fix: parse project rosters with legacy-compatible semantics

Launcher.Next.App/MainWindow.xaml.cs

@@ -17,6 +17,7 @@ public partial class MainWindow : System.Windows.Window
     private LauncherProduct? selected;
     private string? projectPath;
     private string? manualRosterPath;
+    private string? selectedRosterSnapshotPath;
     private string stage = "ProductSelection";
     private string code = "PRODUCT_NOT_SELECTED";
     private string detail = "";
@@ -105,10 +106,10 @@ public partial class MainWindow : System.Windows.Window
             pattern = localProfile is not null && selected.Id == "plant3d" ? localProfile.PatternName : product.Pattern;
             expectedRoster = manualRosterPath ?? LegacyProductSelections.AutomaticRoster(product, projectPath);
             Transition("AutomaticRosterPathResolved", "AUTOMATIC_ROSTER_PATH_RESOLVED", "Поиск списка плагинов", expectedRoster);
-            var plan = LegacyProductSelections.ReadRoster(product, projectPath, manualRosterPath, adapter);
-            if (localProfile is not null && selected.Id == "plant3d" && !string.Equals(Path.GetFullPath(plan.RosterPath), Path.GetFullPath(localProfile.DownloadListPath), StringComparison.OrdinalIgnoreCase))
-                throw new InvalidOperationException("LOCAL_PARITY_ROSTER_PROFILE_MISMATCH");
+            var plan = LegacyProductSelections.ReadRoster(product, projectPath, manualRosterPath, adapter, localProfile?.Root);
             orderedIds = string.Join(", ", plan.OrderedIds);
+            selectedRosterSnapshotPath = plan.SnapshotPath ?? plan.RosterPath;
+            if (plan.SnapshotSha256 is not null) detail = $"Roster snapshot SHA-256: {plan.SnapshotSha256}";
             Plugins.ItemsSource = plan.OrderedIds;
             Plugins.IsEnabled = false;
             PluginStatus.Text = "Источник списка: " + (manualRosterPath is null ? "Автоматически" : "Выбран вручную");
@@ -126,7 +127,14 @@ public partial class MainWindow : System.Windows.Window
                 Transition("PackageMappingFailed", "PACKAGE_MAPPING_NOT_FOUND", "Для выбранных плагинов отсутствуют пакеты 2026");
                 return;
             }
-            ValidateLocalProfileDefinitions(plan);
+            var unmapped = EvaluateLocalProfileDefinitions(plan);
+            if (unmapped.Count > 0)
+            {
+                mappingState = "Known legacy plugin, package 2026 absent: " + string.Join(", ", unmapped);
+                StartButton.IsEnabled = false;
+                Transition("PackageMappingFailed", "PACKAGE_MAPPING_NOT_FOUND", "Для части плагинов проекта пока отсутствуют пакеты версии 2026");
+                return;
+            }
             mappingState = "Mapped";
             StartButton.IsEnabled = true;
             Transition("Ready", "READY", "Готово к запуску");
@@ -134,13 +142,22 @@ public partial class MainWindow : System.Windows.Window
         catch (Exception ex) { ReportFailure(ex, "RosterResolutionFailed"); }
     }
 
-    private void ValidateLocalProfileDefinitions(LegacyPluginPlan plan)
+    private IReadOnlyList<string> EvaluateLocalProfileDefinitions(LegacyPluginPlan plan)
     {
         var settings = adapter.ParseSettings(File.ReadAllText(localProfile!.SettingsPath));
         var selectedPattern = settings.Patterns.SingleOrDefault(x => string.Equals(x.Name, localProfile.PatternName, StringComparison.Ordinal));
         if (selectedPattern is null) throw new InvalidOperationException("LOCAL_PARITY_PATTERN_NOT_FOUND");
         var overlay = LegacyCompatibilityOverlayParser.Parse(File.ReadAllText(localProfile.OverlayPath));
-        adapter.Join(selectedPattern, new LegacyDownloadSelection(plan.OrderedIds), overlay);
+        var missing = new List<string>();
+        foreach (var id in plan.OrderedIds.Distinct(StringComparer.OrdinalIgnoreCase))
+        {
+            var definitions = selectedPattern.Plugins.Where(x => string.Equals(x.Id, id, StringComparison.OrdinalIgnoreCase)).ToArray();
+            if (definitions.Length == 0) throw new InvalidOperationException("LEGACY_PLUGIN_ID_NOT_DEFINED");
+            if (definitions.Length > 1) throw new InvalidOperationException("AMBIGUOUS_LEGACY_PLUGIN_DEFINITION");
+            if (!definitions[0].IsAllowedOn(Environment.MachineName)) { missing.Add(id + " (machine restricted)"); continue; }
+            if (!overlay.Plugins.Any(x => string.Equals(x.LegacyId, id, StringComparison.OrdinalIgnoreCase))) missing.Add(id);
+        }
+        return missing;
     }
 
     private async void Start_Click(object sender, System.Windows.RoutedEventArgs e)
@@ -151,7 +168,7 @@ public partial class MainWindow : System.Windows.Window
         {
             preparationState = "InProgress";
             Transition("PackagePreparation", "PACKAGE_PREPARING", "Подготовка плагинов");
-            var profile = manualRosterPath is null ? localProfile : localProfile with { DownloadListPath = manualRosterPath };
+            var profile = localProfile with { DownloadListPath = selectedRosterSnapshotPath ?? localProfile.DownloadListPath };
             var prepared = await localService.PrepareAsync(profile, CancellationToken.None);
             preparationState = "Succeeded";
             activationState = prepared.Activation.Outcome;
@@ -174,6 +191,7 @@ public partial class MainWindow : System.Windows.Window
         Plugins.IsEnabled = false;
         StartButton.IsEnabled = false;
         pattern = expectedRoster = orderedIds = detail = "";
+        selectedRosterSnapshotPath = null;
         mappingState = preparationState = activationState = bootstrapState = processState = "NotStarted";
         processId = null;
         packageLoadMarker = "NotStarted";