feat(#357): Paket 6 — Contact-Model ins ContactsPlugin (physischer Move + PEP-562-Lazy-Re-Export-Bruecke, ALEMBIC_OWNED_TABLES gegen Schema-Dual-Ownership, outbox-Vorbestands-Fix in models/__init__)

app/models/__init__.py

@@ -8,7 +8,11 @@ from app.models.backup import Backup
 from app.models.bank_account import BankAccount
 from app.models.compliance import ComplianceIncident
 from app.models.consumer_inbox import ConsumerInbox
-from app.models.contact import Contact, ContactPerson
+
+# Contact/ContactPerson: lazy via package __getattr__ (Paket 6) — the physical
+# model lives in app.plugins.builtins.contacts.models; importing the plugin
+# framework while app.models is still initializing caused a proven circular
+# ImportError (app.core.auth -> app.models.session -> ... -> app.plugins).
 from app.models.contact_folder import ContactFolder
 from app.models.contact_merge import ContactMergeHistory
 from app.models.currency import Currency
@@ -18,6 +22,7 @@ from app.models.entity_permission import EntityPermission
 from app.models.entity_policy import EntityPolicy
 from app.models.group import Group, UserGroup
 from app.models.notification import Notification, NotificationPreference, NotificationType
+from app.models.outbox import EventOutbox, OutboxDelivery
 from app.models.owned_mixin import OwnedMixin
 from app.models.permission_delegation import PermissionDelegation
 from app.models.permission_template import PermissionTemplate
@@ -83,3 +88,17 @@ from app.models.workspace import (  # noqa: F401
     WorkspaceUser,
     WorkspaceWidget,
 )
+
+
+# ── Lazy Contact re-export (Paket 6, #357) ──────────────────────────────────
+# The physical home of Contact/ContactPerson is the ContactsPlugin
+# (app.plugins.builtins.contacts.models). Resolving them lazily via package
+# __getattr__ keeps ``from app.models import *`` (alembic/env.py) working
+# while avoiding a plugin-framework import during app.models initialization
+# (proven circular ImportError, see app/models/contact.py).
+def __getattr__(name: str):
+    if name in {"Contact", "ContactPerson"}:
+        from app.models.contact import Contact, ContactPerson
+
+        return {"Contact": Contact, "ContactPerson": ContactPerson}[name]
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")