Phase 5: Replace cross-domain writes with glue services, emit events

- checkout.py: use claim_entries_for_order(), emit order.created
- check_sumup_status.py: use confirm_entries_for_order(), emit order.paid
- global_routes.py: use get_entries_for_order() instead of relationship
- order.py: remove calendar_entries relationship
- api.py: remove /adopt endpoint (replaced by event-driven adoption)

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

bp/cart/services/check_sumup_status.py

@@ -1,6 +1,6 @@
 from shared.browser.app.payments.sumup import get_checkout as sumup_get_checkout
-from sqlalchemy import update
-from events.models.calendars import CalendarEntry
+from shared.events import emit_event
+from glue.services.order_lifecycle import confirm_entries_for_order
 
 
 async def check_sumup_status(session, order):
@@ -13,21 +13,13 @@ async def check_sumup_status(session, order):
     if sumup_status == "PAID":
         if order.status != "paid":
             order.status = "paid"
-            filters = [
-                CalendarEntry.deleted_at.is_(None),
-                CalendarEntry.state == "ordered",
-                CalendarEntry.order_id==order.id,
-            ]
-            if order.user_id is not None:
-                filters.append(CalendarEntry.user_id == order.user_id)
-            elif order.session_id is not None:
-                filters.append(CalendarEntry.session_id == order.session_id)
-
-            await session.execute(
-                update(CalendarEntry)
-                .where(*filters)
-                .values(state="provisional")
+            await confirm_entries_for_order(
+                session, order.id, order.user_id, order.session_id
             )
+            await emit_event(session, "order.paid", "order", order.id, {
+                "order_id": order.id,
+                "user_id": order.user_id,
+            })
     elif sumup_status == "FAILED":
         order.status = "failed"
     else: