Resume Session at Specific Message

What: Resume a conversation from a specific assistant message instead of from the end.

How to use:

claude --resume conversation.jsonl --resume-session-at msg_abc123

Details:

• Requires --resume flag to be set
• Provide an assistant message ID to start from that point in the conversation
• Returns error if the specified message ID is not found
• Useful for branching conversations or exploring alternative response paths
• Evidence: Validation at line 446036, message filtering at line 446470, configuration at line 448508