fix(gateway_tools,conversations): say refused in user turns, the reply reaches the human itself

src/beaver_gateway/core/conversations.py

@@ -883,6 +883,11 @@ class Conversations:
         self._ensure_worker(cast("int", conv.id))
         return item
 
+    def turn_origin(self, conv: Conversation) -> str | None:
+        """Origin of the running turn (``user``, ``inject``, ...); None when idle."""
+        runner = self._runners.get(cast("int", conv.id))
+        return runner.origin if runner is not None and runner.turn_id else None
+
     async def say(self, conv: Conversation, text: str) -> dict[str, Any]:
         runner = self._runners.get(cast("int", conv.id))
         _log.info("say[%s]: %s", conv.external_id, text[:200])