Claude Code June 9 Release Adds --safe-mode, /cd, and a Switch to Hide Bundled Skills

Anthropic Claude Code·medium signal

Anthropic's June 9 Claude Code release added a --safe-mode flag (and CLAUDE_CODE_SAFE_MODE) that boots with all CLAUDE.md, plugins, skills, hooks, and MCP servers disabled for clean troubleshooting, plus a /cd command to move a session to a new working directory without breaking the prompt cache mid-session. It also adds disableBundledSkills (CLAUDE_CODE_DISABLE_BUNDLED_SKILLS) to hide built-in skills/workflows/slash commands from the model, alongside CPU-usage reductions and cross-platform fixes. For builders running customized agent setups daily, safe-mode and /cd directly target two common friction points: config bisection and cache-killing directory changes.