List available scenarios

Usage: ax-eval scenarios [OPTIONS]

Options:
      --tags <TAGS>  Filter by tags
      --tier <TIER>  Filter scenarios by tier (0=smoke, 1=quick, 2=standard, 3=comprehensive) [default: 0]
  -v, --verbose      Enable verbose output (or set RUST_LOG for fine-grained control)
  -h, --help         Print help
