Type of argument 'crop-overlap-ratio' should be changed from int to float

In script/amg.py
`
amg_settings.add_argument(
"--crop-overlap-ratio",
type=int,
default=None,
help="Larger numbers mean image crops will overlap more.",
)
`
conflicts with SamAutomaticMaskGenerator in segment_anything/automatic_mask_generator.py
`
class SamAutomaticMaskGenerator:
def __init__(
self,
model: Sam,
...,
crop_overlap_ratio: float = 512 / 1500,
...):
`

Open script/amg.py and compare the --crop-overlap-ratio argument definition with SamAutomaticMaskGenerator in segment_anything/automatic_mask_generator.py. Check how the CLI value is parsed and passed through, then confirm that fractional overlap ratios are accepted consistently with the generator's float default.

Written by the indexing model from the issue text.