What: Control which configuration sources Claude Code loads via a new --setting-sources command-line flag
How to use:
# Only load user settings (ignore project/local configs)
claude --setting-sources=user
# Load user and project settings (ignore local)
claude --setting-sources=user,project
# Managed environment mode (only enterprise policies and CLI flags)
claude --setting-sources=
Details:
Valid source values: user, project, local (comma-separated)
Policy settings and CLI flags are always loaded (cannot be disabled)
Enables controlled environments where project settings should be ignored
Affects CLAUDE.md loading, MCP server configuration, and agent definitions
Evidence: St5() at line 447294, N4A() at line 348834, pn0() at line 340374, Rg() at line 348856
