Server-Port konfigurierbar statt hardcoded

- Program.cs: Port aus Config lesen mit Fallback 19000
- appsettings.json: Port: 19000 als Default
- ServerSettingsEndpoint: Port als erste Einstellung (mit Neustart-Hinweis)

Endpoints/ServerSettingsEndpoint.cs

@@ -22,6 +22,7 @@ public static class ServerSettingsEndpoint
     // Definiert alle konfigurierbaren Properties mit Typ und Standardwert
     private static readonly List<SettingDefinition> Definitions = new List<SettingDefinition>
     {
+        new SettingDefinition("Port", "int", 19000, "Server-Port (erfordert Neustart)", "number"),
         new SettingDefinition("AnthropicToken", "string", "", "Anthropic API Key", "password"),
         new SettingDefinition("MaxIterations", "int", 100, "Max Tool-Loop Iterationen pro Chat", "number"),
         new SettingDefinition("PayloadLogging", "bool", false, "API-Payloads loggen (Debug)", "toggle"),

Program.cs

@@ -84,4 +84,5 @@ app.MapSharedEndpoints();
 app.MapAdminEndpoints();
 app.MapServerSettingsEndpoints();
 
-app.Run("http://0.0.0.0:19000");
+var port = app.Configuration.GetValue<int>("Port", 19000);
+app.Run($"http://0.0.0.0:{port}");

appsettings.json

@@ -6,6 +6,7 @@
     }
   },
   "AllowedHosts": "*",
+  "Port": 19000,
   "AnthropicToken": "",
   "MaxIterations": 100,
   "PayloadLogging": false,