Fix missing event text in plaintext reply fallback

TODO.md

@@ -1,7 +1,10 @@
 # TODO
 
+- fix ctrl shift D
+- deselect/unfocus after removing or replying to messages
 - add room members loading indicator
 
+- fix event ID mention regex
 - fix lag when clicking accounts in the AccountBar with a very long room list
 - fix: on startup, if a room's last event is a membership change,
   it won't be visible in timeline no matter what the user config is

src/backend/matrix_client.py

@@ -429,7 +429,7 @@ class MatrixClient(nio.AsyncClient):
             source_body = getattr(to.source, "body", "")
 
             content["format"] = "org.matrix.custom.html"
-            content["body"]   = f"> <{to.sender_id}> {source_body}"
+            content["body"]   = f"> <{to.sender_id}> {source_body}\n{text}"
 
             to_html = REPLY_FALLBACK.format(
                 room_id  = room_id,