initial commit after split

src/govoplan_mail/backend/runtime.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+from typing import Any
+
+_runtime_settings: object | None = None
+
+
+def configure_runtime(*, settings: object | None = None) -> None:
+    global _runtime_settings
+    if settings is not None:
+        _runtime_settings = settings
+
+
+def get_settings() -> object:
+    if _runtime_settings is not None:
+        return _runtime_settings
+    try:
+        from govoplan_core.settings import settings as legacy_settings
+    except ModuleNotFoundError as exc:
+        raise RuntimeError("GovOPlaN Mail runtime settings are not configured") from exc
+    return legacy_settings
+
+
+class SettingsProxy:
+    def __getattr__(self, name: str) -> Any:
+        return getattr(get_settings(), name)
+
+
+settings = SettingsProxy()