Update shared submodule + emit product events for federation

- Emit product.listed events when products are created
- Updated shared with federation handlers, delivery, anchoring

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

bp/api/routes.py

@@ -291,6 +291,20 @@ async def _create_product_from_payload(session: AsyncSession, payload: Dict[str,
     #await session.flush()  # get p.id
     _replace_children(p, payload)
     await session.flush()
+
+    # Emit federation event for new products
+    from shared.events import emit_event
+    await emit_event(
+        session,
+        event_type="product.listed",
+        aggregate_type="Product",
+        aggregate_id=p.id,
+        payload={
+            "title": p.title or "",
+            "description": getattr(p, "description", "") or "",
+        },
+    )
+
     return p
 
 # ---- API --------------------------------------------------------------------