Fix duplicate table error: remove glue.models from model import loop

MenuNode and ContainerRelation now live in shared/models/ — importing
glue.models caused SQLAlchemy to see duplicate table definitions.
Also register the two new models in shared/models/__init__.py.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

infrastructure/factory.py

@@ -11,7 +11,7 @@ from shared.config import init_config, config, pretty
 from shared.models import KV  # ensure shared models imported
 # Register all app model classes with SQLAlchemy so cross-domain
 # relationship() string references resolve correctly.
-for _mod in ("blog.models", "market.models", "cart.models", "events.models", "glue.models"):
+for _mod in ("blog.models", "market.models", "cart.models", "events.models"):
     try:
         __import__(_mod)
     except ImportError:

models/__init__.py

@@ -25,3 +25,5 @@ from .calendars import (
     Calendar, CalendarEntry, CalendarSlot,
     TicketType, Ticket, CalendarEntryPost,
 )
+from .container_relation import ContainerRelation
+from .menu_node import MenuNode