human hand off

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.mime_body_extractor import ExtractedMimePart
 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
@@ -351,6 +352,9 @@ async def send_external_reply(
     generated_by: str | None = None,
     generated_from_handoff_message_id: ObjectId | None = None,
     message_origin: str | None = None,
+    message_id: str | None = None,
+    inline_parts: list[ExtractedMimePart] | None = None,
+    file_attachments: list[ExtractedMimePart] | None = None,
 ) -> dict:
     if generated_from_handoff_message_id:
         existing = await database.messages.find_one(
@@ -386,6 +390,7 @@ async def send_external_reply(
 
     internet_message_id = await deliver_email(
         sender=sender,
+        sender_name=sender_name,
         recipients=plan.recipients,
         cc=[],
         bcc=[],
@@ -395,6 +400,9 @@ async def send_external_reply(
         domain=domain,
         in_reply_to=plan.threading.in_reply_to,
         references=plan.threading.references,
+        message_id=message_id,
+        inline_parts=inline_parts,
+        file_attachments=file_attachments,
     )
     normalized_id = canonical_message_id(internet_message_id)
     id_fields = message_id_fields(normalized_id)
@@ -428,7 +436,16 @@ async def send_external_reply(
         "has_quoted_text": reply_display["has_quoted_text"],
         "body_text": plan.body_text,
         "body_html": plan.body_html,
-        "attachments": [],
+        "attachments": [
+            {
+                "filename": part.filename,
+                "content_type": part.content_type,
+                "size": len(part.payload),
+                "content_id": part.content_id,
+                "disposition": part.disposition,
+            }
+            for part in [*(inline_parts or []), *(file_attachments or [])]
+        ],
         "created_at": now,
         "sent_at": now,
         "status": "accepted",
@@ -469,7 +486,7 @@ async def send_external_reply(
             "recipients": document["to"],
             "subject": plan.subject,
             "snippet": document["snippet"],
-            "attachments": [],
+            "attachments": document["attachments"],
             "status": "accepted",
             "is_read": True,
             "is_starred": False,