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fix(forwarder): preserve Cursor fork context

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Store checkpoint turns as validated blobs and restore prefetched parent turns so forked conversations retain their replay history and rewind prefix.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
DedSecer
2026-08-01 10:51:23 +08:00
co-authored by Cursor
parent 00f52166b2
commit 14b286a466
14 changed files with 1979 additions and 304 deletions
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internal/backend/forwarder/file_store.go
+2
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@@ -678,6 +678,7 @@ func mergeConversationMetadata(target *ConversationFile, source *ConversationFil
target.CurrentPlanText = source.CurrentPlanText
target.CurrentPlans = clonePlanRegistryEntries(source.CurrentPlans)
target.CurrentTodos = cloneTodoItems(source.CurrentTodos)
target.ImportedTurnIDs = cloneByteSlices(source.ImportedTurnIDs)
target.LatestRequestPrefix = cloneConversationRequestPrefix(source.LatestRequestPrefix)
target.LastProviderCall = cloneConversationProviderCall(source.LastProviderCall)
if !source.CreatedAt.IsZero() && (target.CreatedAt.IsZero() || source.CreatedAt.Before(target.CreatedAt)) {
@@ -806,6 +807,7 @@ func cloneConversationFile(conversation *ConversationFile) *ConversationFile {
cloned := *conversation
cloned.CurrentPlans = clonePlanRegistryEntries(conversation.CurrentPlans)
cloned.CurrentTodos = cloneTodoItems(conversation.CurrentTodos)
cloned.ImportedTurnIDs = cloneByteSlices(conversation.ImportedTurnIDs)
cloned.LatestRequestPrefix = cloneConversationRequestPrefix(conversation.LatestRequestPrefix)
cloned.LastProviderCall = cloneConversationProviderCall(conversation.LastProviderCall)
cloned.Entries = append([]HistoryEntry(nil), conversation.Entries...)