Add Markitect bridge and activation quality

src/phase_memory/activation.py

@@ -17,6 +17,7 @@ def plan_activation(
 ) -> ActivationPlan:
     selected: list[str] = []
     omitted: list[dict[str, object]] = []
+    selected_items: dict[str, dict[str, object]] = {}
     token_estimate = 0
 
     ordered_nodes = _ordered_nodes(graph, priority_node_ids)
@@ -29,6 +30,15 @@ def plan_activation(
             omitted.append({"id": node.node_id, "reason": "max_tokens", "tokens": node_tokens})
             continue
         selected.append(node.node_id)
+        selected_items[node.node_id] = {
+            "source_spans": list(node.source_spans),
+            "provenance": list(node.provenance),
+            "confidence": node.confidence,
+            "freshness": dict(node.freshness),
+            "namespace": dict(node.namespace),
+            "policy": dict(node.policy),
+            "reason_selected": "priority" if node.node_id in priority_node_ids else "budget_order",
+        }
         token_estimate += node_tokens
 
     selected_event_ids: tuple[str, ...] = ()
@@ -54,6 +64,7 @@ def plan_activation(
             "max_items": max_items,
             "max_tokens": max_tokens,
             "omitted": omitted,
+            "selected_items": selected_items,
         },
     }