fix (agentscope-ai#389)

Author: rayrayraykk

src/copaw/app/channels/base.py

@@ -197,7 +197,7 @@ def _on_debounce_buffer_append(
         del existing_items
 
     def _content_has_text(self, contents: List[Any]) -> bool:
-        """True if contents has actionable text/media payload."""
+        """True if contents has at least one TEXT or REFUSAL with non-empty."""
         if not contents:
             return False
         for c in contents:
@@ -212,14 +212,6 @@ def _content_has_text(self, contents: List[Any]) -> bool:
                 and (getattr(c, "refusal", None) or "").strip()
             ):
                 return True
-            # Media/file-only messages should also be processed immediately.
-            if t in (
-                ContentType.IMAGE,
-                ContentType.VIDEO,
-                ContentType.AUDIO,
-                ContentType.FILE,
-            ):
-                return True
         return False
 
     def _apply_no_text_debounce(