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/BackOffice/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/BackOffice"
 RUN dotnet publish "BackOffice.csproj" -c Release -o /app/publish
 
 # Runtime stage - nginx for Blazor WebAssembly
-FROM 194.5.195.53:32082/nginx:alpine AS final
+FROM 185.252.31.44:32082/nginx:alpine AS final
 WORKDIR /usr/share/nginx/html
 
 # Remove default nginx files

src/BackOffice/NuGet.config

@@ -5,7 +5,7 @@
     <!-- Local packages (dev builds) -->
     <!-- <add key="Local" value="/home/masoud/Apps/project/FourSat/nupkg" /> -->
     <!-- Nexus (hosts FourSat packages + proxies nuget.org) -->
-    <add key="Nexus" value="http://194.5.195.53:32081/repository/nuget-all/index.json" allowInsecureConnections="true" />
+    <add key="Nexus" value="http://185.252.31.44:32081/repository/nuget-all/index.json" allowInsecureConnections="true" />
   </packageSources>
   <packageSourceCredentials>
     <Nexus>