structured memory: facts/pinned/episodes, batched consolidation, participant-scoped recall

tests/test_bdd_envelope.py

@@ -43,8 +43,8 @@ class FakeModelResponder(AIResponder):
             return None, limit
         return {"role": "assistant", "content": self.scripted.pop(0)}, limit
 
-    async def memory_rewrite(self, memory: str, message_user: str, answer_user: str, question: str, answer: str) -> str:
-        return memory
+    async def consolidate(self, observations, known_facts):
+        return {"facts": [], "episode": None}
 
     async def translate(self, text: str, language: str = "english") -> str:
         return text