Move a session to a new directory with /cd, let subagents spawn their own subagents, and troubleshoot a broken configuration with safe mode.
The new /cd command moves the current session to a different working directory without rebuilding the prompt cache: the new directory's CLAUDE.md is appended as a message instead of replacing the system prompt. The session relocates to the new directory's project storage, so `--resume` and `--continue` find it there. Claude prompts you to trust the directory if you haven't worked in it before.
Move the session into another project without restarting:
> /cd ../other-project
Subagents can now spawn their own subagents. The subagent panel below the prompt shows the full tree: each row carries a count of its descendants and a path back to main. Subagent chains are capped at five levels deep to prevent runaway concurrent trees.
Open the agents view to watch the nested tree as work fans out:
> /agents
Start Claude Code with `--safe-mode`, or set CLAUDE\_CODE\_SAFE\_MODE, to launch with all customizations disabled: CLAUDE.md, skills, plugins, hooks, MCP servers, and custom commands and agents do not load. Authentication, model selection, built-in tools, and permissions still work. If a problem disappears in safe mode, one of those surfaces is the cause.
Launch a clean session to isolate a broken configuration:
claude --safe-mode
Other wins
fallbackModel configures up to three fallback models tried in order when the primary is overloaded or unavailable, and `--fallback-model` now applies to interactive sessions toolanguage settingid and state fields, and no longer omits blocked or newly dispatched sessions/plugin now has a search bardisableBundledSkills setting and CLAUDE\_CODE\_DISABLE\_BUNDLED\_SKILLS hide bundled skills, workflows, and built-in commands from the model"\*" denies all tools, and unknown tool names in deny rules now warn at startupSendMessage from other agents no longer carry user authority, and auto mode blocks them\~/.aws config files when AWS\_REGION is unset, and /status shows where the region came fromenforceAvailableModels managed setting makes the availableModels allowlist also constrain the Default modelclaude update announces the target version before downloading instead of going silentfooterLinksRegexes setting adds regex-matched link badges to the footer row