@

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/Modules/CongressTradingModuleTests.cs

@@ -45,7 +45,6 @@ public class CongressTradingModuleTests
         var types = services.Select(d => d.ServiceType).ToList();
         types.Should().Contain(new[]
         {
-            typeof(CongressMigrations),
             typeof(CongressRepository),
             typeof(CapitolTradesScraper),
             typeof(CongressHistoryImportWorker),