Constant KERNEL_HELP_RAW_OK 

pub const KERNEL_HELP_RAW_OK: &str = "Kernel identifier: a source directory \
     path (e.g. `../linux`), a raw image file (`bzImage` / `Image`), a \
     version (`6.14.2`, or major.minor prefix `6.14` for latest patch), \
     or a cache key (see `kernel list`). Source directories auto-build \
     (can be slow on a fresh tree); versions auto-download from kernel.org \
     on cache miss. When absent, resolves via cache then filesystem, \
     falling back to downloading the latest stable kernel. Ranges \
     (`START..END`) and git sources (`git+URL#tag=NAME`) are not supported \
     in this context; pass a single kernel.";

Help text for --kernel in contexts that accept raw image files: cargo ktstr shell. Matches KernelResolvePolicy { accept_raw_image: true, .. }. See KERNEL_HELP_NO_RAW for the converse and the rationale for the asymmetry.