Claude Code 2.1.300 widens hooks and hardens resumed work
Anthropic's immutable Claude Code 2.1.300 release adds prompt-change and workflow-agent rewrite hooks, transcript and OpenTelemetry detail, an AWS advisor selector, and fixes for resumed agents, hook validation, policy attribution, duplicate cloud turns and stuck runners.
Why it matters: The release changes both extension authority and recovery behavior. Mods can rewrite workflow-agent prompts and models, while transcripts can contain full request configuration; at the same time, restart, compaction and hook-validation fixes reduce lost or…