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-b324587b94ee2e98dc8eff5f6735303a2784b74f49068ce8e946cedcd8d12c4e.json

@@ -0,0 +1,20 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT COUNT(*) FROM alert_transitions WHERE transition_id = ?1",
+  "describe": {
+    "columns": [
+      {
+        "name": "COUNT(*)",
+        "ordinal": 0,
+        "type_info": "Integer"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false
+    ]
+  },
+  "hash": "b324587b94ee2e98dc8eff5f6735303a2784b74f49068ce8e946cedcd8d12c4e"
+}