Claude Code October update recap

Anthropic's ClaudeDevs recaps the Claude Code October update: mods launched, the desktop app supports running more sessions in parallel, and users get a clearer picture of where usage goes. The thread also adds details such as idle sessions auto-compacting before the prompt cache expires, ultrathink raising effort for a single turn, subagent effort being specifiable, /usage explaining limit consumption, and timed-out shell commands moving to the background to keep running.