refactor progress

fluxer_devops/cassandra/migrations/20260114000000_csam_evidence_expirations.cql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS fluxer.csam_evidence_expirations (
+    bucket text,
+    expires_at timestamp,
+    report_id bigint,
+    PRIMARY KEY ((bucket), expires_at, report_id)
+) WITH CLUSTERING ORDER BY (expires_at ASC);