Split cart into 4 microservices: relations, likes, orders, page-config→blog

Phase 1 - Relations service (internal): owns ContainerRelation, exposes
get-children data + attach/detach-child actions. Retargeted events, blog,
market callers from cart to relations.

Phase 2 - Likes service (internal): unified Like model replaces ProductLike
and PostLike with generic target_type/target_slug/target_id. Exposes
is-liked, liked-slugs, liked-ids data + toggle action.

Phase 3 - PageConfig → blog: moved ownership to blog with direct DB queries,
removed proxy endpoints from cart.

Phase 4 - Orders service (public): owns Order/OrderItem + SumUp checkout
flow. Cart checkout now delegates to orders via create-order action.
Webhook/return routes and reconciliation moved to orders.

Phase 5 - Infrastructure: docker-compose, deploy.sh, Dockerfiles updated
for all 3 new services. Added orders_url helper and factory model imports.

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

orders/services/check_sumup_status.py

@@ -0,0 +1,63 @@
+"""Check SumUp checkout status and update order accordingly.
+
+Moved from cart/bp/cart/services/check_sumup_status.py.
+"""
+from types import SimpleNamespace
+
+from shared.browser.app.payments.sumup import get_checkout as sumup_get_checkout
+from shared.events import emit_activity
+from shared.infrastructure.actions import call_action
+from shared.infrastructure.data_client import fetch_data
+
+
+async def check_sumup_status(session, order, *, page_config=None):
+    # Auto-fetch page_config from blog if order has one and caller didn't provide it
+    if page_config is None and order.page_config_id:
+        raw_pc = await fetch_data(
+            "blog", "page-config-by-id",
+            params={"id": order.page_config_id},
+            required=False,
+        )
+        if raw_pc:
+            page_config = SimpleNamespace(**raw_pc)
+
+    checkout_data = await sumup_get_checkout(order.sumup_checkout_id, page_config=page_config)
+    order.sumup_status = checkout_data.get("status") or order.sumup_status
+    sumup_status = (order.sumup_status or "").upper()
+
+    if sumup_status == "PAID":
+        if order.status != "paid":
+            order.status = "paid"
+            await call_action("events", "confirm-entries-for-order", payload={
+                "order_id": order.id, "user_id": order.user_id,
+                "session_id": order.session_id,
+            })
+            await call_action("events", "confirm-tickets-for-order", payload={
+                "order_id": order.id,
+            })
+
+            page_post_id = page_config.container_id if page_config else None
+            await call_action("cart", "clear-cart-for-order", payload={
+                "user_id": order.user_id,
+                "session_id": order.session_id,
+                "page_post_id": page_post_id,
+            })
+
+            await emit_activity(
+                session,
+                activity_type="rose:OrderPaid",
+                actor_uri="internal:orders",
+                object_type="rose:Order",
+                object_data={
+                    "order_id": order.id,
+                    "user_id": order.user_id,
+                },
+                source_type="order",
+                source_id=order.id,
+            )
+    elif sumup_status == "FAILED":
+        order.status = "failed"
+    else:
+        order.status = sumup_status.lower() or order.status
+
+    await session.flush()