alert history work

- dedup error handling
- alert now clears with observation_retenstion_seconds
- evaluate recent alerts once per server per 5s
- some iter stuff, some type stuff, and some store api stuff.

.sqlx/query-ca612fee8c80f815b33dbc088cc7e0a7552f1f4e38390959e14ea5cc765bf2c7.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "DELETE FROM audit_events WHERE ts_unix < ?1",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": []
+  },
+  "hash": "ca612fee8c80f815b33dbc088cc7e0a7552f1f4e38390959e14ea5cc765bf2c7"
+}