@

R3 Slice 3: CongressTrading-Modul + Worker-Log + core_settings auf EF Core

- Modul: CongressTradingDbContext (ct_congressMember/ct_trade) + Design-Time-Factory;
  CongressRepository von Dapper auf EF; CongressTrade.DetailsFetched ergaenzt; Dapper entfernt
- Core: CoreSettingsService (core_settings via EF); WorkerBase-Log auf EF (core_worker_log);
  7 Worker-Ctors DatabaseService -> IDbContextFactory<CoreDbContext>
- CoreMigrations + CongressMigrations (Dapper) entfernt; core_-Schema nun rein EF
- EF-Migration InitialCongressTrading; AddCorePersistence-Fallback fuer leeren Connection-String
  (App startet ohne DB); Connection aus appsettings.Local.json (gitignored)
- Tests: +4 CongressRepository (EF-InMemory) -> 39/39 gruen; Build + smoke-ui + App-Start ok

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

tests/IBKRTrader.Tests/Workers/WorkerBaseTests.cs

@@ -1,9 +1,9 @@
 using System.Diagnostics;
 using FluentAssertions;
-using IBKRTrader.Core.Database;
 using IBKRTrader.Core.Logging;
-using IBKRTrader.Core.Settings;
+using IBKRTrader.Core.Persistence.Ef;
 using IBKRTrader.Core.Workers;
+using Microsoft.EntityFrameworkCore;
 
 namespace IBKRTrader.Tests.Workers;
 
@@ -26,9 +26,17 @@ public class WorkerBaseTests
         public override string     Module => "TEST";
         protected override TimeSpan? Interval => _interval;
 
+        private sealed class InMemoryFactory(DbContextOptions<CoreDbContext> o) : IDbContextFactory<CoreDbContext>
+        {
+            public CoreDbContext CreateDbContext() => new(o);
+        }
+
+        private static IDbContextFactory<CoreDbContext> Dbf() =>
+            new InMemoryFactory(new DbContextOptionsBuilder<CoreDbContext>()
+                .UseInMemoryDatabase(Guid.NewGuid().ToString()).Options);
+
         public TestWorker(TimeSpan? interval, Func<CancellationToken, Task> body)
-            : base(new LoggingService(),
-                   new DatabaseService(new SettingsService(), new LoggingService()))
+            : base(new LoggingService(), Dbf())
         {
             _interval = interval;
             _body     = body;