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FIX Stop Copilot and A2A targets from silently losing conversation history - #3078
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Utkarsh Bahuguna (u7k4rs6) wants to merge 7 commits into
Open
Utkarsh Bahuguna (u7k4rs6) wants to merge 7 commits into
Utkarsh Bahuguna (u7k4rs6) wants to merge 7 commits into
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Clarify editable-history semantics and check native support, configured adapters, or WebSocket restoration before copying conversation history. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 23cf5e2b-2223-44e3-ab65-252dcc5ce4ee
Richard Lundeen (richlundeen)
approved these changes
Oct 14, 2026
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GitHubCopilotTarget and A2ATarget keep the conversation on their side, and a few paths lost it without saying anything. Copilot now raises when a conversation already has turns but no live session, instead of opening a fresh session and sending only the last message. A2A sends its own contextId from the first turn, so turn 2 still continues when the agent doesn't return one, and it switches to the agent's id when it does. Repeat-send now checks that the target can replay the stored history before copying a conversation, so it fails up front instead of answering each copy blind. Richard reworked that last part into validate_history_replay on the target, so configured adapters and restore paths count too.
The new tests fail on main and pass here.
Fixes #3077