fix(openviking): preserve structured turn sync attribution

agent/codex_runtime.py

@@ -290,6 +290,7 @@ def run_codex_app_server_turn(
                 original_user_message=original_user_message,
                 final_response=turn.final_text,
                 interrupted=False,
+                messages=messages,
             )
         except Exception:
             logger.debug("external memory sync raised", exc_info=True)

agent/message_content.py

@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any
+
+
+_NON_TEXT_PART_TYPES = {"image", "image_url", "input_image", "audio", "input_audio"}
+_TEXT_KEYS = ("text", "content", "input_text", "output_text", "summary_text")
+
+
+def _field(value: Any, key: str) -> Any:
+    if isinstance(value, Mapping):
+        return value.get(key)
+    return getattr(value, key, None)
+
+
+def _text_from_part(part: Any) -> str:
+    if part is None:
+        return ""
+    if isinstance(part, str):
+        return part
+
+    part_type = str(_field(part, "type") or "").strip().lower()
+    if part_type in _NON_TEXT_PART_TYPES:
+        return ""
+
+    for key in _TEXT_KEYS:
+        text = _field(part, key)
+        if isinstance(text, str):
+            return text
+    return ""
+
+
+def flatten_message_text(content: Any, *, sep: str = "\n") -> str:
+    """Return the visible text from common chat/Responses message content shapes."""
+    if content is None:
+        return ""
+    if isinstance(content, str):
+        return content
+    if isinstance(content, list):
+        chunks = [_text_from_part(part) for part in content]
+        return sep.join(chunk for chunk in chunks if chunk)
+
+    text = _text_from_part(content)
+    if text:
+        return text
+    try:
+        return str(content)
+    except Exception:
+        return ""