            allowed_profile_scopes=(
                ProfileScope.GLOBAL,
                ProfileScope.TENANT,
                ProfileScope.APPLICATION,
                ProfileScope.MEMBERSHIP,
            ),
            allowed_projection_types=(
                ProjectionType.APPLICATION_RUNTIME,
                ProjectionType.CLAIMS_ENRICHMENT,
            ),
        )
        return (
            self.register_application(
                actor,
                application,
                binding=binding,
                correlation_id=correlation_id,
            ),
            binding,
        )

    def _ensure_family_dataspace_catalog(
        self,
        actor: Actor,
        request: FamilyDataspaceRequest,
        correlation_id: str,
    ) -> Catalog:
        catalog_id = f"{request.application_id}.profile"
        existing = self.store.catalogs.get(catalog_id)
        if existing is not None:
            return existing

        catalog = Catalog(
            catalog_id=catalog_id,
            namespace=request.catalog_namespace,
            version="0.1.0",
            owning_application_id=request.application_id,
            lifecycle=CatalogLifecycle.ACTIVE,
            attributes=(
                AttributeDefinition(
                    key=f"{request.catalog_namespace}.family_display_name",
                    value_type="string",
                    scope=ProfileScope.TENANT,
                    sensitivity=Sensitivity.PERSONAL,
                    visibility=(
                        Visibility.USER,
                        Visibility.ADMIN,
                        Visibility.APPLICATION,
                    ),
                    mutability=(Mutability.ADMIN,),
                    default=request.family_display_name,
                ),
                AttributeDefinition(
                    key=f"{request.catalog_namespace}.member_display_name",
                    value_type="string",
                    scope=ProfileScope.APPLICATION,
                    sensitivity=Sensitivity.PERSONAL,
                    visibility=(
                        Visibility.USER,
                        Visibility.ADMIN,
                        Visibility.APPLICATION,
                    ),
                    mutability=(Mutability.USER, Mutability.ADMIN),
                ),
                AttributeDefinition(
                    key=f"{request.catalog_namespace}.home_view",
                    value_type="string",
                    scope=ProfileScope.APPLICATION,
                    sensitivity=Sensitivity.INTERNAL,
                    visibility=(Visibility.USER, Visibility.APPLICATION),
                    mutability=(Mutability.USER,),
                    default="family",
                    validation={"enum": ["family", "personal"]},
                ),
            ),
        )
        return self.publish_catalog(
            actor,
            catalog,
            correlation_id=correlation_id,
        )

    def _ensure_membership(
        self,
        actor: Actor,
        user_id: str,
        *,
        tenant: str,
        scope_type: str,
        scope_id: str,
        kind: str,
        correlation_id: str,
    ) -> Membership:
        for membership in self.store.memberships_for_user(user_id, tenant=tenant):
            if (
                membership.scope_type == scope_type
                and membership.scope_id == scope_id
                and membership.kind == kind
            ):
                return membership
        return self.add_membership(
            actor,
            user_id,
            tenant=tenant,
            scope_type=scope_type,
            scope_id=scope_id,
            kind=kind,
            correlation_id=correlation_id,
        )

    def _apply_family_profile_defaults(
        self,
        actor: Actor,
        user_id: str,
        *,
        tenant: str,
        application_id: str,
        catalog_namespace: str,
        values: Mapping[str, Any],
        correlation_id: str,
    ) -> None:
        for key, value in values.items():
            self.set_profile_value(
                actor,
                user_id,
                _family_profile_key(catalog_namespace, key),
                value,
                scope=ProfileScope.APPLICATION,
                scope_id=application_id,
                tenant=tenant,
                application_id=application_id,
                correlation_id=correlation_id,
            )

    def _require_family_invitation(self, invitation_id: str) -> FamilyInvitation:
        invitation = self.store.family_invitation(invitation_id)
        if invitation is None:
            raise NotFoundError("family invitation not found")
        return invitation

    def _identity_entity_refs(
        self,
        actor: Actor,
        user: User,
        account: Account,
        identities: tuple[ExternalIdentity, ...],
        memberships: tuple[Membership, ...],
        tenant: str,
        application_id: str | None,
    ) -> Mapping[str, CanonEntityReference]:
        actor_identifier = f"{actor.issuer}:{actor.subject}"
        refs: dict[str, CanonEntityReference] = {
            "actor": CanonEntityReference(
                concept="Actor",
                identifier=actor_identifier,
                scope=actor.tenant,
                source_system=actor.issuer,
                local_type=actor.principal_type.value,
            ),
            "user": CanonEntityReference(
                concept="User",
                identifier=user.user_id,
                scope=tenant,
                local_type="user-engine-user-record",
            ),
            "account": CanonEntityReference(
                concept="Account",
                identifier=account.account_id,
                scope=tenant,
                local_type=account.status.value,
            ),
            "authenticated_subject": CanonEntityReference(
                concept="Authenticated Subject",
                identifier=actor_identifier,
                scope=actor.tenant,
                source_system=actor.issuer,
                local_type="issuer-subject",
            ),
            "authorization_principal": CanonEntityReference(
                concept="Authorization Principal",
                identifier=f"{tenant}:{actor_identifier}",
                scope=tenant,
                local_type=actor.principal_type.value,
            ),
            "tenant": CanonEntityReference(
                concept="Tenant",
                identifier=tenant,
                scope=tenant,
                local_type="isolation-scope",
            ),
        }
        if application_id is not None:
            refs["application_scope"] = CanonEntityReference(
                concept="Scope",
                identifier=application_id,
                scope=tenant,
                local_type="application",
            )
        for identity in identities:
            refs[f"identity_record:{identity.identity_id}"] = CanonEntityReference(
                concept="Identity Record",
                identifier=identity.identity_id,
                scope=identity.issuer,
                source_system=identity.issuer,
                local_type=identity.provider,
            )
            refs[f"identifier:{identity.identity_id}"] = CanonEntityReference(
                concept="Scoped Identifier",
                identifier=f"{identity.issuer}:{identity.subject}",
                scope=identity.issuer,
                source_system=identity.issuer,
                local_type="issuer-subject",
            )
        for membership in memberships:
            scope_key = f"{membership.scope_type}:{membership.scope_id}"
            refs.setdefault(
                scope_key,
                CanonEntityReference(
                    concept=_scope_concept(membership.scope_type),
                    identifier=membership.scope_id,
                    scope=tenant,
                    local_type=membership.scope_type,
                ),
            )
            refs[f"membership:{membership.membership_id}"] = CanonEntityReference(
                concept="Membership Relationship",
                identifier=membership.membership_id,
                scope=tenant,
                local_type=membership.kind,
            )
            refs[f"role:{membership.membership_id}"] = CanonEntityReference(
                concept="Role",
                identifier=f"{membership.scope_id}:{membership.kind}",
                scope=membership.scope_id,
                local_type=membership.kind,
            )
        return refs

    def _identity_relationship_refs(
        self,
        entity_refs: Mapping[str, CanonEntityReference],
        memberships: tuple[Membership, ...],
        tenant: str,
        evidence_id: str | None,
    ) -> tuple[tuple[CanonRelationshipReference, ...], tuple[CanonEntityReference, ...]]:
        account_ref = entity_refs["account"]
        subject_ref = entity_refs["authenticated_subject"]
        principal_ref = entity_refs["authorization_principal"]
        user_ref = entity_refs["user"]
        tenant_ref = entity_refs["tenant"]
        relationships = [
            CanonRelationshipReference(
                relationship_type="belongs_to_tenant",
                source=user_ref,
                target=tenant_ref,
                scope=tenant,
                evidence_id=evidence_id,
            ),
            CanonRelationshipReference(
                relationship_type="authenticates_as",
                source=account_ref,
                target=subject_ref,
                scope=tenant,
                evidence_id=evidence_id,
            ),
            CanonRelationshipReference(
                relationship_type="evaluated_as",
                source=subject_ref,
                target=principal_ref,
                scope=tenant,
                evidence_id=evidence_id,
            ),
        ]
        grant_like_refs: list[CanonEntityReference] = []
        for key, ref in entity_refs.items():
            if key.startswith("identity_record:"):
                relationships.append(
                    CanonRelationshipReference(
                        relationship_type="identity_link",
                        source=ref,
                        target=user_ref,
                        scope=ref.scope,
                        evidence_id=evidence_id,
                    )
                )
        for membership in memberships:
            membership_ref = entity_refs[f"membership:{membership.membership_id}"]
            role_ref = entity_refs[f"role:{membership.membership_id}"]
            scope_ref = entity_refs[f"{membership.scope_type}:{membership.scope_id}"]
            grant_ref = CanonEntityReference(
                concept="Access Grant",
                identifier=membership.membership_id,
                scope=tenant,
                local_type=membership.kind,
                evidence_id=evidence_id,
            )
            grant_like_refs.append(grant_ref)
            relationships.extend(
                (
                    CanonRelationshipReference(
                        relationship_type="member_of",
                        source=user_ref,
                        target=scope_ref,
                        scope=tenant,
                        evidence_id=evidence_id,
                    ),
                    CanonRelationshipReference(
                        relationship_type="role_label",
                        source=membership_ref,
                        target=role_ref,
                        scope=tenant,
                        evidence_id=evidence_id,
                    ),
                    CanonRelationshipReference(
                        relationship_type="scoped_to",
                        source=grant_ref,
                        target=tenant_ref,
                        scope=tenant,
                        evidence_id=evidence_id,
                    ),
                )
            )
        return tuple(relationships), tuple(grant_like_refs)

    def _identity_evidence_refs(
        self,
        user: User,
        account: Account,
        memberships: tuple[Membership, ...],
        tenant: str,
    ) -> tuple[CanonEntityReference, ...]:
        membership_ids = {membership.membership_id for membership in memberships}
        subjects = {user.user_id, account.account_id, *membership_ids}
        evidence = []
        for record in self.store.audit_records:
            if record.tenant != tenant:
                continue
            if record.subject not in subjects and record.summary != "membership.added":
                continue
            evidence.append(
                CanonEntityReference(
                    concept="Evidence Source",
                    identifier=record.audit_id,
                    scope=tenant,
                    source_system="user-engine:audit",
                    local_type=record.summary or record.action,
                )
            )
        return tuple(evidence)

    def _session(self, actor: Actor, user: User, account: Account) -> UserSession:
        identities = tuple(
            identity
            for identity in self.store.identities.values()
            if identity.user_id == user.user_id
        )
        return UserSession(actor=actor, user=user, account=account, identities=identities)

    def _authorize(
        self,
        actor: Actor,
        *,
        action: str,
        resource_type: str,
        resource_id: str,
        tenant: str,
        correlation_id: str,
        application_id: str | None = None,
        target_user_id: str | None = None,
        context: Mapping[str, Any] | None = None,
    ):
        request = AuthorizationRequest(
            actor=actor,
            resource_type=resource_type,
            resource_id=resource_id,
            action=action,
            tenant=tenant,
            correlation_id=correlation_id,
            application_id=application_id,
            target_user_id=target_user_id,
            context=self._authorization_context(
                actor,
                target_user_id=target_user_id,
                context=context,
                tenant=tenant,
            ),
        )
        decision = self.authorization.check(request)
        if not decision.allowed:
            self.store.append_audit(
                AuditRecord(
                    audit_id=new_id("aud"),
                    actor=actor,
                    action=action,
                    subject=resource_id,
                    tenant=tenant,
                    correlation_id=correlation_id,
                    decision_id=decision.decision_id,
                    application_id=application_id,
                    summary="authorization denied",
                )
            )
            raise AuthorizationDenied(decision.reason or "authorization denied")
        return decision

    def _record_mutation(
        self,
        actor: Actor,
        *,
        action: str,
        subject: str,
        tenant: str,
        correlation_id: str,
        decision_id: str | None,
        event_type: str,
        aggregate_id: str,
        payload: Mapping[str, Any],
        application_id: str | None = None,
    ) -> None:
        self.store.append_audit(
            AuditRecord(
                audit_id=new_id("aud"),
                actor=actor,
                action=action,
                subject=subject,
                tenant=tenant,
                correlation_id=correlation_id,
                decision_id=decision_id,
                application_id=application_id,
                summary=event_type,
            )
        )
        self.store.append_outbox(
            OutboxEvent(
                event_id=new_id("evt"),
                event_type=event_type,
                aggregate_id=aggregate_id,
                payload=dict(payload),
                tenant=tenant,
                correlation_id=correlation_id,
            )
        )

    def _resolve_effective_profile(
        self, user_id: str, application_id: str | None, tenant: str | None
    ) -> EffectiveProfile:
        self._require_user(user_id)
        values: dict[str, Any] = {}
        source_layers: dict[str, str] = {}
        trace: dict[str, list[str]] = {}
        definitions = self._active_attribute_definitions()
        for key, definition in definitions.items():
            if definition.default is not None:
                values[key] = definition.default
                source_layers[key] = "catalog_default"
                trace[key] = ["catalog_default"]

        profile_values = self.store.values_for_user(user_id)
        for profile_value in profile_values:
            if profile_value.attribute_key not in definitions:
                continue
            if profile_value.scope != ProfileScope.GLOBAL:
                continue
            values[profile_value.attribute_key] = profile_value.value
            source_layers[profile_value.attribute_key] = "global"
            trace.setdefault(profile_value.attribute_key, []).append("global")

        for profile_value in profile_values:
            if profile_value.attribute_key not in definitions:
                continue
            if profile_value.scope != ProfileScope.TENANT:
                continue
            if profile_value.scope_id != tenant:
                continue
            values[profile_value.attribute_key] = profile_value.value
            layer = f"tenant:{tenant}"
            source_layers[profile_value.attribute_key] = layer
            trace.setdefault(profile_value.attribute_key, []).append(layer)

        for profile_value in profile_values:
            if profile_value.attribute_key not in definitions:
                continue
            if profile_value.scope != ProfileScope.APPLICATION:
                continue
            if profile_value.scope_id != application_id:
                continue
            values[profile_value.attribute_key] = profile_value.value
            layer = f"application:{application_id}"
            source_layers[profile_value.attribute_key] = layer
            trace.setdefault(profile_value.attribute_key, []).append(layer)

        return EffectiveProfile(
            user_id=user_id,
            application_id=application_id,
            values=values,
            source_layers=source_layers,
            trace={key: tuple(layers) for key, layers in trace.items()},
        )

    def _authorization_context(
        self,
        actor: Actor,
        *,
        target_user_id: str | None,
        context: Mapping[str, Any] | None,
        tenant: str,
    ) -> Mapping[str, Any]:
        facts: dict[str, Any] = {
            "actor_roles": actor.roles,
            "actor_scopes": actor.scopes,
            "assurance": dict(actor.assurance),
        }
        if target_user_id is not None:
            memberships = self.store.memberships_for_user(target_user_id, tenant=tenant)
            facts["target_memberships"] = tuple(
                {
                    "membership_id": membership.membership_id,
                    "scope_type": membership.scope_type,
                    "scope_id": membership.scope_id,
                    "kind": membership.kind,
                    "freshness_version": membership.freshness_version,
                }
                for membership in memberships
            )
        if context:
            facts.update(context)
        return facts

    def _operation_tenant(
        self,
        actor: Actor,
        tenant: str | None,
        scope: ProfileScope,
        scope_id: str | None,
    ) -> str:
        if scope == ProfileScope.TENANT:
            return self.resolve_tenant_context(actor, scope_id).tenant
        return self.resolve_tenant_context(actor, tenant).tenant

    def _validate_catalog(self, catalog: Catalog) -> None:
        if catalog.owning_application_id not in self.store.applications:
            raise ValidationError("catalog owning application is not registered")
        if catalog.lifecycle != CatalogLifecycle.ACTIVE:
            raise ValidationError("only active catalogs can be published")
        if not catalog.attributes:
            raise ValidationError("catalog must define at least one attribute")
        keys = [attribute.key for attribute in catalog.attributes]
        if len(keys) != len(set(keys)):
            raise ValidationError("catalog attribute keys must be unique")
        binding = self.store.bindings.get(catalog.owning_application_id)
        if binding and catalog.namespace not in binding.catalog_namespaces:
            raise ValidationError("catalog namespace is not bound to application")

        existing_catalog = self.store.catalogs.get(catalog.catalog_id)
        if existing_catalog is not None:
            self._validate_catalog_update(existing_catalog, catalog)

        active_definitions = self._active_attribute_definitions(
            excluding_catalog_id=catalog.catalog_id
        )
        active_catalogs = (
            existing
            for existing in self.store.catalogs.values()
            if existing.catalog_id != catalog.catalog_id
            and existing.lifecycle == CatalogLifecycle.ACTIVE
        )
        for existing in active_catalogs:
            if (
                existing.namespace == catalog.namespace
                and existing.owning_application_id != catalog.owning_application_id
            ):
                raise ConflictError("active catalog namespace is already owned")

        for attribute in catalog.attributes:
            if not attribute.key.startswith(f"{catalog.namespace}."):
                raise ValidationError("attribute keys must use the catalog namespace")
            if attribute.key in active_definitions:
                raise ConflictError("active catalog already owns attribute key")
            if not attribute.visibility:
                raise ValidationError("attribute must declare visibility")
            if not attribute.mutability:
                raise ValidationError("attribute must declare mutability")
            if Mutability.READ_ONLY in attribute.mutability and len(attribute.mutability) > 1:
                raise ValidationError("read-only mutability cannot be combined")
            if attribute.default is not None:
                self._validate_value(attribute, attribute.default)

    def _validate_catalog_update(self, previous: Catalog, catalog: Catalog) -> None:
        if previous.namespace != catalog.namespace:
            raise ValidationError("catalog namespace cannot change")
        if previous.owning_application_id != catalog.owning_application_id:
            raise ValidationError("catalog owner cannot change")
        if _version_tuple(catalog.version) < _version_tuple(previous.version):
            raise ValidationError("catalog version cannot move backwards")

        previous_attributes = {
            attribute.key: attribute for attribute in previous.attributes
        }
        for attribute in catalog.attributes:
            previous_attribute = previous_attributes.get(attribute.key)
            if previous_attribute is None:
                continue
            if _sensitivity_rank(attribute.sensitivity) < _sensitivity_rank(
                previous_attribute.sensitivity
            ):
                raise ValidationError("catalog update cannot downgrade sensitivity")

    def _validate_profile_scope(
        self,
        definition: AttributeDefinition,
        scope: ProfileScope,
        scope_id: str | None,
    ) -> None:
        allowed_scopes = {
            ProfileScope.GLOBAL,
            ProfileScope.TENANT,
            ProfileScope.APPLICATION,
            definition.scope,
        }
        if scope not in allowed_scopes:
            raise ValidationError("profile value scope is not allowed for attribute")
        if scope == ProfileScope.APPLICATION:
            if scope_id is None:
                raise ValidationError("application profile values require scope_id")
            if scope_id not in self.store.applications:
                raise ValidationError("application profile scope_id is not registered")
        elif scope == ProfileScope.TENANT:
            if scope_id is None:
                raise ValidationError("tenant profile values require scope_id")
        elif scope_id is not None:
            raise ValidationError(
                "only tenant or application scoped values may set scope_id"
            )

    def _validate_value(self, definition: AttributeDefinition, value: Any) -> None:
        if value is None:
            return
        validators = {
            "string": lambda item: isinstance(item, str),
            "integer": lambda item: isinstance(item, int) and not isinstance(item, bool),
            "number": lambda item: isinstance(item, (int, float))
            and not isinstance(item, bool),
            "boolean": lambda item: isinstance(item, bool),
            "object": lambda item: isinstance(item, Mapping),
            "array": lambda item: isinstance(item, (list, tuple)),
        }
        validator = validators.get(definition.value_type)
        if validator is None:
            raise ValidationError(f"unsupported attribute value_type: {definition.value_type}")
        if not validator(value):
            raise ValidationError(f"{definition.key} must be {definition.value_type}")
        enum_values = definition.validation.get("enum")
        if enum_values is not None and value not in enum_values:
            raise ValidationError(f"{definition.key} is not an allowed value")

    def _require_user(self, user_id: str) -> User:
        user = self.store.users.get(user_id)
        if user is None:
            raise NotFoundError("user not found")
        return user

    def _require_account(self, user_id: str) -> Account:
        account = self.store.user_account(user_id)
        if account is None:
            raise NotFoundError("account not found")
        return account

    def _require_attribute(self, attribute_key: str) -> AttributeDefinition:
        definition = self._active_attribute_definitions().get(attribute_key)
        if definition is None:
            raise NotFoundError("active attribute definition not found")
        return definition

    def _active_attribute_definitions(
        self,
        *,
        excluding_catalog_id: str | None = None,
        owning_application_id: str | None = None,
    ) -> dict[str, AttributeDefinition]:
        definitions: dict[str, AttributeDefinition] = {}
        for catalog in self.store.catalogs.values():
            if catalog.catalog_id == excluding_catalog_id:
                continue
            if (
                owning_application_id is not None
                and catalog.owning_application_id != owning_application_id
            ):
                continue
            if catalog.lifecycle != CatalogLifecycle.ACTIVE:
                continue
            for attribute in catalog.attributes:
                definitions[attribute.key] = attribute
        return dict(sorted(definitions.items()))


def _optional_claim(actor: Actor, key: str) -> str | None:
    value = actor.claims.get(key)
    if value is None:
        return None
    return str(value)


def _scope_concept(scope_type: str) -> str:
    concepts = {
        "team": "Team",
        "tenant": "Tenant",
        "application": "Scope",
        "family": "Group",
        "group": "Group",
    }
    return concepts.get(scope_type, "Scope")


def _family_dataspace_binding(
    request: FamilyDataspaceRequest,
) -> ApplicationBinding:
    event_source = request.event_source or request.application_id
    return ApplicationBinding(
        application_id=request.application_id,
        oidc_client_id=request.oidc_client_id,
        protected_system_id=request.protected_system_id,
        catalog_namespaces=(request.catalog_namespace,),
        event_source=event_source,
        deployment_ref=request.deployment_ref,
    )


def _family_profile_key(catalog_namespace: str, key: str) -> str:
    if key.startswith(f"{catalog_namespace}."):
        return key
    return f"{catalog_namespace}.{key}"


def _family_role_value(role: FamilyRole | str) -> str:
    try:
        return FamilyRole(str(role)).value
    except ValueError as exc:
        raise ValidationError(f"unsupported family role: {role}") from exc


def _visible_in_projection(
    definition: AttributeDefinition, projection_type: ProjectionType
) -> bool:
    if projection_type == ProjectionType.AUDIT:
        return True
    visibility = {
        ProjectionType.SELF_SERVICE: Visibility.USER,
        ProjectionType.ADMIN: Visibility.ADMIN,
        ProjectionType.APPLICATION_RUNTIME: Visibility.APPLICATION,
        ProjectionType.AGENT_CONTEXT: Visibility.APPLICATION,
        ProjectionType.CLAIMS_ENRICHMENT: Visibility.APPLICATION,
    }.get(projection_type)
    if visibility is None:
        return False
    return visibility in definition.visibility


def _is_application_projection(projection_type: ProjectionType) -> bool:
    return projection_type in {
        ProjectionType.APPLICATION_RUNTIME,
        ProjectionType.AGENT_CONTEXT,
        ProjectionType.CLAIMS_ENRICHMENT,
    }


def _must_redact(
    definition: AttributeDefinition, projection_type: ProjectionType
) -> bool:
    if projection_type in {
        ProjectionType.ADMIN,
        ProjectionType.AUDIT,
        ProjectionType.SELF_SERVICE,
    }:
        return False
    return definition.sensitivity in {Sensitivity.SENSITIVE, Sensitivity.SECRET}


def _version_tuple(version: str) -> tuple[int, int, int]:
    parts = version.split(".")
    if len(parts) != 3 or any(not part.isdigit() for part in parts):
        raise ValidationError("catalog version must be semantic MAJOR.MINOR.PATCH")
    return tuple(int(part) for part in parts)


def _sensitivity_rank(sensitivity: Sensitivity) -> int:
    return {
        Sensitivity.PUBLIC: 0,
        Sensitivity.INTERNAL: 1,
        Sensitivity.PERSONAL: 2,
        Sensitivity.SENSITIVE: 3,
        Sensitivity.SECRET: 4,
    }[sensitivity]