Claude Code fixed `/resume` and `/teleport` letting Claude edit files the resumed conversation never read
Claude Code Changelog·medium signal
2.1.271 lists a fix for `/resume` and `/teleport` keeping the previous conversation's file-read tracking, which meant the read-before-edit invariant could be satisfied by a different session's reads. Anyone whose safety story rests on "Edit fails unless the file was read in this conversation" was relying on a guard that resume silently carried over from elsewhere.