thread fix

backend/app/services/external_reply_service.py

@@ -17,6 +17,7 @@ from app.services.message_ids import (
     message_id_fields,
 )
 from app.services.mime_parser import parse_mime
+from app.services.reply_extractor import build_reply_display
 from app.services.raw_mime_storage import get_raw_mime_storage
 from app.services.thread_service import threading_fields_from_parent
 
@@ -410,6 +411,10 @@ async def send_external_reply(
     )
 
     now = datetime.now(timezone.utc)
+    reply_display = build_reply_display(
+        body_text=plan.body_text,
+        body_html=plan.body_html,
+    )
     document = {
         "direction": "outbound",
         "message_scope": MESSAGE_SCOPE_EXTERNAL,
@@ -417,7 +422,10 @@ async def send_external_reply(
         "sender": {"name": sender_name, "address": sender},
         "to": [{"name": value.split("@")[0], "address": value} for value in plan.recipients],
         "subject": plan.subject,
-        "snippet": re.sub(r"\s+", " ", plan.body_text).strip()[:240],
+        "snippet": reply_display["snippet"],
+        "new_reply_content": reply_display["new_reply_content"],
+        "quoted_content": reply_display["quoted_content"],
+        "has_quoted_text": reply_display["has_quoted_text"],
         "body_text": plan.body_text,
         "body_html": plan.body_html,
         "attachments": [],