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>

blog/bp/actions/routes.py

@@ -31,13 +31,65 @@ def register() -> Blueprint:
         result = await handler()
         return jsonify(result or {"ok": True})
 
-    # --- update-page-config (proxy to cart, where page_configs table lives) ---
+    # --- update-page-config ---
     async def _update_page_config():
-        """Create or update a PageConfig — proxies to cart service."""
-        from shared.infrastructure.actions import call_action
+        """Create or update a PageConfig (page_configs now lives in db_blog)."""
+        from shared.models.page_config import PageConfig
+        from sqlalchemy import select
+        from sqlalchemy.orm.attributes import flag_modified
 
         data = await request.get_json(force=True)
-        return await call_action("cart", "update-page-config", payload=data)
+        container_type = data.get("container_type", "page")
+        container_id = data.get("container_id")
+        if container_id is None:
+            return {"error": "container_id required"}, 400
+
+        pc = (await g.s.execute(
+            select(PageConfig).where(
+                PageConfig.container_type == container_type,
+                PageConfig.container_id == container_id,
+            )
+        )).scalar_one_or_none()
+
+        if pc is None:
+            pc = PageConfig(
+                container_type=container_type,
+                container_id=container_id,
+                features=data.get("features", {}),
+            )
+            g.s.add(pc)
+            await g.s.flush()
+
+        if "features" in data:
+            features = dict(pc.features or {})
+            for key, val in data["features"].items():
+                if isinstance(val, bool):
+                    features[key] = val
+                elif val in ("true", "1", "on"):
+                    features[key] = True
+                elif val in ("false", "0", "off", None):
+                    features[key] = False
+            pc.features = features
+            flag_modified(pc, "features")
+
+        if "sumup_merchant_code" in data:
+            pc.sumup_merchant_code = data["sumup_merchant_code"] or None
+        if "sumup_checkout_prefix" in data:
+            pc.sumup_checkout_prefix = data["sumup_checkout_prefix"] or None
+        if "sumup_api_key" in data:
+            pc.sumup_api_key = data["sumup_api_key"] or None
+
+        await g.s.flush()
+
+        return {
+            "id": pc.id,
+            "container_type": pc.container_type,
+            "container_id": pc.container_id,
+            "features": pc.features or {},
+            "sumup_merchant_code": pc.sumup_merchant_code,
+            "sumup_checkout_prefix": pc.sumup_checkout_prefix,
+            "sumup_configured": bool(pc.sumup_api_key),
+        }
 
     _handlers["update-page-config"] = _update_page_config