v1.6.47

nextjs/saas-starterv1.6.47Jun 27, 2026by Ed1s0nZ

AI Summary

Fixes a bug where sending identical user prompts repeatedly caused a 400 error with Claude 4.6+ due to aggressive deduplication logic. The update refines the logic to skip appending only when the tail message is already identical, allowing continued conversation.

Key Highlights

Fixes Claude 4.6+ 'assistant-prefill final message is not supported' 400 error
Refines deduplication logic to allow repeated prompts in a conversation
Only skips appending user messages if the tail message is already identical

Full Release Notes

修复同一对话中重复发送相同用户提示词时，因历史去重逻辑误判而不再追加本轮 user 消息、导致请求以 assistant 结尾并触发 Claude 4.6+ 返回 400（assistant-prefill final message is not supported）的问题；现仅在尾部已是相同 user 内容时才跳过追加，重复提示词可正常续聊。

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Fix repeated identical user prompts in the same conversation failing with Claude 4.6+ 400 (assistant-prefill final message is not supported) because dedup logic skipped appending the new user turn when matching text appeared earlier; append is now skipped only when the tail message is already that user content, so identical prompts can continue normally.