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fix(copilot): use messages_dict in fallback context compaction

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The fallback path in _stream_chat_chunks was passing recent_messages
(already sliced) instead of messages_dict (full conversation) to
_ensure_tool_pairs_intact. This caused the function to fail to find
assistant messages that exist in the original conversation but were
outside the sliced window.

Fix: Pass messages_dict and slice_start (relative to messages_dict)
instead of recent_messages and reduced_slice_start.

Fixes SECRT-1861
Related: SECRT-1839
This commit is contained in:
Otto
2026-02-01 17:36:51 +00:00
parent 2abbb7fbc8
commit 39177b6e43
1 changed files with 4 additions and 4 deletions
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8
autogpt_platform/backend/backend/api/features/chat/service.py
View File

@@ -1184,11 +1184,11 @@ async def _stream_chat_chunks(
else recent_messages
)
# Ensure tool pairs stay intact in the reduced slice
reduced_slice_start = max(
0, len(recent_messages) - keep_count
)
# Note: Search in messages_dict (full conversation) not recent_messages
# (already sliced), so we can find assistants outside the current slice.
# Use slice_start (relative to messages_dict) for correct search range.
reduced_recent = _ensure_tool_pairs_intact(
reduced_recent, recent_messages, reduced_slice_start
reduced_recent, messages_dict, slice_start
)
if has_system_prompt:
messages = [