Prompt repeatedly during quiet chat

app/memory/repository.py

@@ -105,6 +105,22 @@ class Repository:
         result = await self.session.execute(stmt)
         return list(result.scalars().all())
 
+    async def get_recent_human_messages(
+        self, session_id: str, limit: int = 50
+    ) -> list[ChatMessage]:
+        """Get recent non-bot chat messages from a session."""
+        stmt = (
+            select(ChatMessage)
+            .where(
+                ChatMessage.session_id == session_id,
+                ChatMessage.is_bot.is_(False),
+            )
+            .order_by(ChatMessage.timestamp.desc())
+            .limit(limit)
+        )
+        result = await self.session.execute(stmt)
+        return list(result.scalars().all())
+
     async def count_messages(self, session_id: str) -> int:
         """Count chat messages stored for a session."""
         stmt = select(func.count()).select_from(ChatMessage).where(
@@ -128,6 +144,22 @@ class Repository:
         result = await self.session.execute(stmt)
         return list(result.scalars().all())
 
+    async def get_human_messages_since(
+        self, session_id: str, since: datetime
+    ) -> list[ChatMessage]:
+        """Get non-bot messages recorded since a specific timestamp."""
+        stmt = (
+            select(ChatMessage)
+            .where(
+                ChatMessage.session_id == session_id,
+                ChatMessage.is_bot.is_(False),
+                ChatMessage.timestamp >= since,
+            )
+            .order_by(ChatMessage.timestamp.desc())
+        )
+        result = await self.session.execute(stmt)
+        return list(result.scalars().all())
+
     # Agent Action operations
 
     async def record_action(