Supervisor S-0a/b: Entscheidungsjournal, Order-Events, SignalId, JSONL-Logs

Datenfundament fuer die KI-Analyse (docs/konzepte/KONZEPT-Modul-Supervisor.md, Phase S-0).
Sofortnutzen auch ohne KI: abfragbare Rejects, rekonstruierbare Order-Ketten.

- core_decision_journal (DecisionRecord): JEDE Handelsentscheidung strukturiert -
  Decision (Executed/Rejected/Skipped/Failed) + ReasonCode-Enum (als String, erweiterbar)
  + Kontext-JSON (kulturinvariant) + MarketSlug/EndDate (counterfactual-ready).
- core_order_events (OrderEventRecord): Order-Lifecycle als Daten (Placed/PlaceFailed/
  LadderStart/LadderStep/FloorReplaced/DustAbort ...) inkl. CLOB-Response.
- SignalId (GUID) auf CopySignal, durchgereicht bis ClosedTrade + Core-TradeRecord
  (Dual-Write) und in die Leiter (ExitLadderState.SignalId) -> Dossier-Korrelation.
- CopyTradingEngine: ~20 Entscheidungs-Sites journalisieren zusaetzlich zum Freitext-Log
  (Mode/SellOnly/H3/MaxBuyPrice/PerMaster/TimeLimit/Budget/Balance/Minimum/SpamBlock/
  Leiter/Ownership/NotFound/Teilverkauf/Inkonsistenz/Grace/Demo-Fill/-Close/Live-BUY).
- SellLadderService: Order-Events fuer Start/Step/Floor-Replace/Dust; IOrderEventLog injiziert.
- TerminalLogger: JSONL-Sink (eine Datei/Tag, LogJson pur) + CorrelationId-Support. Dual-Sink.
- Journal-Writes fehlertolerant (brechen den Geld-Pfad nie).
- Migrationen offline generiert UND angewendet (rein additiv): Core (Widen F1 + Journal),
  CopyTrading (SignalId), RF (Initial) - DB war bis AddMarketTakerFeeBps migriert, verifiziert.
- Launcher-Designer: Account-Spalten-Instanziierung wiederhergestellt (war bei Designer-
  Reserialisierung verloren gegangen -> NullReference im Smoke).

Tests: +5 (LogJson, Journal-Roundtrips, SignalId) + Journal-Assertions in Engine-Tests.
Build 0 Fehler, 336 Tests gruen, --smoke-ui komplett gruen (alle Views inkl. RF gegen echte Tabellen).

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

Ui/LauncherForm.Designer.cs

@@ -25,6 +25,8 @@ namespace PolyTraderSharp.Ui
             btn_settings = new ToolStripButton();
             btn_terminal = new ToolStripButton();
             btn_jobs = new ToolStripButton();
+            btn_accounting = new ToolStripButton();
+            toolStripSeparator1 = new ToolStripSeparator();
             toolstrip_quickbar = new ToolStrip();
             btn_liveTrading = new ToolStripButton();
             btn_demoTrading = new ToolStripButton();
@@ -40,8 +42,6 @@ namespace PolyTraderSharp.Ui
             colAccPnl3d = new DataGridViewTextBoxColumn();
             colAccWin3d = new DataGridViewTextBoxColumn();
             colAccOverall = new DataGridViewTextBoxColumn();
-            btn_accounting = new ToolStripButton();
-            toolStripSeparator1 = new ToolStripSeparator();
             menuStrip.SuspendLayout();
             toolstrip_windows.SuspendLayout();
             toolstrip_quickbar.SuspendLayout();
@@ -122,6 +122,21 @@ namespace PolyTraderSharp.Ui
             btn_jobs.Text = "Server Jobs";
             btn_jobs.TextImageRelation = TextImageRelation.ImageAboveText;
             // 
+            // btn_accounting
+            // 
+            btn_accounting.Image = Properties.Resources.coins_in_hand;
+            btn_accounting.ImageScaling = ToolStripItemImageScaling.None;
+            btn_accounting.ImageTransparentColor = Color.Magenta;
+            btn_accounting.Name = "btn_accounting";
+            btn_accounting.Size = new Size(106, 65);
+            btn_accounting.Text = "Accounting";
+            btn_accounting.TextImageRelation = TextImageRelation.ImageAboveText;
+            // 
+            // toolStripSeparator1
+            // 
+            toolStripSeparator1.Name = "toolStripSeparator1";
+            toolStripSeparator1.Size = new Size(6, 70);
+            // 
             // toolstrip_quickbar
             // 
             toolstrip_quickbar.ImageScalingSize = new Size(24, 24);
@@ -179,10 +194,9 @@ namespace PolyTraderSharp.Ui
             // 
             dgv_accountlist.AllowUserToAddRows = false;
             dgv_accountlist.AllowUserToDeleteRows = false;
-            dgv_accountlist.AutoGenerateColumns = false;
+            dgv_accountlist.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
             dgv_accountlist.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
-            dgv_accountlist.Columns.AddRange(new DataGridViewColumn[] {
+            dgv_accountlist.Columns.AddRange(new DataGridViewColumn[] { colAccName, colAccModules, colAccPoly, colAccBalance, colAccPnl3d, colAccWin3d, colAccOverall });
-            colAccName, colAccModules, colAccPoly, colAccBalance, colAccPnl3d, colAccWin3d, colAccOverall });
             dgv_accountlist.Dock = DockStyle.Fill;
             dgv_accountlist.Location = new Point(0, 139);
             dgv_accountlist.Name = "dgv_accountlist";
@@ -192,11 +206,12 @@ namespace PolyTraderSharp.Ui
             dgv_accountlist.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
             dgv_accountlist.Size = new Size(2599, 498);
             dgv_accountlist.TabIndex = 6;
-            //
+            // 
             // colAccName
             //
             colAccName.DataPropertyName = "Name";
             colAccName.HeaderText = "Account";
+            colAccName.MinimumWidth = 8;
             colAccName.Name = "colAccName";
             colAccName.ReadOnly = true;
             colAccName.Width = 200;
@@ -205,6 +220,7 @@ namespace PolyTraderSharp.Ui
             //
             colAccModules.DataPropertyName = "Modules";
             colAccModules.HeaderText = "Module";
+            colAccModules.MinimumWidth = 8;
             colAccModules.Name = "colAccModules";
             colAccModules.ReadOnly = true;
             colAccModules.Width = 220;
@@ -212,15 +228,18 @@ namespace PolyTraderSharp.Ui
             // colAccPoly
             //
             colAccPoly.HeaderText = "Polymarket";
+            colAccPoly.MinimumWidth = 8;
             colAccPoly.Name = "colAccPoly";
+            colAccPoly.ReadOnly = true;
             colAccPoly.Text = "Öffnen";
             colAccPoly.UseColumnTextForButtonValue = true;
-            colAccPoly.Width = 100;
+            colAccPoly.Width = 106;
             //
             // colAccBalance
             //
             colAccBalance.DataPropertyName = "Balance";
             colAccBalance.HeaderText = "Wallet (USDC)";
+            colAccBalance.MinimumWidth = 8;
             colAccBalance.Name = "colAccBalance";
             colAccBalance.ReadOnly = true;
             colAccBalance.Width = 130;
@@ -229,6 +248,7 @@ namespace PolyTraderSharp.Ui
             //
             colAccPnl3d.DataPropertyName = "Pnl3d";
             colAccPnl3d.HeaderText = "3T PnL";
+            colAccPnl3d.MinimumWidth = 8;
             colAccPnl3d.Name = "colAccPnl3d";
             colAccPnl3d.ReadOnly = true;
             colAccPnl3d.Width = 110;
@@ -237,6 +257,7 @@ namespace PolyTraderSharp.Ui
             //
             colAccWin3d.DataPropertyName = "WinRate3d";
             colAccWin3d.HeaderText = "3T Winrate %";
+            colAccWin3d.MinimumWidth = 8;
             colAccWin3d.Name = "colAccWin3d";
             colAccWin3d.ReadOnly = true;
             colAccWin3d.Width = 110;
@@ -245,24 +266,10 @@ namespace PolyTraderSharp.Ui
             //
             colAccOverall.DataPropertyName = "OverallPnl";
             colAccOverall.HeaderText = "Overall P/L";
+            colAccOverall.MinimumWidth = 8;
             colAccOverall.Name = "colAccOverall";
             colAccOverall.ReadOnly = true;
             colAccOverall.Width = 130;
-            //
-            // btn_accounting
-            // 
-            btn_accounting.Image = Properties.Resources.coins_in_hand;
-            btn_accounting.ImageScaling = ToolStripItemImageScaling.None;
-            btn_accounting.ImageTransparentColor = Color.Magenta;
-            btn_accounting.Name = "btn_accounting";
-            btn_accounting.Size = new Size(106, 65);
-            btn_accounting.Text = "Accounting";
-            btn_accounting.TextImageRelation = TextImageRelation.ImageAboveText;
-            // 
-            // toolStripSeparator1
-            // 
-            toolStripSeparator1.Name = "toolStripSeparator1";
-            toolStripSeparator1.Size = new Size(6, 70);
             // 
             // LauncherForm
             // 

src/PolyTrader.Core/DependencyInjection/ServiceCollectionExtensions.cs

@@ -24,6 +24,10 @@ namespace PolyTrader.Core.DependencyInjection
             services.AddSingleton<IPositionRepository, EfPositionRepository>();
             services.AddSingleton<ITradeLogRepository, EfTradeLogRepository>();
 
+            // S-0 (Supervisor-Konzept): Entscheidungsjournal + Order-Lifecycle-Events.
+            services.AddSingleton<IDecisionJournal, EfDecisionJournal>();
+            services.AddSingleton<IOrderEventLog, EfOrderEventLog>();
+
             return services;
         }
     }

src/PolyTrader.Core/Models/CopySignal.cs

@@ -2,6 +2,13 @@ namespace PolyTraderSharp.Models
 {
     public class CopySignal
     {
+        /// <summary>
+        /// Korrelations-ID (S-0, Supervisor-Konzept): verbindet dieses Signal mit allen daraus
+        /// entstehenden Entscheidungen (core_decision_journal), Orders (core_order_events) und
+        /// dem ClosedTrade. Wird bei Erzeugung automatisch vergeben.
+        /// </summary>
+        public string SignalId { get; set; } = Guid.NewGuid().ToString("N");
+
         public int SourceTradeId { get; set; }
         public int TraderId { get; set; }
         public string MarketSlug { get; set; } = string.Empty;

src/PolyTrader.Core/Models/DecisionRecord.cs

@@ -0,0 +1,96 @@
+using System;
+
+namespace PolyTraderSharp.Models
+{
+    /// <summary>Ausgang einer Handelsentscheidung im Entscheidungsjournal.</summary>
+    public enum TradeDecision
+    {
+        Executed,   // Aktion ausgeführt (Order platziert / Demo-Fill / Leiter gestartet)
+        Rejected,   // aktiv abgelehnt (Risk-/Plausibilitätsregel)
+        Skipped,    // bewusst übersprungen (z. B. ExitPending, Spam-Blockade, Modus)
+        Failed      // versucht, aber fehlgeschlagen (z. B. Order-Fehler)
+    }
+
+    /// <summary>
+    /// Strukturierter Grund einer Entscheidung (statt Freitext). Wird als STRING persistiert –
+    /// neue Werte können gefahrlos ergänzt werden. Die Codes decken die heutigen
+    /// TradeReasoning-/Reject-Stellen von Engine, Leiter und Monitor ab.
+    /// </summary>
+    public enum DecisionReason
+    {
+        None = 0,
+
+        // ----- Modus / Zustand -----
+        ModeInactive,               // Live-/Demo-Trading deaktiviert
+        SellOnlyModeBuyBlocked,     // SellOnly-Modus blockiert BUY
+        TraderInactive,             // Master nicht gefunden / inaktiv
+        AccountInactive,            // Account nicht gefunden / inaktiv
+
+        // ----- BUY-Pfad -----
+        MaxBuyPriceExceeded,        // Signalpreis über MaxBuyPrice
+        ExitPendingBuySkip,         // H3: SELL-Leiter aktiv – kein Zukauf
+        TimeWindowLimitReached,     // Zeitfenster-Budget (6h/24h/72h/None) erschöpft
+        MarketBudgetExhausted,      // PerMarket-Budget erschöpft
+        PerMasterLimitReached,      // PerMaster-Budget erschöpft
+        InsufficientBalance,        // verfügbares Guthaben reicht nicht
+        BelowPolymarketMinimum,     // Order unter Minimum (Shares/USDC)
+        MarketExpiredOrTooClose,    // EndDate-Filter
+        DuplicateOrPendingOrder,    // bereits offene/pending Order
+
+        // ----- SELL-Pfad -----
+        SellSpamBlock,              // SELL <20s nach letztem SELL
+        LadderAlreadyActive,        // Eskalationsleiter läuft bereits
+        PositionNotFound,           // keine passende Position im Portfolio
+        OwnershipMismatch,          // Position gehört anderem Trader (Safety)
+        PartialSellBelowThreshold,  // Teilverkauf unter Signifikanz-Schwelle
+        MasterPositionInconsistent, // Master hält laut Tracking 0 Shares
+        SyncGracePeriod,            // kein Tracking + Haltezeit < Schonfrist
+
+        // ----- Ausführung -----
+        OrderPlaced,                // Order erfolgreich platziert
+        OrderFailed,                // CLOB-Fehler beim Platzieren
+        DemoFilled,                 // Demo-Fill gebucht
+        DemoClosed,                 // Demo-Position geschlossen
+        LadderStarted,              // SELL-Leiter gestartet
+        LadderStartFailed,          // Leiter-Startorder fehlgeschlagen
+        LadderDustAbort,            // H4: Dust-Rest unter Minimum – Leiter beendet
+        ProfitTargetTriggered,      // Take-Profit hat Exit ausgelöst
+        SystemResolutionClose       // System-Close bei Marktauflösung (TraderId==0)
+    }
+
+    /// <summary>
+    /// Eine Zeile im Entscheidungsjournal (core_decision_journal): JEDE Handelsentscheidung –
+    /// ausgeführt, abgelehnt oder übersprungen – strukturiert und abfragbar. Grundlage für
+    /// Supervisor-Analysen („warum (nicht) gehandelt?") und Counterfactual-Auswertungen
+    /// (MarketSlug/EndDate sind dafür bewusst enthalten). Siehe docs/konzepte/KONZEPT-Modul-Supervisor.md.
+    /// </summary>
+    public class DecisionRecord
+    {
+        public long Id { get; set; }                        // DB-Autoincrement
+        public DateTime Timestamp { get; set; } = DateTime.UtcNow;
+
+        /// <summary>Korrelation: verbindet Signal → Entscheidungen → Orders → ClosedTrade.</summary>
+        public string SignalId { get; set; } = string.Empty;
+
+        public string ModuleName { get; set; } = string.Empty;
+        public int AccountId { get; set; }
+        public bool IsDemo { get; set; }
+        public int SourceTraderId { get; set; }
+
+        public string TokenId { get; set; } = string.Empty;
+        public string MarketSlug { get; set; } = string.Empty;   // counterfactual-ready
+        public string MarketQuestion { get; set; } = string.Empty;
+        public string Side { get; set; } = string.Empty;          // BUY/SELL
+        public decimal SignalPrice { get; set; }
+        public DateTime? MarketEndDate { get; set; }              // counterfactual-ready
+
+        public TradeDecision Decision { get; set; }
+        public DecisionReason Reason { get; set; }
+
+        /// <summary>Kompakte Kontext-Zahlen als JSON (Limitwerte, Budgets, berechnete Größen …).</summary>
+        public string ContextJson { get; set; } = string.Empty;
+
+        /// <summary>Menschlicher Begründungstext (wie bisher im Log).</summary>
+        public string Message { get; set; } = string.Empty;
+    }
+}

src/PolyTrader.Core/Models/OrderEventRecord.cs

@@ -0,0 +1,47 @@
+using System;
+
+namespace PolyTraderSharp.Models
+{
+    /// <summary>Art eines Order-Lifecycle-Ereignisses (als String persistiert – erweiterbar).</summary>
+    public enum OrderEventType
+    {
+        Placed,             // Order ans CLOB gesendet, Ergebnis in Response
+        PlaceFailed,        // Platzierung fehlgeschlagen
+        Cancelled,          // Order storniert (inkl. Grund in DetailsJson)
+        LadderStart,        // erste GTC-Order der SELL-Leiter
+        LadderStep,         // Nachpreisen eine Stufe tiefer
+        FloorHold,          // Floor erreicht, Order ruht
+        FloorReplaced,      // K1b: fehlende Floor-Order neu platziert
+        DustAbort,          // H4: Leiter wegen Dust-Rest beendet
+        StartupReconcileCancel, // K2: verwaiste Order beim Start storniert
+        StaleCleanupCancel  // Stale-Order-Cleanup hat storniert
+    }
+
+    /// <summary>
+    /// Ein Order-Lifecycle-Ereignis (core_order_events): Platzierungen, CLOB-Antworten, Cancels,
+    /// Leiter-Stufen – als Daten statt nur als Log. Zusammen mit dem Entscheidungsjournal ergibt das
+    /// die vollständige, rekonstruierbare Kette je Signal (Dossier).
+    /// </summary>
+    public class OrderEventRecord
+    {
+        public long Id { get; set; }                        // DB-Autoincrement
+        public DateTime Timestamp { get; set; } = DateTime.UtcNow;
+
+        public string SignalId { get; set; } = string.Empty;
+        public string ModuleName { get; set; } = string.Empty;
+        public int AccountId { get; set; }
+        public string TokenId { get; set; } = string.Empty;
+
+        public OrderEventType EventType { get; set; }
+        public string Side { get; set; } = string.Empty;    // BUY/SELL
+        public decimal Price { get; set; }
+        public decimal AmountUsd { get; set; }
+        public string OrderType { get; set; } = string.Empty; // GTC/GTD/FOK/MARKET
+
+        /// <summary>CLOB-Antwort ("OK" oder Fehlertext) bzw. Ergebnis der Aktion.</summary>
+        public string Response { get; set; } = string.Empty;
+
+        /// <summary>Zusatzkontext als kompaktes JSON (z. B. Leiter-Stufe, Floor, Timeout-Grund).</summary>
+        public string DetailsJson { get; set; } = string.Empty;
+    }
+}

src/PolyTrader.Core/Models/TradeRecord.cs

@@ -34,5 +34,8 @@ namespace PolyTraderSharp.Models
         public DateTime OpenedAt { get; set; }
         public DateTime ClosedAt { get; set; }
         public string ExitReason { get; set; } = string.Empty;
+
+        /// <summary>Korrelation zum Entscheidungsjournal/Order-Events (leer bei Alt-Daten).</summary>
+        public string SignalId { get; set; } = string.Empty;
     }
 }

src/PolyTrader.Core/Persistence/Ef/CoreDbContext.cs

@@ -17,6 +17,8 @@ namespace PolyTrader.Core.Persistence.Ef
         public DbSet<Position> Positions => Set<Position>();
         public DbSet<MarketData> Markets => Set<MarketData>();
         public DbSet<TradeRecord> TradeLog => Set<TradeRecord>();
+        public DbSet<DecisionRecord> DecisionJournal => Set<DecisionRecord>();
+        public DbSet<OrderEventRecord> OrderEvents => Set<OrderEventRecord>();
 
         protected override void OnModelCreating(ModelBuilder b)
         {
@@ -93,6 +95,52 @@ namespace PolyTrader.Core.Persistence.Ef
                 e.HasIndex(x => x.ClosedAt);
                 e.HasIndex(x => x.ModuleName);
                 e.HasIndex(x => x.AccountId);
+                e.Property(x => x.SignalId).HasMaxLength(40);   // Korrelation zum Entscheidungsjournal
+            });
+
+            // Entscheidungsjournal (S-0, Supervisor-Konzept): jede Handelsentscheidung strukturiert.
+            b.Entity<DecisionRecord>(e =>
+            {
+                e.ToTable("core_decision_journal");
+                e.HasKey(x => x.Id);
+                e.Property(x => x.Id).ValueGeneratedOnAdd();
+                e.Property(x => x.SignalId).HasMaxLength(40);
+                e.Property(x => x.ModuleName).HasMaxLength(64);
+                e.Property(x => x.TokenId).HasMaxLength(120);
+                e.Property(x => x.MarketSlug).HasMaxLength(300);
+                e.Property(x => x.MarketQuestion).HasMaxLength(1000);
+                e.Property(x => x.Side).HasMaxLength(10);
+                e.Property(x => x.SignalPrice).HasPrecision(18, 6);
+                // Enums als String: lesbar in der DB, gefahrlos erweiterbar.
+                e.Property(x => x.Decision).HasConversion<string>().HasMaxLength(20);
+                e.Property(x => x.Reason).HasConversion<string>().HasMaxLength(50);
+                e.Property(x => x.ContextJson).HasMaxLength(2000);
+                e.Property(x => x.Message).HasMaxLength(2000);
+                e.HasIndex(x => x.Timestamp);
+                e.HasIndex(x => x.SignalId);
+                e.HasIndex(x => new { x.AccountId, x.TokenId });
+                e.HasIndex(x => x.Reason);
+            });
+
+            // Order-Lifecycle-Events (S-0): Platzierungen/Antworten/Cancels/Leiter-Stufen als Daten.
+            b.Entity<OrderEventRecord>(e =>
+            {
+                e.ToTable("core_order_events");
+                e.HasKey(x => x.Id);
+                e.Property(x => x.Id).ValueGeneratedOnAdd();
+                e.Property(x => x.SignalId).HasMaxLength(40);
+                e.Property(x => x.ModuleName).HasMaxLength(64);
+                e.Property(x => x.TokenId).HasMaxLength(120);
+                e.Property(x => x.EventType).HasConversion<string>().HasMaxLength(30);
+                e.Property(x => x.Side).HasMaxLength(10);
+                e.Property(x => x.Price).HasPrecision(18, 6);
+                e.Property(x => x.AmountUsd).HasPrecision(18, 6);
+                e.Property(x => x.OrderType).HasMaxLength(10);
+                e.Property(x => x.Response).HasMaxLength(1000);
+                e.Property(x => x.DetailsJson).HasMaxLength(2000);
+                e.HasIndex(x => x.Timestamp);
+                e.HasIndex(x => x.SignalId);
+                e.HasIndex(x => new { x.AccountId, x.TokenId });
             });
         }
     }

src/PolyTrader.Core/Persistence/Ef/EfAnalysisJournals.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using Microsoft.EntityFrameworkCore;
+using PolyTraderSharp.Models;
+
+namespace PolyTrader.Core.Persistence.Ef
+{
+    /// <summary>
+    /// EF-Implementierung des Entscheidungsjournals. Write ist bewusst fehlertolerant:
+    /// ein Journal-/DB-Fehler darf den Geld-Pfad (Engine/Leiter) niemals brechen –
+    /// er wird auf der Konsole gemeldet und verworfen.
+    /// </summary>
+    public class EfDecisionJournal : IDecisionJournal
+    {
+        private readonly IDbContextFactory<CoreDbContext> _factory;
+        public EfDecisionJournal(IDbContextFactory<CoreDbContext> factory) => _factory = factory;
+
+        public void Write(DecisionRecord record)
+        {
+            try
+            {
+                using var ctx = _factory.CreateDbContext();
+                ctx.DecisionJournal.Add(record);
+                ctx.SaveChanges();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[DecisionJournal] Write fehlgeschlagen (ignoriert): {ex.Message}");
+            }
+        }
+
+        public List<DecisionRecord> Query(Expression<Func<DecisionRecord, bool>> predicate, int limit = 1000)
+        {
+            using var ctx = _factory.CreateDbContext();
+            return ctx.DecisionJournal.AsNoTracking()
+                .Where(predicate)
+                .OrderByDescending(r => r.Timestamp)
+                .Take(limit)
+                .ToList();
+        }
+    }
+
+    /// <summary>EF-Implementierung des Order-Lifecycle-Logs (gleiche Robustheits-Garantie).</summary>
+    public class EfOrderEventLog : IOrderEventLog
+    {
+        private readonly IDbContextFactory<CoreDbContext> _factory;
+        public EfOrderEventLog(IDbContextFactory<CoreDbContext> factory) => _factory = factory;
+
+        public void Write(OrderEventRecord record)
+        {
+            try
+            {
+                using var ctx = _factory.CreateDbContext();
+                ctx.OrderEvents.Add(record);
+                ctx.SaveChanges();
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[OrderEventLog] Write fehlgeschlagen (ignoriert): {ex.Message}");
+            }
+        }
+
+        public List<OrderEventRecord> Query(Expression<Func<OrderEventRecord, bool>> predicate, int limit = 1000)
+        {
+            using var ctx = _factory.CreateDbContext();
+            return ctx.OrderEvents.AsNoTracking()
+                .Where(predicate)
+                .OrderByDescending(r => r.Timestamp)
+                .Take(limit)
+                .ToList();
+        }
+    }
+}

src/PolyTrader.Core/Persistence/Ef/Migrations/20260716101647_AddDecisionJournalAndOrderEvents.Designer.cs

@@ -0,0 +1,481 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using PolyTrader.Core.Persistence.Ef;
+
+#nullable disable
+
+namespace PolyTrader.Core.Persistence.Ef.Migrations
+{
+    [DbContext(typeof(CoreDbContext))]
+    [Migration("20260716101647_AddDecisionJournalAndOrderEvents")]
+    partial class AddDecisionJournalAndOrderEvents
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.13")
+                .HasAnnotation("Relational:MaxIdentifierLength", 64);
+
+            MySqlModelBuilderExtensions.AutoIncrementColumns(modelBuilder);
+
+            modelBuilder.Entity("PolyTraderSharp.Models.AccountState", b =>
+                {
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("ApiKey")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("varchar(256)");
+
+                    b.Property<string>("ApiPassphrase")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("varchar(512)");
+
+                    b.Property<string>("ApiSecret")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("varchar(512)");
+
+                    b.Property<decimal>("AvailableBalance")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<bool>("CloseOnlyMode")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<bool>("HasOpenLimitOrders")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<bool>("IsDemo")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<string>("PayoutAddress")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("varchar(128)");
+
+                    b.Property<decimal>("PayoutLimitUsd")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("PrivateKey")
+                        .IsRequired()
+                        .HasMaxLength(512)
+                        .HasColumnType("varchar(512)");
+
+                    b.Property<decimal>("TotalBalance")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("WalletAddress")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("varchar(128)");
+
+                    b.HasKey("AccountId");
+
+                    b.ToTable("core_accounts", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.DecisionRecord", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<long>("Id"));
+
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("ContextJson")
+                        .IsRequired()
+                        .HasMaxLength(2000)
+                        .HasColumnType("varchar(2000)");
+
+                    b.Property<string>("Decision")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("varchar(20)");
+
+                    b.Property<bool>("IsDemo")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<DateTime?>("MarketEndDate")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("MarketQuestion")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("MarketSlug")
+                        .IsRequired()
+                        .HasMaxLength(300)
+                        .HasColumnType("varchar(300)");
+
+                    b.Property<string>("Message")
+                        .IsRequired()
+                        .HasMaxLength(2000)
+                        .HasColumnType("varchar(2000)");
+
+                    b.Property<string>("ModuleName")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<string>("Reason")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("varchar(50)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
+                    b.Property<decimal>("SignalPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<int>("SourceTraderId")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("Timestamp")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Reason");
+
+                    b.HasIndex("SignalId");
+
+                    b.HasIndex("Timestamp");
+
+                    b.HasIndex("AccountId", "TokenId");
+
+                    b.ToTable("core_decision_journal", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.MarketData", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.Property<bool>("Active")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("Category")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<string>("ClobTokenIds")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("Closed")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("ConditionId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.Property<DateTime?>("EndDate")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<bool>("NegRisk")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("Outcomes")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Question")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("Slug")
+                        .IsRequired()
+                        .HasMaxLength(300)
+                        .HasColumnType("varchar(300)");
+
+                    b.Property<int>("TakerFeeBps")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("core_markets", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.OrderEventRecord", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<long>("Id"));
+
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("AmountUsd")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("DetailsJson")
+                        .IsRequired()
+                        .HasMaxLength(2000)
+                        .HasColumnType("varchar(2000)");
+
+                    b.Property<string>("EventType")
+                        .IsRequired()
+                        .HasMaxLength(30)
+                        .HasColumnType("varchar(30)");
+
+                    b.Property<string>("ModuleName")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<string>("OrderType")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<decimal>("Price")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("Response")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
+                    b.Property<DateTime>("Timestamp")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SignalId");
+
+                    b.HasIndex("Timestamp");
+
+                    b.HasIndex("AccountId", "TokenId");
+
+                    b.ToTable("core_order_events", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.Position", b =>
+                {
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<bool>("IsDemo")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("TokenId")
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.Property<decimal>("AmountUsd")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("ConditionId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.Property<decimal>("CurrentPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("CurrentValueUsd")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("EntryPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<DateTime?>("ExpiryDate")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("MarketQuestion")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("MarketSlug")
+                        .IsRequired()
+                        .HasMaxLength(300)
+                        .HasColumnType("varchar(300)");
+
+                    b.Property<DateTime>("OpenedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("Outcome")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<decimal>("Size")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("SourceTraderAddress")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("varchar(128)");
+
+                    b.Property<int>("SourceTraderId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("SourceTraderName")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.HasKey("AccountId", "IsDemo", "TokenId");
+
+                    b.ToTable("core_positions", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.TradeRecord", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("ClosedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<decimal>("EntryPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("ExitPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("ExitReason")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<bool>("IsDemo")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("MarketQuestion")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("ModuleName")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<DateTime>("OpenedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("Outcome")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<decimal>("PnlPercent")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("RealizedPnl")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
+                    b.Property<decimal>("Size")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AccountId");
+
+                    b.HasIndex("ClosedAt");
+
+                    b.HasIndex("ModuleName");
+
+                    b.ToTable("core_trade_log", (string)null);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

src/PolyTrader.Core/Persistence/Ef/Migrations/20260716101647_AddDecisionJournalAndOrderEvents.cs

@@ -0,0 +1,146 @@
+using System;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace PolyTrader.Core.Persistence.Ef.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddDecisionJournalAndOrderEvents : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "SignalId",
+                table: "core_trade_log",
+                type: "varchar(40)",
+                maxLength: 40,
+                nullable: false,
+                defaultValue: "")
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateTable(
+                name: "core_decision_journal",
+                columns: table => new
+                {
+                    Id = table.Column<long>(type: "bigint", nullable: false)
+                        .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    Timestamp = table.Column<DateTime>(type: "datetime(6)", nullable: false),
+                    SignalId = table.Column<string>(type: "varchar(40)", maxLength: 40, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    ModuleName = table.Column<string>(type: "varchar(64)", maxLength: 64, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    AccountId = table.Column<int>(type: "int", nullable: false),
+                    IsDemo = table.Column<bool>(type: "tinyint(1)", nullable: false),
+                    SourceTraderId = table.Column<int>(type: "int", nullable: false),
+                    TokenId = table.Column<string>(type: "varchar(120)", maxLength: 120, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    MarketSlug = table.Column<string>(type: "varchar(300)", maxLength: 300, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    MarketQuestion = table.Column<string>(type: "varchar(1000)", maxLength: 1000, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    Side = table.Column<string>(type: "varchar(10)", maxLength: 10, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    SignalPrice = table.Column<decimal>(type: "decimal(18,6)", precision: 18, scale: 6, nullable: false),
+                    MarketEndDate = table.Column<DateTime>(type: "datetime(6)", nullable: true),
+                    Decision = table.Column<string>(type: "varchar(20)", maxLength: 20, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    Reason = table.Column<string>(type: "varchar(50)", maxLength: 50, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    ContextJson = table.Column<string>(type: "varchar(2000)", maxLength: 2000, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    Message = table.Column<string>(type: "varchar(2000)", maxLength: 2000, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_core_decision_journal", x => x.Id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateTable(
+                name: "core_order_events",
+                columns: table => new
+                {
+                    Id = table.Column<long>(type: "bigint", nullable: false)
+                        .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    Timestamp = table.Column<DateTime>(type: "datetime(6)", nullable: false),
+                    SignalId = table.Column<string>(type: "varchar(40)", maxLength: 40, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    ModuleName = table.Column<string>(type: "varchar(64)", maxLength: 64, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    AccountId = table.Column<int>(type: "int", nullable: false),
+                    TokenId = table.Column<string>(type: "varchar(120)", maxLength: 120, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    EventType = table.Column<string>(type: "varchar(30)", maxLength: 30, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    Side = table.Column<string>(type: "varchar(10)", maxLength: 10, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    Price = table.Column<decimal>(type: "decimal(18,6)", precision: 18, scale: 6, nullable: false),
+                    AmountUsd = table.Column<decimal>(type: "decimal(18,6)", precision: 18, scale: 6, nullable: false),
+                    OrderType = table.Column<string>(type: "varchar(10)", maxLength: 10, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    Response = table.Column<string>(type: "varchar(1000)", maxLength: 1000, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    DetailsJson = table.Column<string>(type: "varchar(2000)", maxLength: 2000, nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_core_order_events", x => x.Id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_decision_journal_AccountId_TokenId",
+                table: "core_decision_journal",
+                columns: new[] { "AccountId", "TokenId" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_decision_journal_Reason",
+                table: "core_decision_journal",
+                column: "Reason");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_decision_journal_SignalId",
+                table: "core_decision_journal",
+                column: "SignalId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_decision_journal_Timestamp",
+                table: "core_decision_journal",
+                column: "Timestamp");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_order_events_AccountId_TokenId",
+                table: "core_order_events",
+                columns: new[] { "AccountId", "TokenId" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_order_events_SignalId",
+                table: "core_order_events",
+                column: "SignalId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_core_order_events_Timestamp",
+                table: "core_order_events",
+                column: "Timestamp");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "core_decision_journal");
+
+            migrationBuilder.DropTable(
+                name: "core_order_events");
+
+            migrationBuilder.DropColumn(
+                name: "SignalId",
+                table: "core_trade_log");
+        }
+    }
+}

src/PolyTrader.Core/Persistence/Ef/Migrations/CoreDbContextModelSnapshot.cs

@@ -91,6 +91,96 @@ namespace PolyTrader.Core.Persistence.Ef.Migrations
                     b.ToTable("core_accounts", (string)null);
                 });
 
+            modelBuilder.Entity("PolyTraderSharp.Models.DecisionRecord", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<long>("Id"));
+
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("ContextJson")
+                        .IsRequired()
+                        .HasMaxLength(2000)
+                        .HasColumnType("varchar(2000)");
+
+                    b.Property<string>("Decision")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("varchar(20)");
+
+                    b.Property<bool>("IsDemo")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<DateTime?>("MarketEndDate")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("MarketQuestion")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("MarketSlug")
+                        .IsRequired()
+                        .HasMaxLength(300)
+                        .HasColumnType("varchar(300)");
+
+                    b.Property<string>("Message")
+                        .IsRequired()
+                        .HasMaxLength(2000)
+                        .HasColumnType("varchar(2000)");
+
+                    b.Property<string>("ModuleName")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<string>("Reason")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("varchar(50)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
+                    b.Property<decimal>("SignalPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<int>("SourceTraderId")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("Timestamp")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Reason");
+
+                    b.HasIndex("SignalId");
+
+                    b.HasIndex("Timestamp");
+
+                    b.HasIndex("AccountId", "TokenId");
+
+                    b.ToTable("core_decision_journal", (string)null);
+                });
+
             modelBuilder.Entity("PolyTraderSharp.Models.MarketData", b =>
                 {
                     b.Property<string>("Id")
@@ -145,6 +235,79 @@ namespace PolyTrader.Core.Persistence.Ef.Migrations
                     b.ToTable("core_markets", (string)null);
                 });
 
+            modelBuilder.Entity("PolyTraderSharp.Models.OrderEventRecord", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    MySqlPropertyBuilderExtensions.UseMySqlIdentityColumn(b.Property<long>("Id"));
+
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("AmountUsd")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("DetailsJson")
+                        .IsRequired()
+                        .HasMaxLength(2000)
+                        .HasColumnType("varchar(2000)");
+
+                    b.Property<string>("EventType")
+                        .IsRequired()
+                        .HasMaxLength(30)
+                        .HasColumnType("varchar(30)");
+
+                    b.Property<string>("ModuleName")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<string>("OrderType")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<decimal>("Price")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("Response")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
+                    b.Property<DateTime>("Timestamp")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SignalId");
+
+                    b.HasIndex("Timestamp");
+
+                    b.HasIndex("AccountId", "TokenId");
+
+                    b.ToTable("core_order_events", (string)null);
+                });
+
             modelBuilder.Entity("PolyTraderSharp.Models.Position", b =>
                 {
                     b.Property<int>("AccountId")
@@ -285,6 +448,11 @@ namespace PolyTrader.Core.Persistence.Ef.Migrations
                         .HasMaxLength(10)
                         .HasColumnType("varchar(10)");
 
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
                     b.Property<decimal>("Size")
                         .HasPrecision(18, 6)
                         .HasColumnType("decimal(18,6)");

src/PolyTrader.Core/Persistence/IAnalysisJournals.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using PolyTraderSharp.Models;
+
+namespace PolyTrader.Core.Persistence
+{
+    /// <summary>
+    /// Entscheidungsjournal (core_decision_journal). Write darf den Trading-Pfad NIEMALS brechen –
+    /// Implementierungen fangen Persistenzfehler ab (Log statt Exception).
+    /// </summary>
+    public interface IDecisionJournal
+    {
+        void Write(DecisionRecord record);
+        List<DecisionRecord> Query(Expression<Func<DecisionRecord, bool>> predicate, int limit = 1000);
+    }
+
+    /// <summary>Order-Lifecycle-Log (core_order_events). Gleiche Robustheits-Garantie wie das Journal.</summary>
+    public interface IOrderEventLog
+    {
+        void Write(OrderEventRecord record);
+        List<OrderEventRecord> Query(Expression<Func<OrderEventRecord, bool>> predicate, int limit = 1000);
+    }
+}

src/PolyTrader.Core/Services/TerminalLogger.cs

@@ -13,11 +13,39 @@ namespace PolyTraderSharp.Services
         public LogLevel Level { get; }
         public DateTime Timestamp { get; }
 
-        public LogMessageEventArgs(string message, LogLevel level)
+        /// <summary>Korrelations-ID (z. B. SignalId) für die Log-Forensik; leer wenn ohne Kontext.</summary>
+        public string CorrelationId { get; }
+
+        public LogMessageEventArgs(string message, LogLevel level, string correlationId = "")
         {
             Message = message;
             Level = level;
             Timestamp = DateTime.Now;
+            CorrelationId = correlationId ?? "";
+        }
+    }
+
+    /// <summary>
+    /// Reiner JSONL-Formatter für Log-Events (S-0, Supervisor-Konzept): eine JSON-Zeile je Event –
+    /// append-fähig, streambar, maschinen-/KI-lesbar. Statisch und seiteneffektfrei → unit-getestet.
+    /// </summary>
+    public static class LogJson
+    {
+        public static string Format(LogMessageEventArgs e)
+        {
+            var obj = new
+            {
+                ts = e.Timestamp.ToString("yyyy-MM-ddTHH:mm:ss.fffzzz"),
+                level = e.Level.ToString(),
+                cid = string.IsNullOrEmpty(e.CorrelationId) ? null : e.CorrelationId,
+                msg = e.Message
+            };
+            return System.Text.Json.JsonSerializer.Serialize(obj,
+                new System.Text.Json.JsonSerializerOptions
+                {
+                    Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping,
+                    DefaultIgnoreCondition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull
+                });
         }
     }
 
@@ -62,6 +90,11 @@ namespace PolyTraderSharp.Services
                     string logLine = $"[{e.Timestamp:HH:mm:ss}] {safeMsg}{Environment.NewLine}";
 
                     await File.AppendAllTextAsync(fullPath, logLine);
+
+                    // S-0: zusätzlich JSONL (eine Datei je Tag, alle Level) – maschinen-/KI-lesbar,
+                    // Grundlage für den Log Viewer. Dual-Sink; Text-Sink später abschaltbar.
+                    string jsonlPath = Path.Combine(_logsDirectory, $"{e.Timestamp:yyyy-MM-dd}.jsonl");
+                    await File.AppendAllTextAsync(jsonlPath, LogJson.Format(e) + Environment.NewLine);
                 }
                 catch
                 {
@@ -70,9 +103,9 @@ namespace PolyTraderSharp.Services
             }
         }
 
-        public void Log(string message, LogLevel level = LogLevel.Info)
+        public void Log(string message, LogLevel level = LogLevel.Info, string correlationId = "")
         {
-            var e = new LogMessageEventArgs(message, level);
+            var e = new LogMessageEventArgs(message, level, correlationId);
             lock (_lock)
             {
                 _history.Add(e);

src/PolyTrader.Modules.CopyTrading/CopyTradingState.cs

@@ -76,6 +76,9 @@ namespace PolyTraderSharp
         public int AccountId { get; set; }
         public string TokenId { get; set; } = string.Empty;
         public int SourceTraderId { get; set; }
+
+        /// <summary>Korrelation zum auslösenden Signal (leer bei Profit-Target-Exits).</summary>
+        public string SignalId { get; set; } = string.Empty;
         public string MarketQuestion { get; set; } = string.Empty;
 
         public decimal ReferencePrice { get; set; }   // Master-Exit-Preis

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

@@ -24,6 +24,9 @@ namespace PolyTraderSharp.Models
         public DateTime OpenedAt { get; set; }
         public DateTime ClosedAt { get; set; }
         public string ExitReason { get; set; } = string.Empty;
+
+        /// <summary>Korrelation zum Entscheidungsjournal/Order-Events (leer bei Alt-Daten/System-Closes).</summary>
+        public string SignalId { get; set; } = string.Empty;
     }
     public class ClosedTradeRow : ClosedTrade
     {

src/PolyTrader.Modules.CopyTrading/Persistence/Ef/CopyTradingDbContext.cs

@@ -42,6 +42,7 @@ namespace PolyTrader.Modules.CopyTrading.Persistence.Ef
                 e.Property(x => x.RealizedPnl).HasPrecision(18, 6);
                 e.Property(x => x.PnlPercent).HasPrecision(18, 6);
                 e.Property(x => x.TotalFees).HasPrecision(18, 6);
+                e.Property(x => x.SignalId).HasMaxLength(40);   // Korrelation zum Entscheidungsjournal
                 e.HasIndex(x => x.AccountId);
                 e.HasIndex(x => x.TokenId);
                 e.HasIndex(x => x.SourceTraderId);

src/PolyTrader.Modules.CopyTrading/Persistence/Ef/CopyTradingDbContextFactory.cs

@@ -1,12 +1,14 @@
 using System;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Design;
+using PolyTrader.Core.Configuration;
 
 namespace PolyTrader.Modules.CopyTrading.Persistence.Ef
 {
     /// <summary>
     /// Design-Time-Factory für EF-Tooling. Connection über Umgebungsvariable POLYTRADER_MYSQL
-    /// (keine Zugangsdaten im Code/Repo).
+    /// (keine Zugangsdaten im Code/Repo). Nutzt die fest gepinnte Server-Version (statt AutoDetect),
+    /// damit Migrations-Scaffolding OHNE DB-Verbindung funktioniert.
     /// </summary>
     public class CopyTradingDbContextFactory : IDesignTimeDbContextFactory<CopyTradingDbContext>
     {
@@ -16,7 +18,7 @@ namespace PolyTrader.Modules.CopyTrading.Persistence.Ef
                 ?? "Server=localhost;Port=3306;Database=polytrader;User ID=root;Password=;";
 
             var options = new DbContextOptionsBuilder<CopyTradingDbContext>()
-                .UseMySql(conn, ServerVersion.AutoDetect(conn))
+                .UseMySql(conn, DatabaseServerVersion.Value)
                 .Options;
 
             return new CopyTradingDbContext(options);

src/PolyTrader.Modules.CopyTrading/Persistence/Ef/Migrations/20260716101729_AddClosedTradeSignalId.Designer.cs

@@ -0,0 +1,290 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using PolyTrader.Modules.CopyTrading.Persistence.Ef;
+
+#nullable disable
+
+namespace PolyTrader.Modules.CopyTrading.Persistence.Ef.Migrations
+{
+    [DbContext(typeof(CopyTradingDbContext))]
+    [Migration("20260716101729_AddClosedTradeSignalId")]
+    partial class AddClosedTradeSignalId
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.13")
+                .HasAnnotation("Relational:MaxIdentifierLength", 64);
+
+            MySqlModelBuilderExtensions.AutoIncrementColumns(modelBuilder);
+
+            modelBuilder.Entity("PolyTraderSharp.Models.ClosedTrade", b =>
+                {
+                    b.Property<int>("TradeId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("ClosedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<decimal>("EntryPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("ExitPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("ExitReason")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<bool>("IsDemo")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("MarketQuestion")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("MarketSlug")
+                        .IsRequired()
+                        .HasMaxLength(300)
+                        .HasColumnType("varchar(300)");
+
+                    b.Property<DateTime>("OpenedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<string>("Outcome")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<decimal>("PnlPercent")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("RealizedPnl")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("Side")
+                        .IsRequired()
+                        .HasMaxLength(10)
+                        .HasColumnType("varchar(10)");
+
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
+                    b.Property<decimal>("Size")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<int>("SourceTraderId")
+                        .HasColumnType("int");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.Property<decimal>("TotalFees")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.HasKey("TradeId");
+
+                    b.HasIndex("AccountId");
+
+                    b.HasIndex("SourceTraderId");
+
+                    b.HasIndex("TokenId");
+
+                    b.ToTable("mod_copytrading_closed_trades", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.CopyTradingAccountSettings", b =>
+                {
+                    b.Property<int>("AccountId")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("MaxBuyPrice")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("MaxPriceDifference")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("MaxSpreadPct")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("MinSellRatioPct")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("PerMarketLimit")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("PerMasterLimit")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("PreRedeemLimit")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("ProfitTarget")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("SellFloorPct")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("perMaxTime24h")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("perMaxTime6h")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("perMaxTime72h")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("perMaxTimeNone")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.HasKey("AccountId");
+
+                    b.ToTable("mod_copytrading_account_settings", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.MasterTraderHistoryRecord", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<DateTime>("ClosedAt")
+                        .HasColumnType("datetime(6)");
+
+                    b.Property<decimal>("RealizedPnl")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<string>("TokenId")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("varchar(120)");
+
+                    b.Property<int>("TraderId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ClosedAt");
+
+                    b.HasIndex("TraderId");
+
+                    b.ToTable("mod_copytrading_mt_history", (string)null);
+                });
+
+            modelBuilder.Entity("PolyTraderSharp.Models.TrackedTrader", b =>
+                {
+                    b.Property<int>("Id")
+                        .HasColumnType("int");
+
+                    b.Property<string>("AssignedAccountIds")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("AutoPauseEnabled")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("Category")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("varchar(64)");
+
+                    b.Property<decimal>("CopyAvgPnlPerTrade")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("CopyPnl30d")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<decimal>("CopyProfitFactor")
+                        .HasPrecision(18, 6)
+                        .HasColumnType("decimal(18,6)");
+
+                    b.Property<int>("CopyTradeCount30d")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<string>("DisplayName")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("varchar(200)");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<bool>("IsHidden")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<bool>("MakerEntry")
+                        .HasColumnType("tinyint(1)");
+
+                    b.Property<string>("Reasoning")
+                        .IsRequired()
+                        .HasMaxLength(1000)
+                        .HasColumnType("varchar(1000)");
+
+                    b.Property<double>("TotalPnl")
+                        .HasColumnType("double");
+
+                    b.Property<int>("TotalTrades")
+                        .HasColumnType("int");
+
+                    b.Property<string>("WalletAddress")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("varchar(128)");
+
+                    b.Property<int>("WinningTrades")
+                        .HasColumnType("int");
+
+                    b.Property<double>("Winrate30t")
+                        .HasColumnType("double");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("mod_copytrading_traders", (string)null);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

src/PolyTrader.Modules.CopyTrading/Persistence/Ef/Migrations/20260716101729_AddClosedTradeSignalId.cs

@@ -0,0 +1,31 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace PolyTrader.Modules.CopyTrading.Persistence.Ef.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddClosedTradeSignalId : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "SignalId",
+                table: "mod_copytrading_closed_trades",
+                type: "varchar(40)",
+                maxLength: 40,
+                nullable: false,
+                defaultValue: "")
+                .Annotation("MySql:CharSet", "utf8mb4");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "SignalId",
+                table: "mod_copytrading_closed_trades");
+        }
+    }
+}

src/PolyTrader.Modules.CopyTrading/Persistence/Ef/Migrations/CopyTradingDbContextModelSnapshot.cs

@@ -80,6 +80,11 @@ namespace PolyTrader.Modules.CopyTrading.Persistence.Ef.Migrations
                         .HasMaxLength(10)
                         .HasColumnType("varchar(10)");
 
+                    b.Property<string>("SignalId")
+                        .IsRequired()
+                        .HasMaxLength(40)
+                        .HasColumnType("varchar(40)");
+
                     b.Property<decimal>("Size")
                         .HasPrecision(18, 6)
                         .HasColumnType("decimal(18,6)");

src/PolyTrader.Modules.CopyTrading/Services/CopyTradingEngine.cs

@@ -26,6 +26,8 @@ namespace PolyTraderSharp.Services
         private readonly IMarketRepository _marketRepo;
         private readonly IAccountRepository _accountRepo;
         private readonly SellLadderService _sellLadder;
+        private readonly IDecisionJournal _journal;
+        private readonly IOrderEventLog _orderEvents;
         private readonly ConcurrentDictionary<int, SemaphoreSlim> _accountSemaphores = new();
         private readonly ConcurrentDictionary<int, DateTime> _lastInactiveLogPerTrader = new();
 
@@ -40,7 +42,9 @@ namespace PolyTraderSharp.Services
             IPositionRepository positionRepo,
             IMarketRepository marketRepo,
             IAccountRepository accountRepo,
-            SellLadderService sellLadder)
+            SellLadderService sellLadder,
+            IDecisionJournal journal,
+            IOrderEventLog orderEvents)
         {
             _state = state;
             _copyState = copyState;
@@ -53,6 +57,39 @@ namespace PolyTraderSharp.Services
             _marketRepo = marketRepo;
             _accountRepo = accountRepo;
             _sellLadder = sellLadder;
+            _journal = journal;
+            _orderEvents = orderEvents;
+        }
+
+        /// <summary>
+        /// S-0 (Supervisor): schreibt eine Entscheidung strukturiert ins Journal (core_decision_journal).
+        /// Ergänzt die bestehenden Freitext-Logs, ersetzt sie nicht. Darf den Trading-Pfad nie brechen
+        /// (Robustheit in der Journal-Implementierung).
+        /// </summary>
+        /// <summary>Kompakter Kontext als JSON (kulturinvariant – kein deutsches Dezimalkomma).</summary>
+        private static string Ctx(object o) => System.Text.Json.JsonSerializer.Serialize(o);
+
+        private void Journal(CopySignal signal, AccountState? account, TradeDecision decision,
+            DecisionReason reason, string message, string contextJson = "")
+        {
+            _journal.Write(new DecisionRecord
+            {
+                SignalId = signal.SignalId,
+                ModuleName = "CopyTrading",
+                AccountId = account?.AccountId ?? 0,
+                IsDemo = account?.IsDemo ?? false,
+                SourceTraderId = signal.TraderId,
+                TokenId = signal.TokenId,
+                MarketSlug = signal.MarketSlug,
+                MarketQuestion = signal.MarketQuestion,
+                Side = signal.Side,
+                SignalPrice = signal.Price,
+                MarketEndDate = signal.EndDate,
+                Decision = decision,
+                Reason = reason,
+                Message = message,
+                ContextJson = contextJson
+            });
         }
 
         public override async Task StartAsync(CancellationToken cancellationToken)
@@ -238,6 +275,8 @@ namespace PolyTraderSharp.Services
                     _logger.TradeReasoning($"⏸️ Trade {signal.Side} [{signal.MarketQuestion}] [{(string.IsNullOrEmpty(signal.Outcome) ? signal.Side : signal.Outcome)}] ignoriert:\n" +
                                            $"   Konto:      {account.Name}\n" +
                                            $"   Begründung: {modeLabel}-Trading Modus ist 'Inactive'. Weitere Trades dieses Traders werden für 60s nicht geloggt.");
+                    Journal(signal, account, TradeDecision.Skipped, DecisionReason.ModeInactive,
+                        $"{modeLabel}-Trading 'Inactive' (Journal ratenbegrenzt wie das Log: 1/60s je Trader)");
                 }
                 return;
             }
@@ -248,6 +287,7 @@ namespace PolyTraderSharp.Services
                 _logger.TradeReasoning($"⏸️ Trade BUY [{signal.MarketQuestion}] [{(string.IsNullOrEmpty(signal.Outcome) ? signal.Side : signal.Outcome)}] ignoriert:\n" +
                                        $"   Konto:      {account.Name}\n" +
                                        $"   Begründung: Trading Modus ist 'SellOnly' — BUY-Trades werden nicht kopiert.");
+                Journal(signal, account, TradeDecision.Skipped, DecisionReason.SellOnlyModeBuyBlocked, "SellOnly-Modus blockiert BUY");
                 return;
             }
 
@@ -302,6 +342,7 @@ namespace PolyTraderSharp.Services
                         _logger.TradeReasoning($"⏸️ Trade BUY [{signal.MarketQuestion}] [{shareType}] übersprungen:\n" +
                                                $"   Konto:      {account.Name}\n" +
                                                $"   Begründung: SELL-Eskalationsleiter läuft (Exit aktiv) – kein Zukauf während des Ausstiegs.");
+                        Journal(signal, account, TradeDecision.Skipped, DecisionReason.ExitPendingBuySkip, "SELL-Leiter aktiv – kein Zukauf (H3)");
                         return;
                     }
 
@@ -310,6 +351,9 @@ namespace PolyTraderSharp.Services
                         _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] verworfen (Risk Limit):\n" +
                                                $"   Konto:      {account.Name}\n" +
                                                $"   Begründung: Preis (${signal.Price:F3}) übersteigt das MaxBuy Limit (${settings.MaxBuyPrice:F3})");
+                        Journal(signal, account, TradeDecision.Rejected, DecisionReason.MaxBuyPriceExceeded,
+                            $"Preis {signal.Price:F3} > MaxBuyPrice {settings.MaxBuyPrice:F3}",
+                            Ctx(new { price = signal.Price, maxBuyPrice = settings.MaxBuyPrice }));
                         return;
                     }
 
@@ -345,6 +389,9 @@ namespace PolyTraderSharp.Services
                             _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] verworfen:\n" +
                                                    $"   Konto:      {account.Name}\n" +
                                                    $"   Begründung: PerMasterLimit ({settings.PerMasterLimit:F1}%) erreicht. Bisher investiert in '{trader.DisplayName}': ${investedInMaster:F2} ({pctInvested:F1}%).");
+                            Journal(signal, account, TradeDecision.Rejected, DecisionReason.PerMasterLimitReached,
+                                $"PerMasterLimit {settings.PerMasterLimit:F1}% erreicht",
+                                Ctx(new { investedInMaster, maxAllowedPerMaster, perMasterLimitPct = settings.PerMasterLimit }));
                             return;
                         }
 
@@ -368,6 +415,9 @@ namespace PolyTraderSharp.Services
                                 _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] verworfen:\n" +
                                                        $"   Konto:      {account.Name}\n" +
                                                        $"   Begründung: TimeLimit '{timeframeLabel}' ({applicableTimeLimitPct:F1}%) erreicht. Bisher investiert: ${investedInTimeframe:F2} / max. ${maxAllowedTimeframe:F2}");
+                                Journal(signal, account, TradeDecision.Rejected, DecisionReason.TimeWindowLimitReached,
+                                    $"TimeLimit '{timeframeLabel}' ({applicableTimeLimitPct:F1}%) erreicht",
+                                    Ctx(new { bucket = timeframeLabel, investedInTimeframe, maxAllowedTimeframe, hoursLeft }));
                                 return;
                             }
                             else
@@ -381,6 +431,9 @@ namespace PolyTraderSharp.Services
                             _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] verworfen:\n" +
                                                    $"   Konto:      {account.Name}\n" +
                                                    $"   Begründung: Kauflimit (${maxAllowed:F2}) bereits in Markt investiert (${investedInMarket:F2}). Rest: ${maxAmountToBuy:F2} < MinTrade (${minTrade:F2})");
+                            Journal(signal, account, TradeDecision.Rejected, DecisionReason.MarketBudgetExhausted,
+                                $"Markt-Budget erschöpft (Rest {maxAmountToBuy:F2} < MinTrade)",
+                                Ctx(new { maxAllowed, investedInMarket, remaining = maxAmountToBuy, minTrade }));
                             return;
                         }
 
@@ -389,6 +442,9 @@ namespace PolyTraderSharp.Services
                             _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] verworfen:\n" +
                                                    $"   Konto:      {account.Name}\n" +
                                                    $"   Begründung: Kontostand (${account.AvailableBalance:F2}) nicht ausreichend für errechnetes Size (${maxAmountToBuy:F2})");
+                            Journal(signal, account, TradeDecision.Rejected, DecisionReason.InsufficientBalance,
+                                "Verfügbares Guthaben reicht nicht",
+                                Ctx(new { availableBalance = account.AvailableBalance, requested = maxAmountToBuy }));
                             return;
                         }
 
@@ -406,6 +462,9 @@ namespace PolyTraderSharp.Services
                         {
                             _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] gestoppt:\n" +
                                                    $"   Begründung: Mathematisch unmöglicher Trade ({exact.shares} Shares für ${exact.usdc:F2}). Kontostand (${account.AvailableBalance:F2}) reicht für Minimum nicht aus.");
+                            Journal(signal, account, TradeDecision.Rejected, DecisionReason.BelowPolymarketMinimum,
+                                "Mathematisch unmöglicher Trade (Balance reicht für Minimum nicht)",
+                                Ctx(new { shares = exact.shares, usdc = exact.usdc, availableBalance = account.AvailableBalance }));
                             return;
                         }
 
@@ -417,6 +476,9 @@ namespace PolyTraderSharp.Services
                             _logger.TradeReasoning($"❌ Trade BUY [{signal.MarketQuestion}] [{shareType}] gestoppt:\n" +
                                                    $"   Konto:      {account.Name}\n" +
                                                    $"   Begründung: Unter Polymarket Minimum ({exact.shares:F1} Shares / ${exact.usdc:F2} USDC). Min: 5.5 Shares / $0.10.");
+                            Journal(signal, account, TradeDecision.Rejected, DecisionReason.BelowPolymarketMinimum,
+                                $"Unter Polymarket-Minimum ({exact.shares:F1} Shares / {exact.usdc:F2} USDC)",
+                                Ctx(new { shares = exact.shares, usdc = exact.usdc }));
                             return;
                         }
 
@@ -451,12 +513,17 @@ namespace PolyTraderSharp.Services
                         _logger.Info($"❌ Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                      $"   Konto:      {account.Name}\n" +
                                      $"   Begründung: Position gehört Trader '{wrongTraderPos.SourceTraderName}' (ID {wrongTraderPos.SourceTraderId}), SELL kam aber von Trader ID {signal.TraderId}.");
+                        Journal(signal, account, TradeDecision.Rejected, DecisionReason.OwnershipMismatch,
+                            $"Position gehört Trader {wrongTraderPos.SourceTraderId}, SELL kam von {signal.TraderId}",
+                            Ctx(new { positionOwner = wrongTraderPos.SourceTraderId, signalTrader = signal.TraderId }));
                     }
                     else
                     {
                         _logger.Info($"❌ Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                      $"   Konto:      {account.Name}\n" +
                                      $"   Begründung: Position nicht im Portfolio gefunden (möglicherweise zuvor gefiltert).");
+                        Journal(signal, account, TradeDecision.Rejected, DecisionReason.PositionNotFound,
+                            "Keine Position im Portfolio (möglicherweise zuvor gefiltert)");
                     }
                     return;
                 }
@@ -478,6 +545,9 @@ namespace PolyTraderSharp.Services
                             _logger.TradeReasoning($"📊 Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                                    $"   Konto:      {account.Name}\n" +
                                                    $"   Begründung: Teilverkauf ({sellRatio:P0} des Bestands). Master hält noch {masterShares:F1} Shares. Signal nur {signal.Size:F1} Shares. Schwelle: 30%.");
+                            Journal(signal, account, TradeDecision.Rejected, DecisionReason.PartialSellBelowThreshold,
+                                $"Teilverkauf {sellRatio:P0} unter Schwelle",
+                                Ctx(new { sellRatio, masterShares, signalSize = signal.Size }));
                             return;
                         }
                         _logger.TradeReasoning($"📊 Trade SELL [{signal.MarketQuestion}] [{shareType}] FREIGEGEBEN:\n" +
@@ -492,6 +562,9 @@ namespace PolyTraderSharp.Services
                         _logger.TradeReasoning($"📊 Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                                $"   Konto:      {account.Name}\n" +
                                                $"   Begründung: Master hält laut Tracking 0 Shares, aber SELL Signal mit {signal.Size:F1} Shares erhalten. Inkonsistenz — ignoriert.");
+                        Journal(signal, account, TradeDecision.Rejected, DecisionReason.MasterPositionInconsistent,
+                            "Master hält laut Tracking 0 Shares (Inkonsistenz)",
+                            Ctx(new { signalSize = signal.Size }));
                         return;
                     }
                 }
@@ -504,6 +577,9 @@ namespace PolyTraderSharp.Services
                         _logger.TradeReasoning($"⏳ Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                                $"   Konto:      {account.Name}\n" +
                                                $"   Begründung: Kein Master-Position-Tracking verfügbar und Haltezeit erst {holdingMinutes:F1} Min. Warte auf ersten Sync.");
+                        Journal(signal, account, TradeDecision.Skipped, DecisionReason.SyncGracePeriod,
+                            $"Kein Tracking, Haltezeit {holdingMinutes:F1} Min < Schonfrist",
+                            Ctx(new { holdingMinutes }));
                         return;
                     }
                 }
@@ -554,6 +630,9 @@ namespace PolyTraderSharp.Services
                                       $"   Konto: {account.Name}\n" +
                                       $"   Markt: {signal.MarketQuestion}\n" +
                                       $"   BUY:   {exactShares:F4} Shares [{shareType}] @ ${orderPrice:F3} (Gesamt: ${exactUsdc:F2})");
+                        Journal(signal, account, TradeDecision.Executed, DecisionReason.DemoFilled,
+                            $"Demo-BUY {exactShares:F2} Shares @ {orderPrice:F3}",
+                            Ctx(new { shares = exactShares, usdc = exactUsdc, orderPrice }));
                     }
                     else
                     {
@@ -569,6 +648,22 @@ namespace PolyTraderSharp.Services
                             : FeeModel.FallbackBps(null);
                         var result = await _clob.PlaceOrderAsync(account, signal.TokenId, signal.Side, exactUsdc, orderPrice, buyOrderType, _state.DebugOrderPayloadLog, isNegRisk, buyFeeBps);
 
+                        // S-0: Order-Lifecycle als Daten (core_order_events).
+                        _orderEvents.Write(new OrderEventRecord
+                        {
+                            SignalId = signal.SignalId,
+                            ModuleName = "CopyTrading",
+                            AccountId = account.AccountId,
+                            TokenId = signal.TokenId,
+                            EventType = result == "OK" ? OrderEventType.Placed : OrderEventType.PlaceFailed,
+                            Side = "BUY",
+                            Price = orderPrice,
+                            AmountUsd = exactUsdc,
+                            OrderType = buyOrderType,
+                            Response = result,
+                            DetailsJson = Ctx(new { feeBps = buyFeeBps, signalPrice = signal.Price })
+                        });
+
                         if (result == "OK")
                         {
                             var pos = new Position
@@ -612,6 +707,16 @@ namespace PolyTraderSharp.Services
                             // The background sync will update with the real value within 30 seconds
                             string masterKey = $"{signal.TraderId}_{signal.TokenId}";
                             _copyState.MasterTraderPositions.TryAdd(masterKey, (signal.Size, DateTime.UtcNow));
+
+                            Journal(signal, account, TradeDecision.Executed, DecisionReason.OrderPlaced,
+                                $"Live-BUY {buyOrderType} {exactShares:F2} Shares @ {orderPrice:F3}",
+                                Ctx(new { shares = exactShares, usdc = exactUsdc, orderPrice, orderType = buyOrderType }));
+                        }
+                        else
+                        {
+                            Journal(signal, account, TradeDecision.Failed, DecisionReason.OrderFailed,
+                                $"Live-BUY fehlgeschlagen: {result}",
+                                Ctx(new { usdc = exactUsdc, orderPrice, orderType = buyOrderType }));
                         }
                     }
                 }
@@ -625,6 +730,8 @@ namespace PolyTraderSharp.Services
                         // BUY blockiert einen legitimen schnellen SELL des Masters NICHT mehr.
                         if (pendingInfo.Side == "SELL" && (DateTime.UtcNow - pendingInfo.PlacedAt).TotalSeconds < 20)
                         {
+                            Journal(signal, account, TradeDecision.Skipped, DecisionReason.SellSpamBlock,
+                                "SELL <20s nach letztem SELL (Spam-Blockade)");
                             return; // Spam-Blockade: SELL wurde in den letzten 20 Sekunden bereits versendet
                         }
                     }
@@ -634,6 +741,7 @@ namespace PolyTraderSharp.Services
                     if (account.OpenPositions.TryGetValue(signal.TokenId, out var laddering) && laddering.ExitPending)
                     {
                         _logger.Info($"SELL [{signal.MarketQuestion}] ignoriert: Eskalationsleiter läuft bereits (Konto {account.Name}).");
+                        Journal(signal, account, TradeDecision.Skipped, DecisionReason.LadderAlreadyActive, "Eskalationsleiter läuft bereits");
                         return;
                     }
 
@@ -653,6 +761,8 @@ namespace PolyTraderSharp.Services
                         _logger.Info($"❌ Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                      $"   Konto:      {account.Name}\n" +
                                      $"   Begründung: Position gehört einem anderen Trader (Safety Check).");
+                        Journal(signal, account, TradeDecision.Rejected, DecisionReason.OwnershipMismatch,
+                            "Position gehört einem anderen Trader (Defense-in-depth)");
                     }
                     
                     if (!removed && !string.IsNullOrEmpty(signal.MarketSlug))
@@ -712,7 +822,8 @@ namespace PolyTraderSharp.Services
                                 TotalFees = totalFees,
                                 OpenedAt = openPos.OpenedAt,
                                 ClosedAt = DateTime.UtcNow,
-                                ExitReason = signal.Reason
+                                ExitReason = signal.Reason,
+                                SignalId = signal.SignalId
                             };
                             
                             _closedTradeWriter.TryWrite(ct);
@@ -720,6 +831,10 @@ namespace PolyTraderSharp.Services
                                           $"   Konto: {account.Name}\n" +
                                           $"   Markt: {signal.MarketQuestion}\n" +
                                           $"   SELL:  {openPos.Size:F2} Shares [{shareType}] @ ${signal.Price:F3} (Gewinn: ${realizedPnl:F2})");
+                            Journal(signal, account, TradeDecision.Executed,
+                                signal.TraderId == 0 ? DecisionReason.SystemResolutionClose : DecisionReason.DemoClosed,
+                                $"Demo-Close {openPos.Size:F2} Shares, PnL {realizedPnl:F2}",
+                                Ctx(new { size = openPos.Size, exitPrice = demoExitPrice, realizedPnl, totalFees }));
                         }
                         else
                         {
@@ -727,9 +842,14 @@ namespace PolyTraderSharp.Services
                             // SellLadderService – gleiche Quelle wie der Profit-Target-Exit im Sync).
                             // openPos wurde oben entfernt; StartLadderAsync stellt es als ExitPending zurück.
                             bool isHf = trader != null && trader.Category == "HF";
-                            await _sellLadder.StartLadderAsync(
+                            bool ladderOk = await _sellLadder.StartLadderAsync(
                                 account, openPos, signal.Price, signal.TraderId, isHf,
-                                settings.MaxPriceDifference, settings.SellFloorPct, isNegRisk, "Master SELL");
+                                settings.MaxPriceDifference, settings.SellFloorPct, isNegRisk, "Master SELL", signal.SignalId);
+                            Journal(signal, account,
+                                ladderOk ? TradeDecision.Executed : TradeDecision.Failed,
+                                ladderOk ? DecisionReason.LadderStarted : DecisionReason.LadderStartFailed,
+                                ladderOk ? $"SELL-Leiter gestartet (Referenz {signal.Price:F3})" : "SELL-Leiter-Start fehlgeschlagen/abgelehnt",
+                                Ctx(new { referencePrice = signal.Price, size = openPos.Size, isHf }));
                         }
                     }
                     else
@@ -737,6 +857,8 @@ namespace PolyTraderSharp.Services
                         _logger.Info($"❌ Trade SELL [{signal.MarketQuestion}] [{shareType}] ignoriert:\n" +
                                      $"   Konto:      {account.Name}\n" +
                                      $"   Begründung: Position nicht im Portfolio gefunden (möglicherweise zuvor gefiltert).");
+                        Journal(signal, account, TradeDecision.Rejected, DecisionReason.PositionNotFound,
+                            "Position nicht im Portfolio gefunden");
                     }
                 }
             }

src/PolyTrader.Modules.CopyTrading/Services/PersistenceService.cs

@@ -94,7 +94,8 @@ namespace PolyTraderSharp.Services
                         PnlPercent = trade.PnlPercent,
                         OpenedAt = trade.OpenedAt,
                         ClosedAt = trade.ClosedAt,
-                        ExitReason = trade.ExitReason
+                        ExitReason = trade.ExitReason,
+                        SignalId = trade.SignalId
                     });
 
                     _logger.Debug($"Saved ClosedTrade {trade.TradeId} to MySQL");

src/PolyTrader.Modules.CopyTrading/Services/SellLadderService.cs

@@ -32,6 +32,7 @@ namespace PolyTraderSharp.Services
         private readonly TerminalLogger _logger;
         private readonly ThreemaService _threema;
         private readonly IPositionRepository _positionRepo;
+        private readonly IOrderEventLog _orderEvents;
 
         public SellLadderService(
             CopyTradingState copyState,
@@ -39,7 +40,8 @@ namespace PolyTraderSharp.Services
             IClobClient clob,
             TerminalLogger logger,
             ThreemaService threema,
-            IPositionRepository positionRepo)
+            IPositionRepository positionRepo,
+            IOrderEventLog orderEvents)
         {
             _copyState = copyState;
             _state = state;
@@ -47,6 +49,26 @@ namespace PolyTraderSharp.Services
             _logger = logger;
             _threema = threema;
             _positionRepo = positionRepo;
+            _orderEvents = orderEvents;
+        }
+
+        /// <summary>S-0: Order-Lifecycle-Event der Leiter strukturiert festhalten (core_order_events).</summary>
+        private void OrderEvent(ExitLadderState ladder, OrderEventType type, decimal price, decimal amountUsd, string response, string detailsJson = "")
+        {
+            _orderEvents.Write(new OrderEventRecord
+            {
+                SignalId = ladder.SignalId,
+                ModuleName = "CopyTrading",
+                AccountId = ladder.AccountId,
+                TokenId = ladder.TokenId,
+                EventType = type,
+                Side = "SELL",
+                Price = price,
+                AmountUsd = amountUsd,
+                OrderType = "GTC",
+                Response = response,
+                DetailsJson = detailsJson
+            });
         }
 
         /// <summary>
@@ -57,7 +79,8 @@ namespace PolyTraderSharp.Services
         /// </summary>
         public async Task<bool> StartLadderAsync(
             AccountState account, Position pos, decimal referencePrice, int sourceTraderId,
-            bool isHf, decimal maxPriceDifferencePct, decimal sellFloorPct, bool isNegRisk, string reasonTag)
+            bool isHf, decimal maxPriceDifferencePct, decimal sellFloorPct, bool isNegRisk, string reasonTag,
+            string signalId = "")
         {
             string key = $"{account.AccountId}_{pos.TokenId}";
 
@@ -87,6 +110,7 @@ namespace PolyTraderSharp.Services
                 AccountId = account.AccountId,
                 TokenId = pos.TokenId,
                 SourceTraderId = sourceTraderId,
+                SignalId = signalId,
                 MarketQuestion = pos.MarketQuestion,
                 ReferencePrice = referencePrice,
                 CurrentLimit = firstLimit,
@@ -123,6 +147,9 @@ namespace PolyTraderSharp.Services
                 ? FeeModel.ResolveBps(startMd.TakerFeeBps, startMd.Category)
                 : FeeModel.FallbackBps(null);
             var result = await _clob.PlaceOrderAsync(account, pos.TokenId, "SELL", pos.Size * firstLimit, firstLimit, "GTC", _state.DebugOrderPayloadLog, isNegRisk, feeBps);
+            OrderEvent(ladder, result == "OK" ? OrderEventType.LadderStart : OrderEventType.PlaceFailed,
+                firstLimit, pos.Size * firstLimit, result,
+                $"{{\"reasonTag\":\"{reasonTag}\",\"floor\":{floor.ToString(System.Globalization.CultureInfo.InvariantCulture)}}}");
 
             if (result == "OK")
             {
@@ -187,6 +214,8 @@ namespace PolyTraderSharp.Services
                 pos.ExitPending = false;
                 if (!account.IsDemo) _positionRepo.UpsertLive(account.AccountId, pos);
                 _logger.Warning($"🧹 [SELL-LEITER Dust] {account.Name} | {ladder.MarketQuestion}: Restgröße {pos.Size:F2} < Minimum {CopyTradingRisk.MinShares} Shares – Leiter beendet, Rest gehalten.");
+                OrderEvent(ladder, OrderEventType.DustAbort, ladder.CurrentLimit, pos.Size * ladder.CurrentLimit,
+                    "Dust", $"{{\"restShares\":{pos.Size.ToString(System.Globalization.CultureInfo.InvariantCulture)}}}");
                 return;
             }
 
@@ -221,6 +250,7 @@ namespace PolyTraderSharp.Services
                     try
                     {
                         var r = await _clob.PlaceOrderAsync(account, ladder.TokenId, "SELL", pos.Size * ladder.Floor, ladder.Floor, "GTC", _state.DebugOrderPayloadLog, isNegFloor, floorFeeBps);
+                        OrderEvent(ladder, OrderEventType.FloorReplaced, ladder.Floor, pos.Size * ladder.Floor, r);
                         if (r == "OK")
                             _copyState.PendingOrderTimestamps[key] = (DateTime.UtcNow, ladder.SourceTraderId, "SELL");
                         else
@@ -259,6 +289,9 @@ namespace PolyTraderSharp.Services
 
                 decimal usdc = pos.Size * next;
                 var result = await _clob.PlaceOrderAsync(account, ladder.TokenId, "SELL", usdc, next, "GTC", _state.DebugOrderPayloadLog, isNegRisk, stepFeeBps);
+                OrderEvent(ladder, result == "OK" ? OrderEventType.LadderStep : OrderEventType.PlaceFailed,
+                    next, usdc, result,
+                    $"{{\"attempt\":{ladder.Attempt + 1},\"floor\":{ladder.Floor.ToString(System.Globalization.CultureInfo.InvariantCulture)}}}");
 
                 if (result == "OK")
                 {

tests/PolyTrader.Tests/AnalysisJournalTests.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Text.Json;
+using PolyTrader.Core.Persistence.Ef;
+using PolyTrader.Tests.TestSupport;
+using PolyTraderSharp.Models;
+using PolyTraderSharp.Services;
+using Xunit;
+
+namespace PolyTrader.Tests
+{
+    /// <summary>
+    /// Sicherheitsnetz für das S-0-Datenfundament: JSONL-Log-Format (pur) und die
+    /// Entscheidungsjournal-/Order-Event-Repos (EF InMemory, inkl. Enum-als-String-Roundtrip).
+    /// </summary>
+    public class AnalysisJournalTests
+    {
+        // ----- LogJson (pur) -----
+
+        [Fact]
+        public void LogJson_produces_valid_single_line_json()
+        {
+            var e = new LogMessageEventArgs("Zeile1\nZeile2 mit \"Quotes\" und 0,95 €", LogLevel.Trade, "sig-123");
+            string line = LogJson.Format(e);
+
+            Assert.DoesNotContain('\n', line);                    // eine Zeile (JSONL)
+            using var doc = JsonDocument.Parse(line);             // valides JSON
+            Assert.Equal("Trade", doc.RootElement.GetProperty("level").GetString());
+            Assert.Equal("sig-123", doc.RootElement.GetProperty("cid").GetString());
+            Assert.Contains("Zeile2", doc.RootElement.GetProperty("msg").GetString());
+        }
+
+        [Fact]
+        public void LogJson_omits_empty_correlation_id()
+        {
+            string line = LogJson.Format(new LogMessageEventArgs("msg", LogLevel.Info));
+            using var doc = JsonDocument.Parse(line);
+            Assert.False(doc.RootElement.TryGetProperty("cid", out _));
+        }
+
+        // ----- Repos (EF InMemory) -----
+
+        private static InMemoryContextFactory<CoreDbContext> Factory() => new(o => new CoreDbContext(o));
+
+        [Fact]
+        public void DecisionJournal_write_and_query_roundtrip()
+        {
+            var journal = new EfDecisionJournal(Factory());
+            journal.Write(new DecisionRecord
+            {
+                SignalId = "sig-1", ModuleName = "CopyTrading", AccountId = 1, TokenId = "tok",
+                Side = "BUY", Decision = TradeDecision.Rejected, Reason = DecisionReason.MaxBuyPriceExceeded,
+                SignalPrice = 0.97m, Message = "test"
+            });
+            journal.Write(new DecisionRecord
+            {
+                SignalId = "sig-2", AccountId = 1, TokenId = "tok",
+                Decision = TradeDecision.Executed, Reason = DecisionReason.OrderPlaced
+            });
+
+            var rejects = journal.Query(d => d.Reason == DecisionReason.MaxBuyPriceExceeded);
+            Assert.Single(rejects);
+            Assert.Equal("sig-1", rejects[0].SignalId);
+            Assert.Equal(TradeDecision.Rejected, rejects[0].Decision);   // Enum-Roundtrip
+            Assert.Equal(2, journal.Query(d => d.AccountId == 1).Count);
+        }
+
+        [Fact]
+        public void OrderEventLog_write_and_query_roundtrip()
+        {
+            var log = new EfOrderEventLog(Factory());
+            log.Write(new OrderEventRecord
+            {
+                SignalId = "sig-1", AccountId = 1, TokenId = "tok",
+                EventType = OrderEventType.LadderStep, Side = "SELL", Price = 0.42m, Response = "OK"
+            });
+
+            var events = log.Query(e => e.SignalId == "sig-1");
+            Assert.Single(events);
+            Assert.Equal(OrderEventType.LadderStep, events[0].EventType);
+        }
+
+        [Fact]
+        public void CopySignal_gets_signal_id_automatically()
+        {
+            var a = new CopySignal();
+            var b = new CopySignal();
+            Assert.False(string.IsNullOrEmpty(a.SignalId));
+            Assert.NotEqual(a.SignalId, b.SignalId);
+        }
+    }
+}

tests/PolyTrader.Tests/CopyTradingEngineTests.cs

@@ -27,6 +27,7 @@ namespace PolyTrader.Tests
             public CopyTradingState Copy = null!;
             public FakeClobClient Clob = null!;
             public ChannelReader<ClosedTrade> ClosedReader = null!;
+            public FakeDecisionJournal Journal = null!;
         }
 
         private static Harness Build()
@@ -40,18 +41,20 @@ namespace PolyTrader.Tests
             var marketRepo = new FakeMarketRepository();
             var accountRepo = new FakeAccountRepository();
             var threema = new ThreemaService(logger, new JobManager());
-            var ladder = new SellLadderService(copy, state, clob, logger, threema, posRepo);
+            var journal = new FakeDecisionJournal();
+            var orderEvents = new FakeOrderEventLog();
+            var ladder = new SellLadderService(copy, state, clob, logger, threema, posRepo, orderEvents);
 
             var signalCh = Channel.CreateUnbounded<CopySignal>();
             var closedCh = Channel.CreateUnbounded<ClosedTrade>();
 
             var engine = new CopyTradingEngine(state, copy, signalCh.Reader, closedCh.Writer, logger,
-                clob, api, posRepo, marketRepo, accountRepo, ladder);
+                clob, api, posRepo, marketRepo, accountRepo, ladder, journal, orderEvents);
 
             // MarketData cachen, damit der API-Pfad (Cache-Miss) nie läuft.
             state.MarketCache[Tok] = new MarketData { Slug = "slug", Question = "Frage?", Category = "Politics", TakerFeeBps = 0, NegRisk = false };
 
-            return new Harness { Engine = engine, State = state, Copy = copy, Clob = clob, ClosedReader = closedCh.Reader };
+            return new Harness { Engine = engine, State = state, Copy = copy, Clob = clob, ClosedReader = closedCh.Reader, Journal = journal };
         }
 
         private static AccountState Account(bool demo) => new()
@@ -88,6 +91,9 @@ namespace PolyTrader.Tests
 
             Assert.Empty(h.Clob.Placed);          // kein Zukauf während des Ausstiegs
             Assert.True(acc.OpenPositions[Tok].ExitPending);
+            // S-0: Entscheidung strukturiert im Journal (nicht nur Freitext-Log).
+            Assert.Contains(h.Journal.Written, d =>
+                d.Decision == TradeDecision.Skipped && d.Reason == DecisionReason.ExitPendingBuySkip && d.TokenId == Tok);
         }
 
         // ---------- Doppel-SELL-Guard ----------
@@ -120,6 +126,9 @@ namespace PolyTrader.Tests
             Assert.False(acc.OpenPositions.ContainsKey(Tok));      // Demo-Position geschlossen
             Assert.True(h.ClosedReader.TryRead(out var ct));       // ClosedTrade geschrieben
             Assert.Equal(Tok, ct!.TokenId);
+            Assert.False(string.IsNullOrEmpty(ct.SignalId));       // S-0: Korrelation gesetzt
+            Assert.Contains(h.Journal.Written, d =>
+                d.Decision == TradeDecision.Executed && d.Reason == DecisionReason.SystemResolutionClose);
         }
 
         [Fact]

tests/PolyTrader.Tests/Fakes/FakeAnalysisJournals.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using PolyTrader.Core.Persistence;
+using PolyTraderSharp.Models;
+
+namespace PolyTrader.Tests.Fakes
+{
+    /// <summary>In-Memory-Stub des Entscheidungsjournals – Tests können Journal-Einträge asserten.</summary>
+    public sealed class FakeDecisionJournal : IDecisionJournal
+    {
+        public List<DecisionRecord> Written { get; } = new();
+        public void Write(DecisionRecord record) => Written.Add(record);
+        public List<DecisionRecord> Query(Expression<Func<DecisionRecord, bool>> predicate, int limit = 1000)
+            => Written.Where(predicate.Compile()).Take(limit).ToList();
+    }
+
+    /// <summary>In-Memory-Stub des Order-Lifecycle-Logs.</summary>
+    public sealed class FakeOrderEventLog : IOrderEventLog
+    {
+        public List<OrderEventRecord> Written { get; } = new();
+        public void Write(OrderEventRecord record) => Written.Add(record);
+        public List<OrderEventRecord> Query(Expression<Func<OrderEventRecord, bool>> predicate, int limit = 1000)
+            => Written.Where(predicate.Compile()).Take(limit).ToList();
+    }
+}

tests/PolyTrader.Tests/SellLadderServiceTests.cs

@@ -27,7 +27,7 @@ namespace PolyTrader.Tests
             var logger = new TerminalLogger();
             var threema = new ThreemaService(logger, new JobManager());
             var repo = new FakePositionRepository();
-            var svc = new SellLadderService(copy, state, clob, logger, threema, repo);
+            var svc = new SellLadderService(copy, state, clob, logger, threema, repo, new FakeOrderEventLog());
             return (svc, copy, state, clob, repo);
         }
 

tests/PolyTrader.Tests/TraderMonitorServiceTests.cs

@@ -30,7 +30,7 @@ namespace PolyTrader.Tests
             var marketRepo = new FakeMarketRepository();
             var tradeLog = new FakeCopyTradeLogRepository();
             var threema = new ThreemaService(logger, new JobManager());
-            var ladder = new SellLadderService(copy, state, clob, logger, threema, posRepo);
+            var ladder = new SellLadderService(copy, state, clob, logger, threema, posRepo, new FakeOrderEventLog());
             var signalCh = Channel.CreateUnbounded<CopySignal>();
             var closedCh = Channel.CreateUnbounded<ClosedTrade>();