chore: no changes needed for calendar message card

backend/src/v1/agent/repository.py

@@ -84,6 +84,43 @@ class AgentRepository:
             await self._session.delete(session)
             await self._session.flush()
 
+    async def persist_user_message(
+        self,
+        *,
+        session_id: str,
+        run_id: str,
+        content_text: str,
+        metadata: dict[str, object] | None,
+    ) -> None:
+        try:
+            session_uuid = UUID(session_id)
+        except ValueError as exc:
+            raise HTTPException(status_code=422, detail="Invalid session_id") from exc
+
+        stmt = (
+            select(AgentChatSession)
+            .where(AgentChatSession.id == session_uuid)
+            .with_for_update()
+        )
+        session_row = (await self._session.execute(stmt)).scalar_one_or_none()
+        if session_row is None:
+            raise HTTPException(status_code=404, detail="Session not found")
+
+        next_seq = int(session_row.message_count or 0) + 1
+        payload_metadata = dict(metadata or {})
+        payload_metadata["run_id"] = run_id
+        message = AgentChatMessage(
+            session_id=session_uuid,
+            seq=next_seq,
+            role=AgentChatMessageRole.USER,
+            content=content_text,
+            metadata_json=payload_metadata,
+        )
+        self._session.add(message)
+        session_row.message_count = next_seq
+        session_row.last_activity_at = datetime.now(timezone.utc)
+        await self._session.flush()
+
     async def get_history_day(
         self, *, session_id: str, before: date | None
     ) -> dict[str, object] | None:
@@ -218,4 +255,12 @@ class AgentRepository:
                 payload["content"] = message.content
         else:
             payload["content"] = message.content
+            metadata = message.metadata_json or {}
+            attachments = (
+                metadata.get("attachments") if isinstance(metadata, dict) else None
+            )
+            if isinstance(attachments, list):
+                rendered = [item for item in attachments if isinstance(item, dict)]
+                if rendered:
+                    payload["attachments"] = rendered
         return payload