- BashTool: command blacklist (fork bombs, rm -rf /, etc) + risky command warning log. Blocked commands return clear error message. - ConfigTool: JSON file persistence (~/.claude-code/config.json), new 'list' action, loads from file on first access. - ToolSearchTool: search ToolRegistry by name/description keywords, returns matching tools with descriptions (total: 23 tools). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>