Don't use a stinky Timer for user bumps and exclude AFK.

SharpChat/Program.cs

@@ -32,7 +32,9 @@ namespace SharpChat {
 
             if(hasCancelled) return;
 
-            using HttpClient httpClient = new();
+            using HttpClient httpClient = new(new HttpClientHandler() {
+                UseProxy = false, // we will never and the initial resolving takes forever on linux
+            });
             httpClient.DefaultRequestHeaders.Add(@"User-Agent", @"SharpChat/20230206");
 
             if(hasCancelled) return;