fix: rebuild trustworthy local-day evidence (#99)

tests/test_collector_history_tracer.py

@@ -154,7 +154,7 @@ class TestSchemaMigration:
 
         # Migrate
         steps = migrate_to_latest(db)
-        assert steps == 4  # v1→v2→v3→v4→v5
+        assert steps == 5  # v1→v2→v3→v4→v5→v6
 
         # Verify data preserved
         conn = sqlite3.connect(str(db))
@@ -375,7 +375,9 @@ class TestCollectionAtomicity:
         }
         monkeypatch.setattr("fenris.status.query_service_state", lambda: service)
 
-        now = datetime.now(timezone.utc).replace(second=0, microsecond=0)
+        now = datetime.now(timezone.utc).replace(
+            minute=35, second=0, microsecond=0,
+        )
         first = {
             **smartctl_fixture,
             "nvme_smart_health_information_log": {