Replace the noisy rootfs path column in `banger image list` with the current rootfs file size so the table is easier to scan.
Render a ROOTFS SIZE column from the on-disk image size, fall back to `-` when the artifact cannot be statted, and keep the existing image summary output unchanged.
Add CLI coverage for both the formatted size case and the missing-file fallback, then rebuild and check the live command output.
Thales Maciel
3b7e77a2de