Cleanup stale antispam sst files

[jiemingwang]

Description

I noticed some unreferenced sst files were left around under .state/antispam/. Here are some examples:

root@instance-template-20260525-20260525-210054:/home/tesseract/tesseract/results# date
Tue Jul 14 23:11:58 UTC 2026

root@instance-template-20260525-20260525-210054:/home/tesseract/tesseract/results# ls -trl /sdd-ct-log/.state/antispam/
total 56080644
-rw------- 1 tesseract tesseract 28 Jun 7 14:41 KEYREGISTRY
-rw-r--r-- 1 tesseract tesseract 1048576 Jun 7 14:41 DISCARD
-rw-r--r-- 1 tesseract tesseract 47031 Jun 8 13:50 009885.sst
-rw-r--r-- 1 tesseract tesseract 16303386 Jun 8 15:49 013877.sst
-rw-r--r-- 1 tesseract tesseract 2393176 Jun 8 15:49 013875.sst
-rw-r--r-- 1 tesseract tesseract 5751189 Jun 8 15:49 013882.sst
-rw-r--r-- 1 tesseract tesseract 5677671 Jun 8 16:09 014547.sst
-rw-r--r-- 1 tesseract tesseract 16271970 Jun 8 16:09 014556.sst
-rw-r--r-- 1 tesseract tesseract 8149133 Jun 8 16:09 014574.sst
-rw-r--r-- 1 tesseract tesseract 8165349 Jun 8 17:09 016778.sst
-rw-r--r-- 1 tesseract tesseract 8123679 Jun 8 17:09 016787.sst
-rw-r--r-- 1 tesseract tesseract 8227275 Jun 8 17:50 018400.sst
-rw-r--r-- 1 tesseract tesseract 8278121 Jun 8 18:31 020088.sst
-rw-r--r-- 1 tesseract tesseract 6651065 Jun 8 18:31 020135.sst
-rw-r--r-- 1 tesseract tesseract 16227392 Jun 8 19:12 021872.sst
-rw-r--r-- 1 tesseract tesseract 16195903 Jun 8 19:12 021876.sst
-rw-r--r-- 1 tesseract tesseract 7959317 Jun 8 19:12 021875.sst
-rw-r--r-- 1 tesseract tesseract 8220684 Jun 8 19:12 021873.sst
-rw-r--r-- 1 tesseract tesseract 3826545 Jun 8 19:12 021877.sst
-rw-r--r-- 1 tesseract tesseract 3144490 Jun 8 19:12 021886.sst
-rw-r--r-- 1 tesseract tesseract 2666883 Jun 8 19:33 022801.sst
-rw-r--r-- 1 tesseract tesseract 2889496 Jun 9 00:41 023750.sst
-rw-r--r-- 1 tesseract tesseract 16281124 Jun 9 00:41 023748.sst
-rw-r--r-- 1 tesseract tesseract 8054852 Jun 9 00:41 023762.sst
-rw-r--r-- 1 tesseract tesseract 18386779 Jun 21 12:33 026264.sst
-rw-r--r-- 1 tesseract tesseract 159064 Jul 11 14:57 034113.sst
-rw-r--r-- 1 tesseract tesseract 19876546 Jul 12 16:00 036199.sst
-rw-r--r-- 1 tesseract tesseract 17584312 Jul 12 18:26 037695.sst
-rw-r--r-- 1 tesseract tesseract 257881736 Jul 12 19:02 038250.sst
-rw-r--r-- 1 tesseract tesseract 257880636 Jul 12 19:02 038252.sst
-rw-r--r-- 1 tesseract tesseract 204457437 Jul 12 19:03 038254.sst
-rw-r--r-- 1 tesseract tesseract 30638311 Jul 14 19:13 041042.sst