Switch to unified AP activity bus

emit_event → emit_activity for login event. Update shared submodule.

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

bp/auth/routes.py

@@ -32,7 +32,7 @@ from shared.services.widget_registry import widgets
 from sqlalchemy.orm import selectinload
 from shared.browser.app.redis_cacher import clear_cache
 from shared.infrastructure.cart_identity import current_cart_identity
-from shared.events import emit_event
+from shared.events import emit_activity
 from .services import pop_login_redirect_target, store_login_redirect_target
 from .services.auth_operations import (
     get_app_host,
@@ -287,12 +287,12 @@ def register(url_prefix="/auth"):
                         u2.last_login_at = now
                     # Emit adoption event inside this transaction
                     if anon_session_id:
-                        await emit_event(
+                        await emit_activity(
                             s,
-                            "user.logged_in",
-                            "user",
-                            user_id,
-                            {
+                            activity_type="rose:Login",
+                            actor_uri="internal:system",
+                            object_type="Person",
+                            object_data={
                                 "user_id": user_id,
                                 "session_id": anon_session_id,
                             },