R8: Accounting- + Supervisor-Modul + Core-Datenfundament (S-0)

Portierung der beiden fehlenden Grundbausteine aus PolytraderSharp (voller Ausbau).

Core S-0 (Datenfundament fuer Analyse/Forensik):
- core_decision_journal + core_order_events (+ ReasonCode/Decision/OrderEvent-Enums),
  IDecisionJournal/IOrderEventLog mit fehlertoleranten EF-Impls (Handel bricht nie).
- SignalId-Durchreichung TradeSignal -> ExecutionService -> core_trade_history;
  ExecutionService schreibt an jeder Verzweigung Journal/Order-Events.
- JSONL-Log-Sink (LogJson + Dual-Sink), pure Analytik: RealizedPnlEngine (FIFO),
  TradeAnalytics, DossierBuilder. Migration AddAnalysisFoundation.

Accounting-Modul (acc_): unabhaengiger IBKR-Kontoauszug (Activity Flex Query) hinter
Interfaces mit Offline-Null-Stubs -> append-only Ledger + Periodenabrechnung/BWA + FX
(USD/EUR) + CSV/PDF (PDFsharp/MigraDoc). Steuerschicht bewusst offen (Platzhalter-Tab).
Kein Handel. Migration InitialAccounting.

Supervisor-Modul (sup_): read-only OpenRouter-Agent (Function-Calling-Loop) + read-only
Tool-Registry (8 Tools) + Profile + Dossier-Browser + Counterfactual-Job (Stub) +
Tagesbericht/MCP-Light (opt-in). Migration InitialSupervisor.

Verdrahtung: Program.cs (beide Module + Icons), slnx/App/Tests-Referenzen,
provision-db.ps1, AppSettings-Sektionen, docs/konzepte, README.

Tests: 79 -> 117 gruen (FIFO/KPIs/Dossier/JSONL, Classifier/Engine/FX/Idempotenz,
OpenRouter/Registry/Agent/MCP, STA-Konstruktion beider neuen Fenster).

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

src/IBKRTrader.Core/Settings/AppSettings.cs

@@ -214,6 +214,53 @@ public class TradingSettings
     public override string ToString() => $"{Mode} – {(TradingEnabled ? "aktiv" : "inaktiv")}";
 }
 
+// ─── Accounting ──────────────────────────────────────────────────────────────
+
+[TypeConverter(typeof(ExpandableObjectConverter))]
+public class AccountingSettings
+{
+    [Category("Accounting")]
+    [DisplayName("Basiswährung")]
+    [Description("Kontobasiswährung für die Abrechnung (Standard: USD)")]
+    public string BaseCurrency { get; set; } = "USD";
+
+    [Category("Accounting")]
+    [DisplayName("Ingest-Intervall (Stunden)")]
+    [Description("Abstand der automatischen Kontoauszug-Abrufe (Live-Quelle; offline ungenutzt)")]
+    public int IngestIntervalHours { get; set; } = 6;
+
+    [Category("Accounting")]
+    [DisplayName("Flex Query-Id")]
+    [Description("IBKR Activity Flex Query-Id (Zielland – Live-Abruf; leer = offline)")]
+    public string FlexQueryId { get; set; } = "";
+
+    [Category("Accounting")]
+    [DisplayName("Flex-Token")]
+    [Description("IBKR Flex Web Service Token (Zielland; verschlüsselt ablegen, nicht im Klartext)")]
+    [PasswordPropertyText(true)]
+    public string FlexToken { get; set; } = "";
+
+    public override string ToString() => $"Basis {BaseCurrency}, alle {IngestIntervalHours} h";
+}
+
+// ─── Supervisor ──────────────────────────────────────────────────────────────
+
+[TypeConverter(typeof(ExpandableObjectConverter))]
+public class SupervisorSettings
+{
+    [Category("Supervisor")]
+    [DisplayName("Modell")]
+    [Description("OpenRouter-Modell für die Analyse (Standard: openrouter/auto)")]
+    public string Model { get; set; } = "openrouter/auto";
+
+    [Category("Supervisor")]
+    [DisplayName("Token-Budget/Analyse")]
+    [Description("Weiches Token-Budget je Analyse-Lauf (Hinweis; harte Grenze = max. Tool-Iterationen)")]
+    public int TokenBudgetPerRun { get; set; } = 60000;
+
+    public override string ToString() => Model;
+}
+
 // ─── Root ────────────────────────────────────────────────────────────────────
 
 public class AppSettings
@@ -252,4 +299,14 @@ public class AppSettings
     [DisplayName("Trading")]
     [Description("Handelsmodus und Risiko-Parameter")]
     public TradingSettings   Trading        { get; set; } = new();
+
+    [Category("Accounting")]
+    [DisplayName("Accounting")]
+    [Description("Buchhaltung/Reporting (unabhängiger Kontoauszug-Ingest)")]
+    public AccountingSettings Accounting     { get; set; } = new();
+
+    [Category("Supervisor")]
+    [DisplayName("Supervisor")]
+    [Description("KI-Analyse/Forensik (OpenRouter, read-only)")]
+    public SupervisorSettings Supervisor     { get; set; } = new();
 }