chore(infra): point staging registry to 185.252.31.44; keep prod K8S on 45.149.79.127

Co-authored-by: Cursor <cursoragent@cursor.com>

src/FrontOffice.Main/Dockerfile

@@ -1,4 +1,4 @@
-FROM 194.5.195.53:32082/dotnet/sdk:9.0 AS build
+FROM 185.252.31.44:32082/dotnet/sdk:9.0 AS build
 WORKDIR /src
 
 # Copy NuGet config and project file
@@ -16,7 +16,7 @@ WORKDIR "/src/FrontOffice.Main"
 RUN dotnet publish "FrontOffice.Main.csproj" -c Release -o /app/publish
 
 # Runtime stage - aspnet for Blazor Server
-FROM 194.5.195.53:32082/dotnet/aspnet:9.0 AS runtime
+FROM 185.252.31.44:32082/dotnet/aspnet:9.0 AS runtime
 WORKDIR /app
 COPY --from=build /app/publish .