@

R5: CongressTrading als Strategie (Signal -> ExecutionService) + Positionen im Modul-Fenster

- CongressTradingStrategy: neuer Scrape-Trade -> TradeSignal (buy/sell-Mapping, sonst ignoriert)
  -> Core-IExecutionService; CongressScrapeWorker ruft sie je neuem Trade (try/catch-isoliert)
- Modul-Fenster: offene Positionen des Moduls via IPortfolioService.GetPositionsAsync("CT")
- Tests: CongressTradingStrategy (Mapping/Ausfuehrung, gemockter ExecutionService) -> 51/51 gruen
- Handel bleibt sicher aus (TradingEnabled=false + NullBrokerClient), bis Broker+Freigabe
- Build + smoke-ui + App-Start ok

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

src/IBKRTrader.Modules.CongressTrading/UI/CongressTradingForm.cs

@@ -1,13 +1,13 @@
 using IBKRTrader.Core.Logging;
+using IBKRTrader.Core.Trading;
 using IBKRTrader.Core.Workers;
 using IBKRTrader.Modules.CongressTrading.Database;
 
 namespace IBKRTrader.Modules.CongressTrading.UI;
 
 /// <summary>
-/// Eigenständiges Fenster des CongressTrading-Moduls.
-/// Grundgerüst mit DB-Kennzahlen und manuellem Scrape-Trigger.
-/// Die vollständige Trade-/Positions-Ansicht folgt in einer späteren Phase.
+/// Eigenständiges Fenster des CongressTrading-Moduls: DB-Kennzahlen, manueller Scrape-Trigger
+/// und die offenen Positionen des Moduls (aus dem Core-Portfolio).
 /// </summary>
 public sealed class CongressTradingForm : Form
 {
@@ -15,6 +15,7 @@ public sealed class CongressTradingForm : Form
 
     private readonly CongressRepository _repo;
     private readonly WorkerEngine       _engine;
+    private readonly IPortfolioService  _portfolio;
     private readonly LoggingService     _logger;
 
     private readonly Label  _lblTrades  = new() { AutoSize = true, Location = new Point(20, 70) };
@@ -23,11 +24,22 @@ public sealed class CongressTradingForm : Form
     private readonly Button _btnScrape  = new() { Text = "Scrape jetzt",  Location = new Point(170, 140), Width = 140 };
     private readonly Label  _lblStatus  = new() { AutoSize = true, Location = new Point(20, 185), ForeColor = SystemColors.GrayText };
 
-    public CongressTradingForm(CongressRepository repo, WorkerEngine engine, LoggingService logger)
+    private readonly DataGridView _positions = new()
     {
-        _repo   = repo;
-        _engine = engine;
-        _logger = logger;
+        Location            = new Point(20, 250),
+        Anchor              = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right,
+        ReadOnly            = true,
+        AllowUserToAddRows  = false,
+        RowHeadersVisible   = false,
+        AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill
+    };
+
+    public CongressTradingForm(CongressRepository repo, WorkerEngine engine, IPortfolioService portfolio, LoggingService logger)
+    {
+        _repo      = repo;
+        _engine    = engine;
+        _portfolio = portfolio;
+        _logger    = logger;
 
         Text          = "Congress Trading [CT]";
         Width         = 900;
@@ -47,14 +59,15 @@ public sealed class CongressTradingForm : Form
             AutoSize = true
         };
 
-        var hint = new Label
+        var posLabel = new Label
         {
-            Text      = "Vollständige Trade- und Positions-Ansicht folgt in Phase 4.",
-            Location  = new Point(20, 230),
-            AutoSize  = true,
-            ForeColor = SystemColors.GrayText
+            Text     = "Offene Positionen (Modul CT):",
+            Location = new Point(20, 225),
+            AutoSize = true
         };
 
+        _positions.Size = new Size(ClientSize.Width - 40, ClientSize.Height - 270);
+
         _btnRefresh.Click += async (_, _) => await RefreshStatsAsync();
         _btnScrape.Click  += async (_, _) => await TriggerScrapeAsync();
 
@@ -64,7 +77,8 @@ public sealed class CongressTradingForm : Form
         Controls.Add(_btnRefresh);
         Controls.Add(_btnScrape);
         Controls.Add(_lblStatus);
-        Controls.Add(hint);
+        Controls.Add(posLabel);
+        Controls.Add(_positions);
     }
 
     protected override async void OnShown(EventArgs e)
@@ -81,6 +95,12 @@ public sealed class CongressTradingForm : Form
             var members = await _repo.GetMemberCountAsync();
             _lblTrades.Text  = $"Trades in DB: {trades:N0}";
             _lblMembers.Text = $"Mitglieder in DB: {members:N0}";
+
+            var positions = await _portfolio.GetPositionsAsync(CongressTradingModule.LogTag);
+            _positions.DataSource = positions
+                .Select(p => new { p.Symbol, Stück = p.Quantity, Ø_Kurs = p.AvgPrice, Wert = p.Notional })
+                .ToList();
+
             _lblStatus.Text  = $"Aktualisiert: {DateTime.Now:HH:mm:ss}";
         }
         catch (Exception ex)