handoff fixes

backend/app/routers/agent_handoff.py

@@ -18,6 +18,7 @@ from app.schemas import (
     HandoffTestRequest,
     HandoffTestResult,
 )
+from app.services.handoff_mirror_policy import is_relay_acknowledgment_message
 from app.services.human_handoff_service import MESSAGE_SCOPE_HANDOFF
 from app.services.handoff_evaluator import EMAIL_TYPE_META, HANDOFF_LABELS, evaluate_handoff
 
@@ -261,8 +262,15 @@ async def get_handoff_conversation(
     messages: list[HandoffMessageRead] = []
     for row in rows:
         message = row["message"]
+        if is_relay_acknowledgment_message(message):
+            continue
         sender_address = (message.get("sender") or {}).get("address", "").lower()
-        role = "human" if sender_address == human_email else "agent"
+        if message.get("mirrored_from_external_message_id"):
+            role = "customer"
+        elif sender_address == human_email:
+            role = "human"
+        else:
+            role = "agent"
         event_at = row.get("event_at") or message.get("received_at") or message.get("sent_at") or message["created_at"]
         raw_body = message.get("raw_body")
         new_reply_content = message.get("new_reply_content")
@@ -281,6 +289,7 @@ async def get_handoff_conversation(
                     and new_reply_content
                     and raw_body.strip() != new_reply_content.strip()
                 ),
+                relay_status=message.get("relay_status") if role == "human" else None,
                 event_at=event_at,
             )
         )