Phase 5: AccountState-Split (Copytrading-Limits -> Modul)

- Copytrading-Detail-Einstellungen (PerMarketLimit, MaxBuyPrice, PerMasterLimit,
  Zeit-Limits, PreRedeemLimit, ProfitTarget, MaxPriceDifference) aus dem Core-
  AccountState in das Modul-Modell CopyTradingAccountSettings verschoben.
- CopyTradingState.AccountSettings + GetAccountSettings(accountId) (Default-safe).
- Consumer umgestellt: CopyTradingEngine, TraderMonitorService, PolymarketWssClient,
  frm_main lesen die Limits jetzt aus den Account-Settings.
- Neues Modul-Repo ICopyTradingAccountSettingsRepository (Collection ct_account_settings),
  in CopyTradingModule registriert.
- StartupHydration: Settings laden + EINMALIGE Migration der Alt-Limits aus dem
  Roh-accounts-Dokument (keine konfigurierten Limits gehen verloren).
- Build 0 Fehler.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/PolyTrader.Modules.CopyTrading/Models/CopyTradingAccountSettings.cs

@@ -0,0 +1,47 @@
+using System.ComponentModel;
+
+namespace PolyTraderSharp.Models
+{
+    /// <summary>
+    /// Copytrading-spezifische Detail-Einstellungen je Account (Investment-/Zeit-Limits).
+    /// Bewusst getrennt vom Core-<see cref="AccountState"/> (allgemeine Account-Daten):
+    /// Diese Werte gehören dem Copytrading-Modul und werden im Modul-View bearbeitet.
+    /// Persistiert in der Collection "ct_account_settings" (BsonId = AccountId).
+    /// </summary>
+    public class CopyTradingAccountSettings
+    {
+        [Browsable(false)]
+        [MongoDB.Bson.Serialization.Attributes.BsonId]
+        public int AccountId { get; set; }
+
+        [Category("01. Risk Management")]
+        public decimal PerMarketLimit { get; set; } = 5.0m;
+
+        [Category("01. Risk Management")]
+        public decimal MaxPriceDifference { get; set; } = 2.0m;
+
+        [Category("01. Risk Management")]
+        public decimal MaxBuyPrice { get; set; } = 0.98m;
+
+        [Category("01. Risk Management")]
+        public decimal ProfitTarget { get; set; } = 50.0m;
+
+        [Category("01. Risk Management")]
+        public decimal PreRedeemLimit { get; set; } = 0.0m;
+
+        [Category("01. Risk Management")]
+        public decimal PerMasterLimit { get; set; } = 10.0m;
+
+        [Category("02. Time Limits")]
+        public decimal perMaxTime6h { get; set; } = 20.0m;
+
+        [Category("02. Time Limits")]
+        public decimal perMaxTime24h { get; set; } = 20.0m;
+
+        [Category("02. Time Limits")]
+        public decimal perMaxTime72h { get; set; } = 20.0m;
+
+        [Category("02. Time Limits")]
+        public decimal perMaxTimeNone { get; set; } = 40.0m;
+    }
+}