feat: initialize managed portal

managed/store_dwell_alert/app/modules/notifier.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from urllib import request
+
+
+def build_json_request(url: str, payload: dict, timeout_seconds: float = 5.0) -> request.Request:
+    data = json.dumps(payload).encode("utf-8")
+    req = request.Request(url=url, data=data, method="POST")
+    req.add_header("Content-Type", "application/json")
+    req.timeout_seconds = timeout_seconds
+    return req
+
+
+def append_json_event(path: str | Path, payload: dict) -> None:
+    output_path = Path(path)
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+    with output_path.open("a", encoding="utf-8") as handle:
+        handle.write(json.dumps(payload, ensure_ascii=False) + "\n")