Fix: Startet nicht / MySQL-Timeout ohne UI (Config- & Startup-Härtung)

Ursachen (App startete aus bin/ bzw. per Doppelklick ohne UI):
1. appsettings.Local.json (MySQL-Connection) wurde NICHT ins Output kopiert und
   nur relativ zum Arbeitsverzeichnis geladen -> leere Connection -> Pomelo fiel
   auf localhost:3306 zurueck -> "Connect Timeout expired".
2. ServerVersion.AutoDetect(conn) oeffnet beim Options-Bau eine blockierende
   DB-Verbindung -> haengt/crasht den Start, wenn die DB nicht erreichbar ist.
3. CopyTradingEngine.StartAsync lud den MarketCache ungeschuetzt -> DB-Fehler
   riss AppHost.Start() ab, bevor die UI erschien.

Fixes:
- csproj: appsettings.Local.json mit ins Output kopieren (CopyToOutputDirectory).
- Program: UseContentRoot(AppContext.BaseDirectory) -> Config wird immer neben
  der EXE gesucht (Main + Smoke-Test).
- ServerVersion fest gepinnt: DatabaseServerVersion.Value = MariaDB 11.8.6 (wie
  am Server erkannt); AddCorePersistence + CopyTradingModule nutzen sie statt
  AutoDetect. Kein blockierender Connect mehr beim Start.
- CopyTradingEngine-Preload in try/catch: DB-Fehler bricht den Start nicht mehr ab.
- Neuer Diagnose-CLI --db-version (gibt @@version aus).

Verifiziert: --smoke-ui aus fremdem Arbeitsverzeichnis laeuft gruen
(3 Accounts / 32 Trader hydriert, alle Views + Launcher OK).

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

PolyTrader.App.csproj

@@ -32,6 +32,11 @@
     <None Update="appsettings.json">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <!-- Gitignorierte Local-Datei (MySQL-Connection) neben die EXE kopieren, damit die App
+         die Verbindung auch findet, wenn sie NICHT aus dem Projekt-Root gestartet wird. -->
+    <None Update="appsettings.Local.json" Condition="Exists('appsettings.Local.json')">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
 
   <ItemGroup>

Program.cs

@@ -48,6 +48,13 @@ internal static class Program
 			return;
 		}
 
+		// Diagnose: gibt die MySQL-Serverversion aus (für das ServerVersion-Pinning). Kein UI.
+		if (args.Length > 0 && string.Equals(args[0], "--db-version", StringComparison.OrdinalIgnoreCase))
+		{
+			RunDbVersion();
+			return;
+		}
+
 		ApplicationConfiguration.Initialize();
 
 			var modules = new System.Collections.Generic.List<IPolyTraderModule>
@@ -56,6 +63,9 @@ internal static class Program
 			};
 
 			AppHost = Host.CreateDefaultBuilder()
+				// Config immer neben der EXE suchen (nicht im Arbeitsverzeichnis), damit die App
+				// auch beim Start aus bin/ oder per Doppelklick ihre appsettings findet.
+				.UseContentRoot(AppContext.BaseDirectory)
 				// Host.CreateDefaultBuilder lädt appsettings.Local.json NICHT (nur appsettings.json
 				// + appsettings.{Environment}.json). Die gitignorierte Local-Datei hält aber die
 				// MySQL-Connection – daher hier explizit ergänzen, sonst bleibt sie leer.
@@ -252,6 +262,34 @@ internal static class Program
 		Services.ConfigMigrator.VerifyMySql(mySql);
 	}
 
+	private static void RunDbVersion()
+	{
+		var config = new Microsoft.Extensions.Configuration.ConfigurationBuilder()
+			.SetBasePath(System.IO.Directory.GetCurrentDirectory())
+			.AddJsonFile("appsettings.json", optional: true)
+			.AddJsonFile("appsettings.Local.json", optional: true)
+			.AddEnvironmentVariables()
+			.Build();
+
+		var conn = config["Database:MySqlConnectionString"] ?? string.Empty;
+		if (string.IsNullOrWhiteSpace(conn))
+		{
+			Console.WriteLine("FEHLER: Database:MySqlConnectionString fehlt (appsettings.Local.json).");
+			return;
+		}
+
+		try
+		{
+			using var c = new MySqlConnector.MySqlConnection(conn);
+			c.Open();
+			Console.WriteLine($"ServerVersion: {c.ServerVersion}");
+		}
+		catch (Exception ex)
+		{
+			Console.WriteLine($"FEHLER: {ex.GetType().Name}: {ex.Message}");
+		}
+	}
+
 	/// <summary>
 	/// Headless-Smoke-Test: baut einen minimalen Host (Persistenz + State + Modul-Registrierung
 	/// + Shell/Launcher), hydriert den State aus MySQL und konstruiert jede registrierte View
@@ -265,6 +303,7 @@ internal static class Program
 		var modules = new System.Collections.Generic.List<IPolyTraderModule> { new CopyTradingModule() };
 
 		using var host = Host.CreateDefaultBuilder()
+			.UseContentRoot(AppContext.BaseDirectory)
 			.ConfigureAppConfiguration((context, config) =>
 				config.AddJsonFile("appsettings.Local.json", optional: true, reloadOnChange: false))
 			.ConfigureServices((context, services) =>

src/PolyTrader.Core/Configuration/DatabaseOptions.cs

@@ -1,3 +1,6 @@
+using System;
+using Microsoft.EntityFrameworkCore;
+
 namespace PolyTrader.Core.Configuration
 {
     /// <summary>
@@ -11,4 +14,15 @@ namespace PolyTrader.Core.Configuration
         /// <summary>MySQL-Connection-String (aus gitignorierter appsettings.Local.json).</summary>
         public string MySqlConnectionString { get; set; } = string.Empty;
     }
+
+    /// <summary>
+    /// Feste Ziel-Server-Version (MariaDB 11.8.6, wie am Server erkannt). Bewusst gepinnt statt
+    /// <c>ServerVersion.AutoDetect</c>: AutoDetect öffnet beim Bau der DbContext-Optionen eine
+    /// blockierende DB-Verbindung – ist die DB langsam/nicht erreichbar, hängt/crasht der Start,
+    /// bevor die UI erscheint. Mit fester Version startet die App unabhängig von der DB.
+    /// </summary>
+    public static class DatabaseServerVersion
+    {
+        public static ServerVersion Value => new MariaDbServerVersion(new Version(11, 8, 6));
+    }
 }

src/PolyTrader.Core/DependencyInjection/ServiceCollectionExtensions.cs

@@ -17,7 +17,7 @@ namespace PolyTrader.Core.DependencyInjection
         public static IServiceCollection AddCorePersistence(this IServiceCollection services, DatabaseOptions options)
         {
             var conn = options.MySqlConnectionString;
-            services.AddDbContextFactory<CoreDbContext>(o => o.UseMySql(conn, ServerVersion.AutoDetect(conn)));
+            services.AddDbContextFactory<CoreDbContext>(o => o.UseMySql(conn, DatabaseServerVersion.Value));
 
             services.AddSingleton<IAccountRepository, EfAccountRepository>();
             services.AddSingleton<IMarketRepository, EfMarketRepository>();

src/PolyTrader.Modules.CopyTrading/CopyTradingModule.cs

@@ -5,6 +5,7 @@ using System.Threading.Channels;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using PolyTrader.Core.Configuration;
 using PolyTrader.Core.Modularity;
 using PolyTrader.Modules.CopyTrading.Persistence;
 using PolyTrader.Modules.CopyTrading.Persistence.Ef;
@@ -39,7 +40,7 @@ namespace PolyTrader.Modules.CopyTrading
 
             // Modul-Persistenz: EF Core / Pomelo / MySQL (thread-safer DbContextFactory).
             var conn = configuration["Database:MySqlConnectionString"] ?? string.Empty;
-            services.AddDbContextFactory<CopyTradingDbContext>(o => o.UseMySql(conn, ServerVersion.AutoDetect(conn)));
+            services.AddDbContextFactory<CopyTradingDbContext>(o => o.UseMySql(conn, DatabaseServerVersion.Value));
 
             services.AddSingleton<ICopyTradeLogRepository, EfCopyTradeLogRepository>();
             services.AddSingleton<ICopyTradingAccountSettingsRepository, EfCopyTradingAccountSettingsRepository>();

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

@@ -53,6 +53,7 @@ namespace PolyTraderSharp.Services
         public override async Task StartAsync(CancellationToken cancellationToken)
         {
             _logger.Info("Starte Preload des MarketCache aus der Datenbank um Flaschenhälse zu vermeiden...");
+            try
             {
                 // Initialize cache for EVERYTHING in DB that is not closed!
                 var activeMarkets = _marketRepo.GetActive();
@@ -62,7 +63,7 @@ namespace PolyTraderSharp.Services
                 {
                     if (!string.IsNullOrEmpty(md.ClobTokenIds))
                     {
-                        try 
+                        try
                         {
                             var tokenIds = System.Text.Json.JsonSerializer.Deserialize<List<string>>(md.ClobTokenIds);
                             if (tokenIds != null)
@@ -79,6 +80,12 @@ namespace PolyTraderSharp.Services
                 }
                 _logger.Info($"MarketCache Preload abgeschlossen: {loaded} Token herangeführt.");
             }
+            catch (Exception ex)
+            {
+                // DB nicht erreichbar o.ä.: Start NICHT abbrechen (sonst erscheint keine UI).
+                // Der Cache füllt sich zur Laufzeit über den MarketSync/Signale nach.
+                _logger.Error($"MarketCache Preload übersprungen (DB nicht erreichbar?): {ex.Message}");
+            }
             await base.StartAsync(cancellationToken);
         }
 

src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>