developer_float_migrate: connectivity depth N now means N rings

The ring loop added the frontier to the sample set one iteration late,
so depth 1 sampled only the point itself and depth 2 gave the first ring.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

 .../sop_lsgalante.developer_float_migrate.1.1.hdalc | Bin 13530 -> 13537 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)

diff --git a/otls/sop_lsgalante.developer_float_migrate.1.1.hdalc b/otls/sop_lsgalante.developer_float_migrate.1.1.hdalc
index 8f5b928..ac8fc47 100644
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