DiscordAdapter.edit_message clipped any formatted payload over the 2,000-char
cap to [:1997]+"..." and returned success=True, so the stream consumer
believed the full reply landed and stopped — the user lost everything past the
boundary and perceived the agent as quitting mid-task.
edit_message is now overflow-aware, mirroring Telegram's proven contract:
- finalize=True: split-and-deliver via _edit_overflow_split — edit chunk 1 in
place, send chunks 2..N as reply-threaded continuations, return the last
visible id in message_id plus continuation_message_ids so the stream
consumer keeps editing the most recent chunk and can clean them all up.
- finalize=False (mid-stream): truncate a one-message preview in place, never
split. A mid-stream split moves the edit target to a continuation and the
next accumulated-token tick re-splits, looping forever (the Telegram #48648
lesson the original port predated).
- Reactive 50035 '2000 or fewer in length' on edit runs the same branch logic.
- Partial continuation failure still reports success with a partial_overflow
raw_response so the consumer retries the tail instead of marking a clipped
reply complete.
Co-authored-by: xxxigm <tuancanhnguyen706@gmail.com>
Co-authored-by: AhmetArif0 <147827411+AhmetArif0@users.noreply.github.com>
af5cea04ab