Claude Code v2.1.207: Auto mode default, multiple fixes

v2.1.207 enables Auto mode on Bedrock, Vertex AI, and Foundry by default, removing the need for the CLAUDE_CODE_ENABLE_AUTO_MODE environment variable; users can disable it via disableAutoMode. It fixes terminal freezes and key lag caused by streaming responses with long lists, tables, paragraphs, or code blocks. Non-interactive runs (claude -p, SDK) no longer permanently record remote management settings as agreed without showing a security confirmation dialog. The auto-updater no longer overwrites custom startup scripts or symlinks at ~/.local/bin/claude on each release; /doctor now reports externally managed launchers. For plugins, shell-form commands with ${user_config.*} are now rejected (fixing injection risk), and plugin option values are no longer read from project-level .claude/settings.json—only user-level, --settings, and admin settings apply. For developers using Claude Code in automated workflows and team collaboration, Auto mode default lowers configuration barriers; terminal freeze fixes improve coding experience; plugin injection fixes enhance security. Windows users also benefit from an AWS credential parsing timeout fix, preventing infinite hangs.