refactor: MaxHistory + ReminderInterval in appsettings auslagern

- MaxHistory (Default: 120): Max History-Messages pro API-Request
- ReminderInterval (Default: 30): System-Prompt Reminder alle N Messages (0 = deaktiviert)
- Beide Werte über Server-Settings-UI konfigurierbar
- Hardcoded Werte in ChatService durch konfigurierbare Felder ersetzt

Endpoints/ServerSettingsEndpoint.cs

@@ -25,6 +25,8 @@ public static class ServerSettingsEndpoint
         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("MaxHistory", "int", 120, "Max History-Messages pro Request", "number"),
+        new SettingDefinition("ReminderInterval", "int", 30, "System-Prompt Reminder alle N Messages (0 = deaktiviert)", "number"),
         new SettingDefinition("PayloadLogging", "bool", false, "API-Payloads loggen (Debug)", "toggle"),
         new SettingDefinition("PayloadLoggingGzip", "bool", false, "Payload-Logs als .gz komprimieren", "toggle"),
         new SettingDefinition("KreaToken", "string", "", "Krea API Token", "password"),

Program.cs

@@ -30,7 +30,9 @@ builder.Services.AddSingleton(skillService);
 // Shared Services
 var toolService = new ToolService();
 builder.Services.AddSingleton(toolService);
-var chatService = new ChatService(dbService, toolService, memoryService, skillService);
+var maxHistory = builder.Configuration.GetValue<int>("MaxHistory", 120);
+var reminderInterval = builder.Configuration.GetValue<int>("ReminderInterval", 30);
+var chatService = new ChatService(dbService, toolService, memoryService, skillService, maxHistory, reminderInterval);
 builder.Services.AddSingleton(chatService);
 
 // AnthropicService (Singleton – shared zwischen ChatEndpoint und TelegramService)

Services/ChatService.cs

@@ -14,13 +14,18 @@ public class ChatService
     private readonly ToolService _toolService;
     private readonly MemoryService _memoryService;
     private readonly SkillService _skillService;
+    private readonly int _maxHistory;
+    private readonly int _reminderInterval;
 
-    public ChatService(DatabaseService db, ToolService toolService, MemoryService memoryService, SkillService skillService)
+    public ChatService(DatabaseService db, ToolService toolService, MemoryService memoryService, SkillService skillService,
+        int maxHistory = 120, int reminderInterval = 30)
     {
         _db = db;
         _toolService = toolService;
         _memoryService = memoryService;
         _skillService = skillService;
+        _maxHistory = maxHistory;
+        _reminderInterval = reminderInterval;
     }
 
     public static string ResolveModelId(string model)
@@ -478,14 +483,13 @@ Für welche Plattform soll die App entwickelt werden? Web, Mobile oder Desktop?
             }
         }
 
-        // History auf maximal 120 Messages begrenzen (älteste entfernen)
+        // History auf maximal N Messages begrenzen (älteste entfernen)
-        const int maxHistory = 120;
+        if (history.Count > _maxHistory)
-        if (history.Count > maxHistory)
+            history.RemoveRange(0, history.Count - _maxHistory);
-            history.RemoveRange(0, history.Count - maxHistory);
 
         // Reminder einfügen: alle ~30 user/assistant-Paare ein Reminder-Paar einfügen
         var reminder = SystemPromptBuilder.BuildReminder(promptBlocks);
-        if (!string.IsNullOrWhiteSpace(reminder) && history.Count > 30)
+        if (!string.IsNullOrWhiteSpace(reminder) && _reminderInterval > 0 && history.Count > _reminderInterval)
         {
             var reminderUser = new Dictionary<string, object>
             {
@@ -504,7 +508,7 @@ Für welche Plattform soll die App entwickelt werden? Web, Mobile oder Desktop?
             for (int i = 0; i < history.Count; i++)
             {
                 messageCount++;
-                if (messageCount > 0 && messageCount % 30 == 0)
+                if (messageCount > 0 && messageCount % _reminderInterval == 0)
                 {
                     // Position nach dem aktuellen Element – aber nur einfügen wenn es eine
                     // assistant-Message ist (damit user/assistant-Alternierung nicht bricht)

appsettings.json

@@ -9,6 +9,8 @@
   "Port": 19000,
   "AnthropicToken": "",
   "MaxIterations": 100,
+  "MaxHistory": 120,
+  "ReminderInterval": 30,
   "PayloadLogging": false,
   "PayloadLoggingGzip": false,
   "KreaToken": "",