refactor(config): introduire l'endpoint CalDAV commun

Co-authored-by: Codex <codex@antoineve.me>

pronote_sync/sync/caldav.py

@@ -79,11 +79,12 @@ class CalDAVGateway:
             else cast(Callable[..., Any], caldav.DAVClient)
         )
         self._calendar_path: str = settings.calendar_path
+        url_secret = settings.endpoint.url if settings.endpoint is not None else None
         self._redacted_url: str | None = (
-            redact_url(settings.url.get_secret_value()) if settings.url else None
+            redact_url(url_secret.get_secret_value()) if url_secret else None
         )
         self._username: str | None = settings.username
-        self._url_secret: SecretStr | None = settings.url
+        self._url_secret: SecretStr | None = url_secret
         self._password_secret: SecretStr | None = settings.password
         self._client: Any = None
         self._calendar: Any = None

pronote_sync/sync/synchronizer.py

@@ -96,7 +96,7 @@ def synchronize(
     )
 
     if (
-        settings.caldav.url is None
+        settings.caldav.endpoint is None
         or settings.caldav.username is None
         or settings.caldav.password is None
     ):