Refactored stream observations and config refresh handling.

owncastsentry/metrics.py

@@ -23,6 +23,9 @@ from prometheus_client import CollectorRegistry, Counter, Gauge, Info
 
 from .types import StreamStatus
 
+if TYPE_CHECKING:
+    from collections.abc import Callable, Generator
+
 
 class NotificationType(StrEnum):
     """Notification type labels for the delivery counter."""
@@ -40,9 +43,6 @@ class ErrorSource(StrEnum):
     COMMAND = "command"
 
 
-if TYPE_CHECKING:
-    from collections.abc import Callable, Generator
-
 # Mapping from StreamStatus enum to numeric gauge values
 _STATUS_VALUES: dict[StreamStatus, float] = {
     StreamStatus.ONLINE: 1.0,