fix(session): remove message time replay prefixes

nanobot/agent/loop.py

@@ -1183,7 +1183,6 @@ class AgentLoop:
         _hist_kwargs: dict[str, Any] = {
             "max_messages": self._max_messages,
             "max_tokens": self._replay_token_budget(),
-            "include_timestamps": True,
             "extend_to_user": is_subagent,
         }
         history = session.get_history(**_hist_kwargs)
@@ -1462,7 +1461,6 @@ class AgentLoop:
         _hist_kwargs: dict[str, Any] = {
             "max_messages": self._max_messages,
             "max_tokens": self._replay_token_budget(),
-            "include_timestamps": True,
             "extend_to_user": False,
         }
         ctx.history = ctx.session.get_history(**_hist_kwargs)

nanobot/agent/memory.py

@@ -712,17 +712,12 @@ class Consolidator:
     @staticmethod
     def _full_unconsolidated_history(
         session: Session,
-        *,
-        include_timestamps: bool = False,
     ) -> list[dict[str, Any]]:
         """Return the whole unconsolidated tail for consolidation decisions."""
         unconsolidated_count = len(session.messages) - session.last_consolidated
         if unconsolidated_count <= 0:
             return []
-        return session.get_history(
-            max_messages=unconsolidated_count,
-            include_timestamps=include_timestamps,
-        )
+        return session.get_history(max_messages=unconsolidated_count)
 
     @staticmethod
     def _replay_overflow_boundary(
@@ -797,7 +792,7 @@ class Consolidator:
         session: Session,
     ) -> tuple[int, str]:
         """Estimate prompt size from the full unconsolidated session tail."""
-        history = self._full_unconsolidated_history(session, include_timestamps=True)
+        history = self._full_unconsolidated_history(session)
         channel, chat_id = (session.key.split(":", 1) if ":" in session.key else (None, None))
         # Include archived summary in estimation so the budget accounts for it.
         meta = session.metadata.get("_last_summary")