feat: load legacy Cuts and Res runtime assets

src/MBN_STOCK_WEBVIEW.Infrastructure/DatabaseRuntime.cs

@@ -30,6 +30,43 @@ public sealed class DatabaseRuntime
         return Create(options);
     }
 
+    public static DatabaseRuntime CreateLegacyExecutableDefault(
+        string baseDirectory,
+        string? fallbackConfigurationPath = null,
+        string? legacyOverridePath = null)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(baseDirectory);
+        var legacyIniPath = Path.Combine(
+            Path.GetFullPath(baseDirectory),
+            "Res",
+            "MmoneyCoder.ini");
+        if (File.Exists(legacyIniPath))
+        {
+            return Create(new LegacyIniDatabaseOptionsLoader().Load(legacyIniPath));
+        }
+
+        var localOverride = legacyOverridePath ?? ResolveLegacyOverridePath();
+        if (!string.IsNullOrWhiteSpace(localOverride) && File.Exists(localOverride))
+        {
+            return Create(new LegacyIniDatabaseOptionsLoader().Load(localOverride));
+        }
+
+        return CreateDefault(fallbackConfigurationPath);
+    }
+
+    private static string? ResolveLegacyOverridePath()
+    {
+        var localAppData = Environment.GetFolderPath(
+            Environment.SpecialFolder.LocalApplicationData);
+        return string.IsNullOrWhiteSpace(localAppData)
+            ? null
+            : Path.Combine(
+                localAppData,
+                "MBN_STOCK_WEBVIEW",
+                "Res",
+                "MmoneyCoder.ini");
+    }
+
     public static DatabaseRuntime Create(DatabaseOptions options)
     {
         ArgumentNullException.ThrowIfNull(options);