Claude Code's /doctor Goes From Read-Only Report to Active Fixer; Background Agents Now Open Draft PRs

Claude Code Changelog·medium signal

The latest Claude Code changelog turns /doctor into a diagnose-and-fix command: it dedupes local CLAUDE.md files against checked-in ones, proposes trimming CLAUDE.md content it can derive from the codebase, ranks unused skills/MCP servers/plugins by context cost, and flags slow hooks. Background subagents now run by default and, when launched from `claude agents`, commit/push and open a draft PR on completion instead of stopping to ask. The Notification hook also now fires agent_needs_input / agent_completed for unattended sessions, and a fix stops a hook-callback timeout from being misreported as a user rejection.