release: nexus btpanel session fix and app-v2

tests/test_alert_log_purge.py

@@ -0,0 +1,21 @@
+"""alert_logs retention purge helpers."""
+
+from datetime import datetime, timedelta, timezone
+
+from server.infrastructure.database.alert_log_repo import (
+    ALERT_LOG_PURGE_BATCH_SIZE,
+    ALERT_LOG_RETENTION_DAYS,
+)
+
+
+def test_alert_log_retention_constants():
+    assert ALERT_LOG_RETENTION_DAYS == 7
+    assert ALERT_LOG_PURGE_BATCH_SIZE >= 100
+
+
+def test_purge_cutoff_is_7_days_ago():
+    cutoff = datetime.now(timezone.utc).replace(tzinfo=None) - timedelta(
+        days=ALERT_LOG_RETENTION_DAYS
+    )
+    age = datetime.now(timezone.utc).replace(tzinfo=None) - cutoff
+    assert age.days == ALERT_LOG_RETENTION_DAYS