Move runtime application state into a dedicated runtime state manager

backend/app/dependencies.py

@@ -21,6 +21,7 @@ from app.config import Settings
 from app.models.auth import Session
 from app.models.config import PendingRecovery
 from app.models.server import ServerStatus
+from app.utils.runtime_state import RuntimeState
 from app.utils.time_utils import utc_now
 
 log: structlog.stdlib.BoundLogger = structlog.get_logger()
@@ -35,6 +36,7 @@ class AppState(Protocol):
     server_status: ServerStatus
     pending_recovery: PendingRecovery | None
     last_activation: dict[str, datetime.datetime] | None
+    runtime_state: RuntimeState
 
 
 _COOKIE_NAME = "bangui_session"