drift-sweep

Audit the ralphctl .claude/ setup (the 7 subagents, the in-repo skills, the .claude/docs/ modules) and CLAUDE.md for DRIFT against the real src/ — stale version stamps, renamed/dead paths, removed symbols, unshipped env vars, and fabricated references. Use this whenever someone asks to "audit / refresh / clean up / check the .claude setup", before cutting a release, after a large rename or refactor under src/, or…