allow to customize the push-server for testing

src/db/tables/settings.ts

@@ -20,9 +20,9 @@ export type Settings = {
   lastViewedClaimId?: string; // Last viewed claim ID
   lastNotifiedClaimId?: string; // Last notified claim ID
   isRegistered?: boolean;
+  pushServer?: string; // Push server URL
 
   // Array of named search boxes defined by bounding boxes
-
   searchBoxes?: Array<{
     name: string;
     bbox: BoundingBox;