Correct Generated JSON for UPlay Games Fixes #27

- Correctts the invalid comma in the generated JSON for games that utilize the UPlay unlocker.

CreamInstaller/Components/CustomTreeView.cs

@@ -14,8 +14,10 @@ namespace CreamInstaller.Components;
 internal sealed class CustomTreeView : TreeView
 {
     private const string ProxyToggleString = "Proxy";
+    private const string ExtraProtectionToggleString = "Extra Protection";
 
     private readonly Dictionary<Selection, Rectangle> checkBoxBounds = [];
+    private readonly Dictionary<Selection, Rectangle> extraProtectionCheckBoxBounds = [];
     private readonly Dictionary<Selection, Rectangle> comboBoxBounds = [];
 
     private readonly Dictionary<TreeNode, Rectangle> selectionBounds = [];
@@ -62,6 +64,7 @@ internal sealed class CustomTreeView : TreeView
     private void OnInvalidated(object sender, EventArgs e)
     {
         checkBoxBounds.Clear();
+        extraProtectionCheckBoxBounds.Clear();
         comboBoxBounds.Clear();
         selectionBounds.Clear();
         backBrush?.Dispose();
@@ -254,6 +257,93 @@ internal sealed class CustomTreeView : TreeView
                     graphics.FillRectangle(brush, bounds);
                 }
 
+                // Unlocker badge
+                if (selection.InstalledUnlocker != InstalledUnlocker.None)
+                {
+                    string badgeText = selection.InstalledUnlocker.ToString();
+                    size = TextRenderer.MeasureText(graphics, badgeText, font, Size.Empty, TextFormatFlags.NoPadding);
+                    const int badgePadding = 3;
+                    Rectangle badgeBounds = new(bounds.X + bounds.Width + 2, bounds.Y + 1, size.Width + badgePadding * 2, bounds.Height - 2);
+                    selectionBounds = new(selectionBounds.Location, selectionBounds.Size + new Size(badgeBounds.Width + 2, 0));
+
+                    // Get theme-appropriate colors for each unlocker from ThemeManager
+                    Color badgeBack, badgeBorder;
+                    switch (selection.InstalledUnlocker)
+                    {
+                        case InstalledUnlocker.SmokeAPI:
+                            badgeBack = highlighted 
+                                ? ThemeManager.SmokeAPIBadgeBackgroundHighlightColor 
+                                : ThemeManager.SmokeAPIBadgeBackgroundColor;
+                            badgeBorder = ThemeManager.SmokeAPIBadgeBorderColor;
+                            break;
+                        case InstalledUnlocker.CreamAPI:
+                            badgeBack = highlighted 
+                                ? ThemeManager.CreamAPIBadgeBackgroundHighlightColor 
+                                : ThemeManager.CreamAPIBadgeBackgroundColor;
+                            badgeBorder = ThemeManager.CreamAPIBadgeBorderColor;
+                            break;
+                        default:
+                            badgeBack = highlighted 
+                                ? ThemeManager.DefaultBadgeBackgroundHighlightColor 
+                                : ThemeManager.DefaultBadgeBackgroundColor;
+                            badgeBorder = ThemeManager.DefaultBadgeBorderColor;
+                            break;
+                    }
+
+                    using (SolidBrush badgeBrush = new(badgeBack))
+                        graphics.FillRectangle(badgeBrush, badgeBounds);
+                    using (Pen badgePen = new(badgeBorder))
+                        graphics.DrawRectangle(badgePen, badgeBounds);
+                    TextRenderer.DrawText(graphics, badgeText, font,
+                        new Point(badgeBounds.X + badgePadding, badgeBounds.Y + 1),
+                        Color.White, TextFormatFlags.NoPadding);
+                    bounds = bounds with { X = badgeBounds.X, Width = badgeBounds.Width + 2 };
+                }
+
+                // Show Extra Protection checkbox for CreamAPI:
+                // - When CreamAPI is installed, OR
+                // - When no unlocker is installed yet AND user hasn't enabled SmokeAPI mode, OR
+                // - When SmokeAPI is installed BUT user has disabled SmokeAPI mode (about to replace with CreamAPI)
+                bool showExtraProtection = selection.InstalledUnlocker == InstalledUnlocker.CreamAPI ||
+                    (selection.InstalledUnlocker == InstalledUnlocker.None && !Program.UseSmokeAPI) ||
+                    (selection.InstalledUnlocker == InstalledUnlocker.SmokeAPI && !Program.UseSmokeAPI);
+
+                if (showExtraProtection)
+                {
+                    CheckBoxState extraProtState = selection.UseExtraProtection
+                        ? (Enabled ? CheckBoxState.CheckedNormal : CheckBoxState.CheckedDisabled)
+                        : (Enabled ? CheckBoxState.UncheckedNormal : CheckBoxState.UncheckedDisabled);
+                    size = CheckBoxRenderer.GetGlyphSize(graphics, extraProtState);
+                    bounds = bounds with { X = bounds.X + bounds.Width, Width = size.Width };
+                    selectionBounds = new(selectionBounds.Location, selectionBounds.Size + bounds.Size with { Height = 0 });
+                    Rectangle extraProtCheckBoxBounds = bounds;
+                    graphics.FillRectangle(brush, bounds);
+                    point = new(bounds.Left, bounds.Top + bounds.Height / 2 - size.Height / 2 - 1);
+                    if (dark)
+                        ThemeManager.DrawDarkCheckBox(graphics, point, size, selection.UseExtraProtection, Enabled);
+                    else
+                        CheckBoxRenderer.DrawCheckBox(graphics, point, extraProtState);
+
+                    text = ExtraProtectionToggleString;
+                    size = TextRenderer.MeasureText(graphics, text, font);
+                    int leftEP = 1;
+                    bounds = bounds with { X = bounds.X + bounds.Width, Width = size.Width + leftEP };
+                    selectionBounds = new(selectionBounds.Location, selectionBounds.Size + bounds.Size with { Height = 0 });
+                    extraProtCheckBoxBounds = new(extraProtCheckBoxBounds.Location, extraProtCheckBoxBounds.Size + bounds.Size with { Height = 0 });
+                    graphics.FillRectangle(brush, bounds);
+                    point = new(bounds.Location.X - 1 + leftEP, bounds.Location.Y + 1);
+                    TextRenderer.DrawText(graphics, text, font, point,
+                        Enabled ? ThemeManager.CustomTreeViewProxyColor : ThemeManager.CustomTreeViewDisabledProxyColor,
+                        TextFormatFlags.Default);
+
+                    extraProtectionCheckBoxBounds[selection] = RectangleToClient(extraProtCheckBoxBounds);
+
+                    // Add spacing before proxy checkbox
+                    size = new(4, 0);
+                    bounds = bounds with { X = bounds.X + bounds.Width, Width = size.Width };
+                    graphics.FillRectangle(brush, bounds);
+                }
+
                 CheckBoxState proxyState = selection.UseProxy
                     ? (Enabled ? CheckBoxState.CheckedNormal : CheckBoxState.CheckedDisabled)
                     : (Enabled ? CheckBoxState.UncheckedNormal : CheckBoxState.UncheckedDisabled);
@@ -399,5 +489,15 @@ internal sealed class CustomTreeView : TreeView
                 selectForm?.OnProxyChanged();
                 break;
             }
+
+        foreach (KeyValuePair<Selection, Rectangle> pair in extraProtectionCheckBoxBounds)
+            if (!Selection.All.ContainsKey(pair.Key))
+                _ = extraProtectionCheckBoxBounds.Remove(pair.Key);
+            else if (pair.Value.Contains(clickPoint))
+            {
+                pair.Key.UseExtraProtection = !pair.Key.UseExtraProtection;
+                selectForm?.OnExtraProtectionChanged();
+                break;
+            }
     }
 }

CreamInstaller/Forms/DebugForm.cs

@@ -9,6 +9,7 @@ namespace CreamInstaller.Forms;
 internal sealed partial class DebugForm : CustomForm
 {
     private static DebugForm current;
+    private static readonly object currentLock = new();
 
     private Form attachedForm;
 
@@ -22,9 +23,14 @@ internal sealed partial class DebugForm : CustomForm
     {
         get
         {
-            if (current is not null && (current.Disposing || current.IsDisposed))
-                current = null;
-            return current ??= new();
+            lock (currentLock)
+            {
+                if (current is null || current.Disposing || current.IsDisposed)
+                {
+                    current = new DebugForm();
+                }
+                return current;
+            }
         }
     }
 

CreamInstaller/Forms/InstallForm.cs

@@ -9,7 +9,6 @@ using CreamInstaller.Resources;
 using CreamInstaller.Utility;
 using static CreamInstaller.Platforms.Paradox.ParadoxLauncher;
 using static CreamInstaller.Resources.Resources;
-
 namespace CreamInstaller.Forms;
 
 internal sealed partial class InstallForm : CustomForm
@@ -351,6 +350,41 @@ internal sealed partial class InstallForm : CustomForm
             ++completeOperationsCount;
         }
 
+        // Persist install/uninstall results
+        foreach (Selection selection in Selection.AllEnabled)
+        {
+            if (uninstalling)
+            {
+                selection.InstalledUnlocker = InstalledUnlocker.None;
+                ProgramData.RemoveInstalledGame(selection.Platform, selection.Id);
+            }
+            else
+            {
+                InstalledUnlocker unlocker = selection.DetectInstalledUnlocker();
+                selection.InstalledUnlocker = unlocker;
+                if (unlocker != InstalledUnlocker.None)
+                    ProgramData.UpsertInstalledGame(new InstalledGameRecord
+                    {
+                        Platform = selection.Platform,
+                        Id = selection.Id,
+                        Name = selection.Name,
+                        RootDirectory = selection.RootDirectory,
+                        Unlocker = unlocker,
+                        UseProxy = selection.UseProxy,
+                        Proxy = selection.Proxy,
+                        UseExtraProtection = selection.UseExtraProtection,
+                        Dlc = selection.DLC.Select(dlc => new InstalledDlcRecord
+                        {
+                            DlcType = dlc.Type.ToString(),
+                            Id = dlc.Id,
+                            Name = dlc.Name
+                        }).ToList()
+                    });
+            }
+        }
+
+        SelectForm.Current?.Invoke(() => SelectForm.Current?.InvalidateGameList());
+
         Program.Cleanup();
         int activeCount = activeSelections.Count;
         if (activeCount > 0)
@@ -392,25 +426,29 @@ internal sealed partial class InstallForm : CustomForm
 
     private void OnLoad(object sender, EventArgs a)
     {
-        retry:
-        try
+        bool retry = true;
+        while (retry)
         {
-            userInfoLabel.Text = "Loading . . . ";
-            logTextBox.Text = string.Empty;
-            selectionCount = 0;
-            foreach (Selection selection in Selection.AllEnabled)
+            try
             {
-                selectionCount++;
-                _ = activeSelections.Add(selection);
-            }
+                userInfoLabel.Text = "Loading . . . ";
+                logTextBox.Text = string.Empty;
+                selectionCount = 0;
+                foreach (Selection selection in Selection.AllEnabled)
+                {
+                    selectionCount++;
+                    _ = activeSelections.Add(selection);
+                }
 
-            Start();
-        }
-        catch (Exception e)
-        {
-            if (e.HandleException(this))
-                goto retry;
-            Close();
+                Start();
+                retry = false;
+            }
+            catch (Exception e)
+            {
+                retry = e.HandleException(this);
+                if (!retry)
+                    Close();
+            }
         }
     }
 

CreamInstaller/Forms/SelectForm.cs

@@ -25,6 +25,7 @@ internal sealed partial class SelectForm : CustomForm
     private const string HelpButtonListPrefix = "\n    •  ";
 
     private static SelectForm current;
+    private static readonly object currentLock = new();
 
     private readonly ConcurrentDictionary<string, string> remainingDLCs = new();
 
@@ -43,9 +44,14 @@ internal sealed partial class SelectForm : CustomForm
     {
         get
         {
-            if (current is not null && (current.Disposing || current.IsDisposed))
-                current = null;
-            return current ??= new();
+            lock (currentLock)
+            {
+                if (current is null || current.Disposing || current.IsDisposed)
+                {
+                    current = new SelectForm();
+                }
+                return current;
+            }
         }
     }
 
@@ -241,7 +247,7 @@ internal sealed partial class SelectForm : CustomForm
                                 string dlcName = null;
                                 string dlcIcon = null;
                                 bool onSteamStore = false;
-                                StoreAppData dlcStoreAppData = await SteamStore.QueryStoreAPI(dlcAppId, true);
+                                StoreAppData dlcStoreAppData = await SteamStore.QueryStoreAPI(dlcAppId, true, 0, name, appId);
                                 if (dlcStoreAppData is not null)
                                 {
                                     dlcName = dlcStoreAppData.Name;
@@ -271,7 +277,7 @@ internal sealed partial class SelectForm : CustomForm
                                     string fullGameIcon = null;
                                     bool fullGameOnSteamStore = false;
                                     StoreAppData fullGameStoreAppData =
-                                        await SteamStore.QueryStoreAPI(fullGameAppId, true);
+                                        await SteamStore.QueryStoreAPI(fullGameAppId, true, 0, null, null);
                                     if (fullGameStoreAppData is not null)
                                     {
                                         fullGameName = fullGameStoreAppData.Name;
@@ -550,27 +556,29 @@ internal sealed partial class SelectForm : CustomForm
 
     private async void OnLoad(bool forceScan = false, bool forceProvideChoices = false)
     {
-        Program.Canceled = false;
-        blockedGamesCheckBox.Enabled = false;
-        blockProtectedHelpButton.Enabled = false;
-        useSmokeAPICheckBox.Enabled = false;
-        useSmokeAPIHelpButton.Enabled = false;
-        cancelButton.Enabled = true;
-        scanButton.Enabled = false;
-        noneFoundLabel.Visible = false;
-        allCheckBox.Enabled = false;
-        proxyAllCheckBox.Enabled = false;
-        installButton.Enabled = false;
-        uninstallButton.Enabled = installButton.Enabled;
-        selectionTreeView.Enabled = false;
-        saveButton.Enabled = false;
-        loadButton.Enabled = false;
-        resetButton.Enabled = false;
-        progressLabel.Text = "Waiting for user to select which programs/games to scan . . .";
-        ShowProgressBar();
-        await ProgramData.Setup(this);
-        ProgramData.ClearLog();
-        ProgramData.Log($"[Scan] CreamInstaller {Program.Version} — scan started at {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss} UTC");
+        try
+        {
+            Program.Canceled = false;
+            blockedGamesCheckBox.Enabled = false;
+            blockProtectedHelpButton.Enabled = false;
+            useSmokeAPICheckBox.Enabled = false;
+            useSmokeAPIHelpButton.Enabled = false;
+            cancelButton.Enabled = true;
+            scanButton.Enabled = false;
+            noneFoundLabel.Visible = false;
+            allCheckBox.Enabled = false;
+            proxyAllCheckBox.Enabled = false;
+            installButton.Enabled = false;
+            uninstallButton.Enabled = installButton.Enabled;
+            selectionTreeView.Enabled = false;
+            saveButton.Enabled = false;
+            loadButton.Enabled = false;
+            resetButton.Enabled = false;
+            progressLabel.Text = "Waiting for user to select which programs/games to scan . . .";
+            ShowProgressBar();
+            await ProgramData.Setup(this);
+            ProgramData.ClearLog();
+            ProgramData.Log($"[Scan] CreamInstaller {Program.Version} — scan started at {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss} UTC");
         bool scan = forceScan;
         if (!scan && (programsToScan is null || programsToScan.Count < 1 || forceProvideChoices))
         {
@@ -689,6 +697,7 @@ internal sealed partial class SelectForm : CustomForm
         }
 
         OnLoadSelections(null, null);
+        await LoadSavedInstalledGames();
         HideProgressBar();
         selectionTreeView.Enabled = !Selection.All.IsEmpty;
         allCheckBox.Enabled = selectionTreeView.Enabled;
@@ -705,6 +714,23 @@ internal sealed partial class SelectForm : CustomForm
         blockProtectedHelpButton.Enabled = true;
         useSmokeAPICheckBox.Enabled = true;
         useSmokeAPIHelpButton.Enabled = true;
+        }
+        catch (Exception ex)
+        {
+            // Handle exceptions in async void to prevent unobserved exceptions
+#if DEBUG
+            System.Diagnostics.Debug.WriteLine($"OnLoad exception: {ex.Message}");
+#endif
+            // Show error and clean up
+            ex.HandleException(this);
+            HideProgressBar();
+            cancelButton.Enabled = false;
+            scanButton.Enabled = true;
+            blockedGamesCheckBox.Enabled = true;
+            blockProtectedHelpButton.Enabled = true;
+            useSmokeAPICheckBox.Enabled = true;
+            useSmokeAPIHelpButton.Enabled = true;
+        }
     }
 
     private void OnTreeViewNodeCheckedChanged(object sender, TreeViewEventArgs e)
@@ -974,20 +1000,97 @@ internal sealed partial class SelectForm : CustomForm
             contextMenuStrip.Refresh();
         });
 
+    private async Task LoadSavedInstalledGames()
+    {
+        List<InstalledGameRecord> saved = ProgramData.ReadInstalledGames();
+        if (saved.Count == 0)
+            return;
+
+        List<InstalledGameRecord> toRemove = [];
+        foreach (InstalledGameRecord record in saved)
+        {
+            // Already in the list from this scan — just ensure unlocker is set
+            Selection existing = Selection.FromId(record.Platform, record.Id);
+            if (existing is not null)
+            {
+                if (existing.InstalledUnlocker == InstalledUnlocker.None)
+                    existing.InstalledUnlocker = record.Unlocker;
+                continue;
+            }
+
+            // Root directory no longer exists — mark for removal
+            if (!record.RootDirectory.DirectoryExists())
+            {
+                toRemove.Add(record);
+                continue;
+            }
+
+            // Reconstruct a minimal Selection from the saved record
+            HashSet<string> dllDirectories =
+                await record.RootDirectory.GetDllDirectoriesFromGameDirectory(record.Platform);
+            if (dllDirectories is null || dllDirectories.Count == 0)
+            {
+                toRemove.Add(record);
+                continue;
+            }
+
+            List<(string directory, BinaryType binaryType)> executableDirectories =
+                await record.RootDirectory.GetExecutableDirectories(true);
+
+            Selection selection = Selection.FromId(record.Platform, record.Id) ?? Selection.GetOrCreate(record.Platform, record.Id, record.Name,
+                record.RootDirectory, dllDirectories, executableDirectories);
+            selection.InstalledUnlocker = selection.DetectInstalledUnlocker();
+            if (selection.InstalledUnlocker == InstalledUnlocker.None)
+                selection.InstalledUnlocker = record.Unlocker;
+            selection.UseProxy = record.UseProxy;
+            selection.Proxy = record.Proxy;
+            selection.UseExtraProtection = record.UseExtraProtection;
+
+            Invoke(delegate
+            {
+                if (selection.TreeNode.TreeView is null)
+                    _ = selectionTreeView.Nodes.Add(selection.TreeNode);
+
+                // Restore DLC children from saved record
+                if (record.Dlc != null && record.Dlc.Count > 0)
+                {
+                    foreach (InstalledDlcRecord dlcRecord in record.Dlc)
+                    {
+                        if (!Enum.TryParse(dlcRecord.DlcType, out DLCType dlcType))
+                            continue;
+                        SelectionDLC dlc = SelectionDLC.GetOrCreate(dlcType, record.Id, dlcRecord.Id, dlcRecord.Name);
+                        dlc.Selection = selection;
+                    }
+                }
+            });
+        }
+
+        // Clean up records for games that are gone
+        if (toRemove.Count > 0)
+        {
+            List<InstalledGameRecord> updated = saved.Except(toRemove).ToList();
+            ProgramData.WriteInstalledGames(updated);
+        }
+    }
+
     private void OnLoad(object sender, EventArgs _)
     {
-    retry:
-        try
+        bool retry = true;
+        while (retry)
         {
-            HideProgressBar();
-            selectionTreeView.AfterCheck += OnTreeViewNodeCheckedChanged;
-            OnLoad(forceProvideChoices: true);
-        }
-        catch (Exception e)
-        {
-            if (e.HandleException(this))
-                goto retry;
-            Close();
+            try
+            {
+                HideProgressBar();
+                selectionTreeView.AfterCheck += OnTreeViewNodeCheckedChanged;
+                OnLoad(forceProvideChoices: true);
+                retry = false;
+            }
+            catch (Exception e)
+            {
+                retry = e.HandleException(this);
+                if (!retry)
+                    Close();
+            }
         }
     }
 
@@ -1065,13 +1168,18 @@ internal sealed partial class SelectForm : CustomForm
 
     private static bool AreProxySelectionsDefault() => Selection.All.Keys.All(selection => !selection.UseProxy);
 
+    private static bool AreExtraProtectionSelectionsDefault() => Selection.All.Keys.All(selection => !selection.UseExtraProtection);
+
     private bool CanSaveDlc() =>
         installButton.Enabled && (ProgramData.ReadDlcChoices().Any() || !AreSelectionsDefault());
 
     private static bool CanSaveProxy() =>
         ProgramData.ReadProxyChoices().Any() || !AreProxySelectionsDefault();
 
-    private bool CanSaveSelections() => CanSaveDlc() || CanSaveProxy();
+    private static bool CanSaveExtraProtection() =>
+        ProgramData.ReadExtraProtectionChoices().Any() || !AreExtraProtectionSelectionsDefault();
+
+    private bool CanSaveSelections() => CanSaveDlc() || CanSaveProxy() || CanSaveExtraProtection();
 
     private void OnSaveSelections(object sender, EventArgs e)
     {
@@ -1099,6 +1207,17 @@ internal sealed partial class SelectForm : CustomForm
 
         ProgramData.WriteProxyChoices(proxyChoices);
 
+        List<(Platform platform, string id)> extraProtectionChoices =
+            ProgramData.ReadExtraProtectionChoices().ToList();
+        foreach (Selection selection in Selection.All.Keys)
+        {
+            _ = extraProtectionChoices.RemoveAll(c => c.platform == selection.Platform && c.id == selection.Id);
+            if (selection.UseExtraProtection)
+                extraProtectionChoices.Add((selection.Platform, selection.Id));
+        }
+
+        ProgramData.WriteExtraProtectionChoices(extraProtectionChoices);
+
         loadButton.Enabled = CanLoadSelections();
         saveButton.Enabled = CanSaveSelections();
     }
@@ -1107,7 +1226,9 @@ internal sealed partial class SelectForm : CustomForm
 
     private static bool CanLoadProxy() => ProgramData.ReadProxyChoices().Any();
 
-    private static bool CanLoadSelections() => CanLoadDlc() || CanLoadProxy();
+    private static bool CanLoadExtraProtection() => ProgramData.ReadExtraProtectionChoices().Any();
+
+    private static bool CanLoadSelections() => CanLoadDlc() || CanLoadProxy() || CanLoadExtraProtection();
 
     private void OnLoadSelections(object sender, EventArgs e)
     {
@@ -1149,8 +1270,31 @@ internal sealed partial class SelectForm : CustomForm
             }
 
         ProgramData.WriteProxyChoices(proxyChoices);
+
+        List<(Platform platform, string id)> extraProtectionChoices =
+            ProgramData.ReadExtraProtectionChoices().ToList();
+        foreach (Selection selection in Selection.All.Keys)
+            selection.UseExtraProtection = extraProtectionChoices.Any(c =>
+                c.platform == selection.Platform && c.id == selection.Id);
+
+        ProgramData.WriteExtraProtectionChoices(extraProtectionChoices);
         loadButton.Enabled = CanLoadSelections();
 
+        // Detect installed unlockers from disk for all selections
+        foreach (Selection selection in Selection.All.Keys)
+            selection.InstalledUnlocker = selection.DetectInstalledUnlocker();
+
+        // Merge with persisted installed game records for any saved games not yet having a detected unlocker
+        List<InstalledGameRecord> installedRecords = ProgramData.ReadInstalledGames();
+        foreach (InstalledGameRecord record in installedRecords)
+        {
+            Selection selection = Selection.FromId(record.Platform, record.Id);
+            if (selection is null)
+                continue;
+            if (selection.InstalledUnlocker == InstalledUnlocker.None && record.Unlocker != InstalledUnlocker.None)
+                selection.InstalledUnlocker = record.Unlocker;
+        }
+
         OnProxyChanged();
     }
 
@@ -1158,7 +1302,9 @@ internal sealed partial class SelectForm : CustomForm
 
     private static bool CanResetProxy() => !AreProxySelectionsDefault();
 
-    private bool CanResetSelections() => CanResetDlc() || CanResetProxy();
+    private static bool CanResetExtraProtection() => !AreExtraProtectionSelectionsDefault();
+
+    private bool CanResetSelections() => CanResetDlc() || CanResetProxy() || CanResetExtraProtection();
 
     private void OnResetSelections(object sender, EventArgs e)
     {
@@ -1172,11 +1318,14 @@ internal sealed partial class SelectForm : CustomForm
         {
             selection.UseProxy = false;
             selection.Proxy = null;
+            selection.UseExtraProtection = false;
         }
 
         OnProxyChanged();
     }
 
+    internal void InvalidateGameList() => selectionTreeView.Invalidate();
+
     internal void OnProxyChanged()
     {
         selectionTreeView.Invalidate();
@@ -1187,6 +1336,13 @@ internal sealed partial class SelectForm : CustomForm
         proxyAllCheckBox.CheckedChanged += OnProxyAllCheckBoxChanged;
     }
 
+    internal void OnExtraProtectionChanged()
+    {
+        selectionTreeView.Invalidate();
+        saveButton.Enabled = CanSaveSelections();
+        resetButton.Enabled = CanResetSelections();
+    }
+
     private void OnBlockProtectedGamesCheckBoxChanged(object sender, EventArgs e)
     {
         Program.BlockProtectedGames = blockedGamesCheckBox.Checked;
@@ -1221,7 +1377,9 @@ internal sealed partial class SelectForm : CustomForm
     private void OnUseSmokeAPICheckBoxChanged(object sender, EventArgs e)
     {
         Program.UseSmokeAPI = useSmokeAPICheckBox.Checked;
-        OnLoad(forceProvideChoices: false);
+        selectionTreeView.Invalidate();
+        saveButton.Enabled = CanSaveSelections();
+        resetButton.Enabled = CanResetSelections();
     }
 
     private void OnUseSmokeAPIHelpButtonClicked(object sender, EventArgs e)

CreamInstaller/Forms/TestGameForm.cs

@@ -81,9 +81,8 @@ internal sealed partial class TestGameForm : CustomForm
 
         string name = await Task.Run(async () =>
         {
-            // Use a dedicated client with a neutral UA so Steam's store API doesn't reject the request.
-            using System.Net.Http.HttpClient client = new();
-            client.DefaultRequestHeaders.UserAgent.ParseAdd($"{Program.Name}/{Program.Version}");
+            // Use an isolated client with neutral UA so Steam's store API doesn't reject the request.
+            using System.Net.Http.HttpClient client = HttpClientManager.CreateIsolatedClient();
             string url = $"https://store.steampowered.com/api/appdetails?appids={appId}&filters=basic";
             try
             {

CreamInstaller/Forms/UpdateForm.cs

@@ -45,77 +45,95 @@ internal sealed partial class UpdateForm : CustomForm
 
     private async void OnLoad()
     {
-        progressBar.Visible = false;
-        ignoreButton.Visible = true;
-        updateButton.Text = "Update";
-        updateButton.Click -= OnUpdateCancel;
-        progressLabel.Text = "Checking for updates . . .";
-        changelogTreeView.Visible = false;
-        changelogTreeView.Location = progressLabel.Location with
+        try
         {
-            Y = progressLabel.Location.Y + progressLabel.Size.Height + 13
-        };
-        Refresh();
-#if !DEBUG
-        Version currentVersion = new(Program.Version);
-#endif
-        List<ProgramRelease> releases = null;
-        string response =
-            await HttpClientManager.EnsureGet(
-                $"https://api.github.com/repos/{Program.RepositoryOwner}/{Program.RepositoryName}/releases");
-        if (response is not null)
-            releases = JsonConvert.DeserializeObject<List<ProgramRelease>>(response)
-                ?.Where(release => !release.Draft && !release.Prerelease && release.Asset is not null).ToList();
-        latestRelease = releases?.FirstOrDefault();
-#if DEBUG
-        if (latestRelease?.Version is not { } latestVersion)
-#else
-        if (latestRelease?.Version is not { } latestVersion || latestVersion <= currentVersion)
-#endif
-            StartProgram();
-        else
-        {
-            progressLabel.Text = $"An update is available: v{latestVersion}";
-            ignoreButton.Enabled = true;
-            updateButton.Enabled = true;
-            updateButton.Click += OnUpdate;
-            changelogTreeView.Visible = true;
-            foreach (ProgramRelease release in releases)
+            progressBar.Visible = false;
+            ignoreButton.Visible = true;
+            updateButton.Text = "Update";
+            updateButton.Click -= OnUpdateCancel;
+            progressLabel.Text = "Checking for updates . . .";
+            changelogTreeView.Visible = false;
+            changelogTreeView.Location = progressLabel.Location with
             {
+                Y = progressLabel.Location.Y + progressLabel.Size.Height + 13
+            };
+            Refresh();
 #if !DEBUG
-                if (release.Version <= currentVersion)
-                    continue;
+            Version currentVersion = new(Program.Version);
 #endif
-                TreeNode root = new(release.Name) { Name = release.Name };
-                changelogTreeView.Nodes.Add(root);
-                if (changelogTreeView.Nodes.Count > 0)
-                    changelogTreeView.Nodes[0].EnsureVisible();
-                foreach (string change in release.Changes)
-                    Invoke(delegate
-                    {
-                        TreeNode changeNode = new() { Text = change };
-                        root.Nodes.Add(changeNode);
-                        root.Expand();
-                        if (changelogTreeView.Nodes.Count > 0)
-                            changelogTreeView.Nodes[0].EnsureVisible();
-                    });
+            List<ProgramRelease> releases = null;
+            string response =
+                await HttpClientManager.EnsureGet(
+                    $"https://api.github.com/repos/{Program.RepositoryOwner}/{Program.RepositoryName}/releases");
+            if (response is not null)
+                releases = JsonConvert.DeserializeObject<List<ProgramRelease>>(response)
+                    ?.Where(release => !release.Draft && !release.Prerelease && release.Asset is not null).ToList();
+            latestRelease = releases?.FirstOrDefault();
+#if DEBUG
+            if (latestRelease?.Version is not { } latestVersion)
+#else
+            if (latestRelease?.Version is not { } latestVersion || latestVersion <= currentVersion)
+#endif
+                StartProgram();
+            else
+            {
+                progressLabel.Text = $"An update is available: v{latestVersion}";
+                ignoreButton.Enabled = true;
+                updateButton.Enabled = true;
+                updateButton.Click += OnUpdate;
+                changelogTreeView.Visible = true;
+                foreach (ProgramRelease release in releases)
+                {
+#if !DEBUG
+                    if (release.Version <= currentVersion)
+                        continue;
+#endif
+                    TreeNode root = new(release.Name) { Name = release.Name };
+                    changelogTreeView.Nodes.Add(root);
+                    if (changelogTreeView.Nodes.Count > 0)
+                        changelogTreeView.Nodes[0].EnsureVisible();
+                    foreach (string change in release.Changes)
+                        Invoke(delegate
+                        {
+                            TreeNode changeNode = new() { Text = change };
+                            root.Nodes.Add(changeNode);
+                            root.Expand();
+                            if (changelogTreeView.Nodes.Count > 0)
+                                changelogTreeView.Nodes[0].EnsureVisible();
+                        });
+                }
             }
         }
+        catch (Exception ex)
+        {
+            // Handle exceptions in async void to prevent unobserved exceptions
+#if DEBUG
+            System.Diagnostics.Debug.WriteLine($"OnLoad exception: {ex.Message}");
+            ex.HandleFatalException();
+#else
+            // In release, try to continue gracefully
+            StartProgram();
+#endif
+        }
     }
 
     private void OnLoad(object sender, EventArgs _)
     {
-        retry:
-        try
+        bool retry = true;
+        while (retry)
         {
-            UpdaterPath.DeleteFile();
-            OnLoad();
-        }
-        catch (Exception e)
-        {
-            if (e.HandleException(this))
-                goto retry;
-            Close();
+            try
+            {
+                UpdaterPath.DeleteFile();
+                OnLoad();
+                retry = false;
+            }
+            catch (Exception e)
+            {
+                retry = e.HandleException(this);
+                if (!retry)
+                    Close();
+            }
         }
     }
 
@@ -123,122 +141,135 @@ internal sealed partial class UpdateForm : CustomForm
 
     private async void OnUpdate(object sender, EventArgs e)
     {
-        progressBar.Value = 0;
-        progressBar.Visible = true;
-        ignoreButton.Visible = false;
-        updateButton.Text = "Cancel";
-        updateButton.Click -= OnUpdate;
-        updateButton.Click += OnUpdateCancel;
-        changelogTreeView.Location =
-            progressBar.Location with { Y = progressBar.Location.Y + progressBar.Size.Height + 6 };
-        Refresh();
-        Progress<int> progress = new();
-        IProgress<int> iProgress = progress;
-        progress.ProgressChanged += delegate(object _, int _progress)
-        {
-            progressLabel.Text = $"Updating . . . {_progress}%";
-            progressBar.Value = _progress;
-        };
-        progressLabel.Text = "Updating . . . ";
-        cancellation = new();
-        bool success = true;
-        PackagePath.DeleteFile(true);
-        await using FileStream update = PackagePath.CreateFile(true);
-        bool retry = true;
         try
         {
-            if (cancellation is null || Program.Canceled)
-                throw new TaskCanceledException();
-            using HttpResponseMessage response = await HttpClientManager.HttpClient.GetAsync(
-                latestRelease.Asset.BrowserDownloadUrl,
-                HttpCompletionOption.ResponseHeadersRead, cancellation.Token);
-            _ = response.EnsureSuccessStatusCode();
-            if (cancellation is null || Program.Canceled)
-                throw new TaskCanceledException();
-            await using Stream download = await response.Content.ReadAsStreamAsync(cancellation.Token);
-            double bytes = latestRelease.Asset.Size;
-            byte[] buffer = new byte[16384];
-            long bytesRead = 0;
-            int newBytes;
-            while (cancellation is not null && !Program.Canceled
-                                            && (newBytes = await download.ReadAsync(buffer.AsMemory(0, buffer.Length),
-                                                cancellation.Token)) != 0)
+            progressBar.Value = 0;
+            progressBar.Visible = true;
+            ignoreButton.Visible = false;
+            updateButton.Text = "Cancel";
+            updateButton.Click -= OnUpdate;
+            updateButton.Click += OnUpdateCancel;
+            changelogTreeView.Location =
+                progressBar.Location with { Y = progressBar.Location.Y + progressBar.Size.Height + 6 };
+            Refresh();
+            Progress<int> progress = new();
+            IProgress<int> iProgress = progress;
+            progress.ProgressChanged += delegate(object _, int _progress)
+            {
+                progressLabel.Text = $"Updating . . . {_progress}%";
+                progressBar.Value = _progress;
+            };
+            progressLabel.Text = "Updating . . . ";
+            cancellation = new();
+            bool success = true;
+            PackagePath.DeleteFile(true);
+            await using FileStream update = PackagePath.CreateFile(true);
+            bool retry = true;
+            try
             {
                 if (cancellation is null || Program.Canceled)
                     throw new TaskCanceledException();
-                await update.WriteAsync(buffer.AsMemory(0, newBytes), cancellation.Token);
-                bytesRead += newBytes;
-                int report = (int)(bytesRead / bytes * 100);
-                if (report <= progressBar.Value)
-                    continue;
-                iProgress.Report(report);
+                using HttpResponseMessage response = await HttpClientManager.HttpClient.GetAsync(
+                    latestRelease.Asset.BrowserDownloadUrl,
+                    HttpCompletionOption.ResponseHeadersRead, cancellation.Token);
+                _ = response.EnsureSuccessStatusCode();
+                if (cancellation is null || Program.Canceled)
+                    throw new TaskCanceledException();
+                await using Stream download = await response.Content.ReadAsStreamAsync(cancellation.Token);
+                double bytes = latestRelease.Asset.Size;
+                byte[] buffer = new byte[16384];
+                long bytesRead = 0;
+                int newBytes;
+                while (cancellation is not null && !Program.Canceled
+                                                && (newBytes = await download.ReadAsync(buffer.AsMemory(0, buffer.Length),
+                                                    cancellation.Token)) != 0)
+                {
+                    if (cancellation is null || Program.Canceled)
+                        throw new TaskCanceledException();
+                    await update.WriteAsync(buffer.AsMemory(0, newBytes), cancellation.Token);
+                    bytesRead += newBytes;
+                    int report = (int)(bytesRead / bytes * 100);
+                    if (report <= progressBar.Value)
+                        continue;
+                    iProgress.Report(report);
+                }
+
+                iProgress.Report((int)(bytesRead / bytes * 100));
+                if (cancellation is null || Program.Canceled)
+                    throw new TaskCanceledException();
+            }
+            catch (TaskCanceledException)
+            {
+                success = false;
+            }
+            catch (Exception ex)
+            {
+                retry = ex.HandleException(this, Program.Name + " encountered an exception while updating");
+                success = false;
             }
 
-            iProgress.Report((int)(bytesRead / bytes * 100));
-            if (cancellation is null || Program.Canceled)
-                throw new TaskCanceledException();
-        }
-        catch (TaskCanceledException)
-        {
-            success = false;
+            cancellation?.Dispose();
+            cancellation = null;
+            await update.DisposeAsync();
+            bool canContinue = success && !Program.Canceled;
+            if (canContinue)
+                updateButton.Enabled = false;
+            ExecutablePath.DeleteFile(canContinue);
+            if (canContinue)
+                await Task.Run(() => PackagePath.ExtractZip(ProgramData.DirectoryPath, true, this));
+            PackagePath.DeleteFile(canContinue);
+            if (canContinue)
+            {
+                string path = Program.CurrentProcessFilePath;
+                string directory = Path.GetDirectoryName(path);
+                string file = Path.GetFileName(path);
+                StringBuilder commands = new();
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"chcp 65001");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $":LOOP");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"TASKKILL /F /T /PID {Program.CurrentProcessId}");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"TASKLIST | FIND \" {Program.CurrentProcessId} \"");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"IF NOT ERRORLEVEL 1 (");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"   TIMEOUT /T 1");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"   GOTO LOOP");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $")");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"MOVE /Y \"{ExecutablePath}\" \"{path}\"");
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"START \"\" /D \"{directory}\" \"{file}\"");
+#if DEBUG
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"PAUSE");
+#endif
+                _ = commands.AppendLine(CultureInfo.InvariantCulture, $"EXIT");
+                UpdaterPath.WriteFile(commands.ToString(), true, this, Encoding.Default);
+                Process process = new();
+                ProcessStartInfo startInfo = new()
+                {
+                    WorkingDirectory = ProgramData.DirectoryPath, FileName = "cmd.exe",
+                    Arguments = $"/C START \"UPDATER\" /B {Path.GetFileName(UpdaterPath)}",
+#if DEBUG
+                    CreateNoWindow = false
+#else
+                    CreateNoWindow = true
+#endif
+                };
+                process.StartInfo = startInfo;
+                _ = process.Start();
+                return;
+            }
+
+            if (!retry)
+                StartProgram();
+            else
+                OnLoad();
         }
         catch (Exception ex)
         {
-            retry = ex.HandleException(this, Program.Name + " encountered an exception while updating");
-            success = false;
-        }
-
-        cancellation?.Dispose();
-        cancellation = null;
-        await update.DisposeAsync();
-        bool canContinue = success && !Program.Canceled;
-        if (canContinue)
-            updateButton.Enabled = false;
-        ExecutablePath.DeleteFile(canContinue);
-        if (canContinue)
-            await Task.Run(() => PackagePath.ExtractZip(ProgramData.DirectoryPath, true, this));
-        PackagePath.DeleteFile(canContinue);
-        if (canContinue)
-        {
-            string path = Program.CurrentProcessFilePath;
-            string directory = Path.GetDirectoryName(path);
-            string file = Path.GetFileName(path);
-            StringBuilder commands = new();
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"chcp 65001");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $":LOOP");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"TASKKILL /F /T /PID {Program.CurrentProcessId}");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"TASKLIST | FIND \" {Program.CurrentProcessId} \"");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"IF NOT ERRORLEVEL 1 (");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"   TIMEOUT /T 1");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"   GOTO LOOP");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $")");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"MOVE /Y \"{ExecutablePath}\" \"{path}\"");
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"START \"\" /D \"{directory}\" \"{file}\"");
+            // Handle exceptions in async void event handler to prevent unobserved exceptions
 #if DEBUG
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"PAUSE");
+            System.Diagnostics.Debug.WriteLine($"OnUpdate exception: {ex.Message}");
 #endif
-            _ = commands.AppendLine(CultureInfo.InvariantCulture, $"EXIT");
-            UpdaterPath.WriteFile(commands.ToString(), true, this, Encoding.Default);
-            Process process = new();
-            ProcessStartInfo startInfo = new()
-            {
-                WorkingDirectory = ProgramData.DirectoryPath, FileName = "cmd.exe",
-                Arguments = $"/C START \"UPDATER\" /B {Path.GetFileName(UpdaterPath)}",
-#if DEBUG
-                CreateNoWindow = false
-#else
-                CreateNoWindow = true
-#endif
-            };
-            process.StartInfo = startInfo;
-            _ = process.Start();
-            return;
-        }
-
-        if (!retry)
+            // Show error to user
+            ex.HandleException(this, Program.Name + " encountered an unexpected error during update");
             StartProgram();
-        else
-            OnLoad();
+        }
     }
 
     private void OnUpdateCancel(object sender, EventArgs e)

CreamInstaller/Platforms/Steam/SteamCMD.cs

@@ -46,82 +46,84 @@ internal static partial class SteamCMD
     private static async Task<string> Run(string appId)
         => await Task.Run(() =>
         {
-            wait_for_lock:
-            if (Program.Canceled)
-                return "";
-            for (int i = 0; i < Locks.Length; i++)
+            while (true)
             {
                 if (Program.Canceled)
                     return "";
-                if (Interlocked.CompareExchange(ref Locks[i], 1, 0) != 0)
-                    continue;
-                if (appId != null)
-                {
-                    _ = AttemptCount.TryGetValue(appId, out int count);
-                    AttemptCount[appId] = ++count;
-                }
 
-                if (Program.Canceled)
-                    return "";
-                ProcessStartInfo processStartInfo = new()
-                {
-                    FileName = FilePath, RedirectStandardOutput = true, RedirectStandardInput = true,
-                    RedirectStandardError = true,
-                    UseShellExecute = false, Arguments = appId is null ? "+quit" : GetArguments(appId),
-                    CreateNoWindow = true,
-                    StandardInputEncoding = Encoding.UTF8, StandardOutputEncoding = Encoding.UTF8,
-                    StandardErrorEncoding = Encoding.UTF8
-                };
-                Process process = Process.Start(processStartInfo);
-                StringBuilder output = new();
-                StringBuilder appInfo = new();
-                bool appInfoStarted = false;
-                DateTime lastOutput = DateTime.UtcNow;
-                while (process != null)
+                for (int i = 0; i < Locks.Length; i++)
                 {
                     if (Program.Canceled)
+                        return "";
+                    if (Interlocked.CompareExchange(ref Locks[i], 1, 0) != 0)
+                        continue;
+                    if (appId != null)
                     {
+                        _ = AttemptCount.TryGetValue(appId, out int count);
+                        AttemptCount[appId] = ++count;
+                    }
+
+                    if (Program.Canceled)
+                        return "";
+                    ProcessStartInfo processStartInfo = new()
+                    {
+                        FileName = FilePath, RedirectStandardOutput = true, RedirectStandardInput = true,
+                        RedirectStandardError = true,
+                        UseShellExecute = false, Arguments = appId is null ? "+quit" : GetArguments(appId),
+                        CreateNoWindow = true,
+                        StandardInputEncoding = Encoding.UTF8, StandardOutputEncoding = Encoding.UTF8,
+                        StandardErrorEncoding = Encoding.UTF8
+                    };
+                    Process process = Process.Start(processStartInfo);
+                    StringBuilder output = new();
+                    StringBuilder appInfo = new();
+                    bool appInfoStarted = false;
+                    DateTime lastOutput = DateTime.UtcNow;
+                    while (process != null)
+                    {
+                        if (Program.Canceled)
+                        {
+                            process.Kill(true);
+                            process.Close();
+                            break;
+                        }
+
+                        int c = process.StandardOutput.Read();
+                        if (c != -1)
+                        {
+                            lastOutput = DateTime.UtcNow;
+                            char ch = (char)c;
+                            if (ch == '{')
+                                appInfoStarted = true;
+                            _ = appInfoStarted ? appInfo.Append(ch) : output.Append(ch);
+                        }
+
+                        DateTime now = DateTime.UtcNow;
+                        TimeSpan timeDiff = now - lastOutput;
+                        if (!(timeDiff.TotalSeconds > 0.1))
+                            continue;
                         process.Kill(true);
                         process.Close();
-                        break;
+                        if (appId != null &&
+                            output.ToString().Contains($"No app info for AppID {appId} found, requesting..."))
+                        {
+                            AttemptCount[appId]++;
+                            processStartInfo.Arguments = GetArguments(appId);
+                            process = Process.Start(processStartInfo);
+                            appInfoStarted = false;
+                            _ = output.Clear();
+                            _ = appInfo.Clear();
+                        }
+                        else
+                            break;
                     }
 
-                    int c = process.StandardOutput.Read();
-                    if (c != -1)
-                    {
-                        lastOutput = DateTime.UtcNow;
-                        char ch = (char)c;
-                        if (ch == '{')
-                            appInfoStarted = true;
-                        _ = appInfoStarted ? appInfo.Append(ch) : output.Append(ch);
-                    }
-
-                    DateTime now = DateTime.UtcNow;
-                    TimeSpan timeDiff = now - lastOutput;
-                    if (!(timeDiff.TotalSeconds > 0.1))
-                        continue;
-                    process.Kill(true);
-                    process.Close();
-                    if (appId != null &&
-                        output.ToString().Contains($"No app info for AppID {appId} found, requesting..."))
-                    {
-                        AttemptCount[appId]++;
-                        processStartInfo.Arguments = GetArguments(appId);
-                        process = Process.Start(processStartInfo);
-                        appInfoStarted = false;
-                        _ = output.Clear();
-                        _ = appInfo.Clear();
-                    }
-                    else
-                        break;
+                    _ = Interlocked.Decrement(ref Locks[i]);
+                    return appInfo.ToString();
                 }
 
-                _ = Interlocked.Decrement(ref Locks[i]);
-                return appInfo.ToString();
+                Thread.Sleep(200);
             }
-
-            Thread.Sleep(200);
-            goto wait_for_lock;
         });
 
     internal static async Task<bool> Setup(IProgress<int> progress)
@@ -129,27 +131,39 @@ internal static partial class SteamCMD
         await Cleanup();
         if (!FilePath.FileExists())
         {
-            retryDownload:
-            HttpClient httpClient = HttpClientManager.HttpClient;
-            if (httpClient is null)
-                return false;
-            while (!Program.Canceled)
-                try
-                {
-                    byte[] file =
-                        await httpClient.GetByteArrayAsync(
-                            new Uri("https://steamcdn-a.akamaihd.net/client/installer/steamcmd.zip"));
-                    _ = file.WriteResource(ArchivePath);
-                    ArchivePath.ExtractZip(DirectoryPath);
-                    ArchivePath.DeleteFile();
-                    break;
-                }
-                catch (Exception e)
-                {
-                    if (e.HandleException(caption: Program.Name + " failed to download SteamCMD"))
-                        goto retryDownload;
+            bool retryDownload = true;
+            while (retryDownload)
+            {
+                HttpClient httpClient = HttpClientManager.HttpClient;
+                if (httpClient is null)
                     return false;
+
+                bool downloadSuccess = false;
+                while (!Program.Canceled && !downloadSuccess)
+                {
+                    try
+                    {
+                        byte[] file =
+                            await httpClient.GetByteArrayAsync(
+                                new Uri("https://steamcdn-a.akamaihd.net/client/installer/steamcmd.zip"));
+                        _ = file.WriteResource(ArchivePath);
+                        ArchivePath.ExtractZip(DirectoryPath);
+                        ArchivePath.DeleteFile();
+                        downloadSuccess = true;
+                        retryDownload = false;
+                    }
+                    catch (Exception e)
+                    {
+                        retryDownload = e.HandleException(caption: Program.Name + " failed to download SteamCMD");
+                        if (!retryDownload)
+                            return false;
+                        break;
+                    }
                 }
+
+                if (downloadSuccess)
+                    break;
+            }
         }
 
         if (DllPath.FileExists())

CreamInstaller/Platforms/Steam/SteamStore.cs

@@ -18,6 +18,25 @@ internal static class SteamStore
     private const int CooldownGame = 600;
     private const int CooldownDlc = 1200;
 
+#if DEBUG
+    private static string FormatErrorLog(int attempts, string appId, string gameName, bool isDlc, string reason, 
+        string parentGameName = null, string parentGameAppId = null)
+    {
+        if (isDlc && parentGameName != null && parentGameAppId != null)
+        {
+            return $"[SteamQuery][Attempt {attempts}][FAILED]\n" +
+                   $"BaseGame: \"{parentGameName}\" ({parentGameAppId})\n" +
+                   $"DLC: \"{gameName}\" ({appId})\n" +
+                   $"Type: DLC\n" +
+                   $"Reason: {reason}\n" +
+                   "-------";
+        }
+
+        string type = isDlc ? "DLC" : "Game";
+        return $"[SteamQuery][Attempt {attempts}][FAILED] AppId: {appId} | Name: \"{gameName}\" | Type: {type} | Reason: {reason}";
+    }
+#endif
+
     internal static async Task<HashSet<string>> ParseDlcAppIds(StoreAppData storeAppData)
         => await Task.Run(() =>
         {
@@ -31,8 +50,9 @@ internal static class SteamStore
             return dlcIds;
         });
 
-    internal static async Task<StoreAppData> QueryStoreAPI(string appId, bool isDlc = false, int attempts = 0)
+    internal static async Task<StoreAppData> QueryStoreAPI(string appId, bool isDlc = false, int attempts = 0, string parentGameName = null, string parentGameAppId = null)
     {
+        string gameName = "Unknown";
         while (!Program.Canceled)
         {
             attempts++;
@@ -55,13 +75,14 @@ internal static class SteamStore
                                 if (storeAppDetails is not null)
                                 {
                                     StoreAppData data = storeAppDetails.Data;
+                                    if (data?.Name is not null)
+                                        gameName = data.Name;
+
                                     if (!storeAppDetails.Success)
                                     {
 #if DEBUG
                                         DebugForm.Current.Log(
-                                            "Steam store query failed on attempt #" + attempts + " for " + appId +
-                                            (isDlc ? " (DLC)" : "")
-                                            + ": Query unsuccessful (" + app.Value.ToString(Formatting.None) + ")",
+                                            FormatErrorLog(attempts, appId, gameName, isDlc, "Query unsuccessful", parentGameName, parentGameAppId),
                                             LogTextBox.Warning);
 #endif
                                         if (data is null)
@@ -78,9 +99,8 @@ internal static class SteamStore
 #if DEBUG
                                             (Exception e)
                                         {
-                                            DebugForm.Current.Log("Steam store query failed on attempt #" + attempts +
-                                                                  " for " + appId + (isDlc ? " (DLC)" : "")
-                                                                  + ": Unsuccessful serialization (" + e.Message + ")");
+                                            DebugForm.Current.Log(
+                                                FormatErrorLog(attempts, appId, gameName, isDlc, $"Unsuccessful serialization ({e.Message})", parentGameName, parentGameAppId));
                                         }
 #else
                                         {
@@ -90,27 +110,24 @@ internal static class SteamStore
                                         return data;
                                     }
 #if DEBUG
-                                    DebugForm.Current.Log("Steam store query failed on attempt #" + attempts + " for " +
-                                                          appId + (isDlc ? " (DLC)" : "")
-                                                          + ": Response data null (" +
-                                                          app.Value.ToString(Formatting.None) + ")");
+                                    DebugForm.Current.Log(
+                                        FormatErrorLog(attempts, appId, gameName, isDlc, "Response data null", parentGameName, parentGameAppId));
 #endif
                                 }
 #if DEBUG
                                 else
-                                    DebugForm.Current.Log("Steam store query failed on attempt #" + attempts + " for " +
-                                                          appId + (isDlc ? " (DLC)" : "")
-                                                          + ": Response details null (" +
-                                                          app.Value.ToString(Formatting.None) + ")");
+                                {
+                                    DebugForm.Current.Log(
+                                        FormatErrorLog(attempts, appId, gameName, isDlc, "Response details null", parentGameName, parentGameAppId));
+                                }
 #endif
                             }
                             catch
 #if DEBUG
                                 (Exception e)
                             {
-                                DebugForm.Current.Log("Steam store query failed on attempt #" + attempts + " for " +
-                                                      appId + (isDlc ? " (DLC)" : "")
-                                                      + ": Unsuccessful deserialization (" + e.Message + ")");
+                                DebugForm.Current.Log(
+                                    FormatErrorLog(attempts, appId, gameName, isDlc, $"Unsuccessful deserialization ({e.Message})", parentGameName, parentGameAppId));
                             }
 #else
                             {
@@ -119,17 +136,19 @@ internal static class SteamStore
 #endif
 #if DEBUG
                     else
-                        DebugForm.Current.Log("Steam store query failed on attempt #" + attempts + " for " + appId +
-                                              (isDlc ? " (DLC)" : "")
-                                              + ": Response deserialization null");
+                    {
+                        DebugForm.Current.Log(
+                            FormatErrorLog(attempts, appId, gameName, isDlc, "Response deserialization null", parentGameName, parentGameAppId));
+                    }
 #endif
                 }
 #if DEBUG
                 else
+                {
                     DebugForm.Current.Log(
-                        "Steam store query failed on attempt #" + attempts + " for " + appId + (isDlc ? " (DLC)" : "") +
-                        ": Response null",
+                        FormatErrorLog(attempts, appId, gameName, isDlc, "Null or empty response", parentGameName, parentGameAppId),
                         LogTextBox.Warning);
+                }
 #endif
             }
 
@@ -148,7 +167,8 @@ internal static class SteamStore
             if (attempts > 10)
             {
 #if DEBUG
-                DebugForm.Current.Log("Failed to query Steam store after 10 tries: " + appId);
+                DebugForm.Current.Log(
+                    FormatErrorLog(attempts, appId, gameName, isDlc, "Maximum retry attempts exceeded (10)", parentGameName, parentGameAppId));
 #endif
                 break;
             }

CreamInstaller/Program.cs

@@ -2,6 +2,7 @@ using System;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading;
+using System.Threading.Tasks;
 using System.Windows.Forms;
 using CreamInstaller.Forms;
 using CreamInstaller.Platforms.Steam;
@@ -65,24 +66,30 @@ internal static class Program
             Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
             AppDomain.CurrentDomain.UnhandledException +=
                 (_, e) => (e.ExceptionObject as Exception)?.HandleFatalException();
-            retry:
-            try
+            bool retry = true;
+            while (retry)
             {
-                HttpClientManager.Setup();
-                using UpdateForm form = new();
+                try
+                {
+                    HttpClientManager.Setup();
+                    using UpdateForm form = new();
 #if DEBUG
-                DebugForm.Current.Attach(form);
+                    DebugForm.Current.Attach(form);
 #endif
-                // Apply initial theme (dark by default)
-                Utility.ThemeManager.Apply(form);
-                Application.Run(form);
-            }
-            catch (Exception e)
-            {
-                if (e.HandleException())
-                    goto retry;
-                Application.Exit();
-                return;
+                    // Apply initial theme (dark by default)
+                    Utility.ThemeManager.Apply(form);
+                    Application.Run(form);
+                    retry = false;
+                }
+                catch (Exception e)
+                {
+                    retry = e.HandleException();
+                    if (!retry)
+                    {
+                        Application.Exit();
+                        return;
+                    }
+                }
             }
         }
 
@@ -91,15 +98,72 @@ internal static class Program
 
     internal static bool Canceled;
 
-    internal static async void Cleanup(bool cancel = true)
+    /// <summary>
+    /// Initiates application cleanup asynchronously. Use this when you can await the result.
+    /// </summary>
+    /// <param name="cancel">Whether to set the Canceled flag</param>
+    /// <returns>Task that completes when cleanup is finished</returns>
+    internal static async Task CleanupAsync(bool cancel = true)
     {
-        Canceled = cancel;
+        if (cancel)
+            Canceled = true;
         await SteamCMD.Cleanup();
     }
 
+    /// <summary>
+    /// Synchronous cleanup wrapper for event handlers and other synchronous contexts.
+    /// Initiates cleanup without blocking but does not wait for completion.
+    /// </summary>
+    /// <param name="cancel">Whether to set the Canceled flag</param>
+    internal static void Cleanup(bool cancel = true)
+    {
+        if (cancel)
+            Canceled = true;
+
+        // Fire and forget - don't block synchronous callers
+        // Any exceptions will be logged but won't crash the app
+        _ = Task.Run(async () =>
+        {
+            try
+            {
+                await SteamCMD.Cleanup();
+            }
+            catch (Exception ex)
+            {
+#if DEBUG
+                System.Diagnostics.Debug.WriteLine($"Cleanup failed: {ex.Message}");
+#endif
+                // Swallow exceptions during fire-and-forget cleanup
+            }
+        });
+    }
+
     private static void OnApplicationExit(object s, EventArgs e)
     {
-        Cleanup();
-        HttpClientManager.Dispose();
+        Canceled = true;
+
+        // For application exit, we should try to wait briefly for cleanup
+        try
+        {
+            Task cleanupTask = SteamCMD.Cleanup();
+            // Wait up to 5 seconds for graceful cleanup
+            if (!cleanupTask.Wait(TimeSpan.FromSeconds(5)))
+            {
+#if DEBUG
+                System.Diagnostics.Debug.WriteLine("Cleanup timed out during application exit");
+#endif
+            }
+        }
+        catch (Exception ex)
+        {
+#if DEBUG
+            System.Diagnostics.Debug.WriteLine($"Cleanup exception during exit: {ex.Message}");
+#endif
+            // Ignore exceptions during shutdown
+        }
+        finally
+        {
+            HttpClientManager.Dispose();
+        }
     }
 }

CreamInstaller/Resources/CreamAPI.cs

@@ -41,14 +41,15 @@ internal static class CreamAPI
         config.CreateFile(true, installForm)?.Close();
         StreamWriter writer = new(config, true, Encoding.Default);
         WriteConfig(writer, selection.Name, !int.TryParse(selection.Id, out _) ? "0" : selection.Id,
-            new(dlc.ToDictionary(_dlc => _dlc.Id, _dlc => _dlc.Name), PlatformIdComparer.String), installForm);
+            new(dlc.ToDictionary(_dlc => _dlc.Id, _dlc => _dlc.Name), PlatformIdComparer.String),
+            selection.UseExtraProtection, installForm);
         writer.Flush();
         writer.Close();
         return;
     }
 
     private static void WriteConfig(StreamWriter writer, string name, string appId,
-        SortedList<string, string> dlc, InstallForm installForm = null)
+        SortedList<string, string> dlc, bool extraProtection = false, InstallForm installForm = null)
     {
         writer.WriteLine($"; {name}");
         writer.WriteLine("[steam]");
@@ -58,7 +59,7 @@ internal static class CreamAPI
         writer.WriteLine("unlockall = false");
         writer.WriteLine("orgapi = steam_api_o.dll");
         writer.WriteLine("orgapi64 = steam_api64_o.dll");
-        writer.WriteLine("extraprotection = false"); // we may want to set this on by default?
+        writer.WriteLine($"extraprotection = {(extraProtection ? "true" : "false")}");
         writer.WriteLine("forceoffline = false");
         writer.WriteLine();
         writer.WriteLine("[steam_misc]"); // this line seems to be required in v5.3.0.0, or the config won't be read

CreamInstaller/Resources/UplayR1.cs

@@ -68,10 +68,10 @@ internal static class UplayR1
                     false);
             }
 
-            writer.WriteLine("  ],");
+            writer.WriteLine("  ]");
         }
         else
-            writer.WriteLine("  \"blacklist\": [],");
+            writer.WriteLine("  \"blacklist\": []");
 
         writer.WriteLine("}");
     }

CreamInstaller/Resources/UplayR2.cs

@@ -72,10 +72,10 @@ internal static class UplayR2
                     false);
             }
 
-            writer.WriteLine("  ],");
+            writer.WriteLine("  ]");
         }
         else
-            writer.WriteLine("  \"blacklist\": [],");
+            writer.WriteLine("  \"blacklist\": []");
 
         writer.WriteLine("}");
     }

CreamInstaller/Selection.cs

@@ -1,13 +1,16 @@
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 using CreamInstaller.Forms;
+using CreamInstaller.Platforms.Epic;
+using CreamInstaller.Platforms.Steam;
+using CreamInstaller.Platforms.Ubisoft;
 using CreamInstaller.Resources;
 using CreamInstaller.Utility;
 using static CreamInstaller.Resources.Resources;
-
 namespace CreamInstaller;
 
 public enum Platform
@@ -34,12 +37,14 @@ internal sealed class Selection : IEquatable<Selection>
     internal readonly string RootDirectory;
     internal readonly TreeNode TreeNode;
     internal string Icon;
+    internal bool UseExtraProtection;
     internal bool UseProxy;
     internal string Proxy;
     internal string Product;
     internal string Publisher;
     internal string SubIcon;
     internal string Website;
+    internal InstalledUnlocker InstalledUnlocker;
 
     internal IEnumerable<string> GetAvailableProxies()
     {
@@ -134,6 +139,100 @@ internal sealed class Selection : IEquatable<Selection>
     internal static Selection FromId(Platform platform, string gameId) =>
         All.Keys.FirstOrDefault(s => s.Platform == platform && s.Id == gameId);
 
+    internal InstalledUnlocker DetectInstalledUnlocker()
+    {
+        foreach (string directory in DllDirectories)
+        {
+            if (Platform is Platform.Steam or Platform.Paradox)
+            {
+                // Use uniquely-named config files to distinguish CreamAPI from SmokeAPI.
+                // Both share steam_api_o.dll so the _o files alone are ambiguous.
+                directory.GetSmokeApiComponents(out _, out _, out _, out _, out string smokeOldConfig,
+                    out string smokeConfig, out _, out _, out _);
+                if (smokeConfig.FileExists() || smokeOldConfig.FileExists())
+                    return InstalledUnlocker.SmokeAPI;
+
+                directory.GetCreamApiComponents(out _, out _, out _, out _, out string creamConfig);
+                if (creamConfig.FileExists())
+                {
+                    ReadCreamApiConfig(creamConfig);
+                    return InstalledUnlocker.CreamAPI;
+                }
+
+                // Fallback: config was deleted but _o files remain — identify by replacement DLL content
+                directory.GetSmokeApiComponents(out string smokeApi32, out string api32_o,
+                    out string smokeApi64, out string api64_o, out _, out _, out _, out _, out _);
+                if (api32_o.FileExists() || api64_o.FileExists())
+                {
+                    if ((smokeApi32.FileExists() && smokeApi32.IsResourceFile(ResourceIdentifier.Steamworks32))
+                        || (smokeApi64.FileExists() && smokeApi64.IsResourceFile(ResourceIdentifier.Steamworks64)))
+                        return InstalledUnlocker.SmokeAPI;
+                    return InstalledUnlocker.CreamAPI;
+                }
+            }
+
+            if (Platform is Platform.Epic or Platform.Paradox)
+            {
+                directory.GetScreamApiComponents(out _, out string api32_o, out _, out string api64_o,
+                    out _, out string config, out _, out _);
+                if (config.FileExists() || api32_o.FileExists() || api64_o.FileExists())
+                    return InstalledUnlocker.ScreamAPI;
+            }
+
+            if (Platform is Platform.Ubisoft)
+            {
+                directory.GetUplayR1Components(out _, out string api32_o, out _, out string api64_o,
+                    out string config, out _);
+                if (config.FileExists() || api32_o.FileExists() || api64_o.FileExists())
+                    return InstalledUnlocker.UplayR1;
+                directory.GetUplayR2Components(out _, out _, out _, out api32_o, out _, out api64_o,
+                    out config, out _);
+                if (config.FileExists() || api32_o.FileExists() || api64_o.FileExists())
+                    return InstalledUnlocker.UplayR2;
+            }
+        }
+
+        foreach ((string directory, _) in ExecutableDirectories)
+        {
+            directory.GetKoaloaderComponents(out _, out string config, out _);
+            if (directory.GetKoaloaderProxies().Any(proxy =>
+                    proxy.FileExists() && proxy.IsResourceFile(ResourceIdentifier.Koaloader))
+                || config.FileExists())
+                return InstalledUnlocker.Koaloader;
+        }
+
+        return InstalledUnlocker.None;
+    }
+
+    private void ReadCreamApiConfig(string configPath)
+    {
+        try
+        {
+            if (!configPath.FileExists())
+                return;
+
+            string[] lines = File.ReadAllLines(configPath);
+            foreach (string line in lines)
+            {
+                string trimmed = line.Trim();
+                if (trimmed.StartsWith("extraprotection", StringComparison.OrdinalIgnoreCase))
+                {
+                    string[] parts = trimmed.Split('=');
+                    if (parts.Length == 2)
+                    {
+                        string value = parts[1].Trim();
+                        UseExtraProtection = value.Equals("true", StringComparison.OrdinalIgnoreCase);
+                    }
+                    break;
+                }
+            }
+        }
+        catch
+        {
+            // If we can't read the config, leave UseExtraProtection at its default value
+        }
+    }
+
     public override bool Equals(object obj) => ReferenceEquals(this, obj) || obj is Selection other && Equals(other);
 
     public override int GetHashCode() => HashCode.Combine(Id, (int)Platform);

CreamInstaller/SelectionDLC.cs

@@ -22,17 +22,20 @@ internal sealed class SelectionDLC : IEquatable<SelectionDLC>
     internal readonly string Name;
     internal readonly TreeNode TreeNode;
     internal readonly DLCType Type;
+    internal readonly string GameId;
     internal string Icon;
     internal string Product;
     internal string Publisher;
     private Selection selection;
 
-    private SelectionDLC(DLCType type, string id, string name)
+    private SelectionDLC(DLCType type, string gameId, string id, string name)
     {
         Type = type;
+        GameId = gameId;
         Id = id;
         Name = name;
         TreeNode = new() { Tag = Type, Name = Id, Text = Name };
+        _ = All.TryAdd(this, 0);
     }
 
     internal bool Enabled
@@ -65,15 +68,15 @@ internal sealed class SelectionDLC : IEquatable<SelectionDLC>
 
     public bool Equals(SelectionDLC other)
         => other is not null && (ReferenceEquals(this, other) ||
-                                 Type == other.Type && Selection?.Id == other.Selection?.Id && Id == other.Id);
+                                 Type == other.Type && GameId == other.GameId && Id == other.Id);
 
     internal static SelectionDLC GetOrCreate(DLCType type, string gameId, string id, string name)
-        => FromId(type, gameId, id) ?? new SelectionDLC(type, id, name);
+        => FromId(type, gameId, id) ?? new SelectionDLC(type, gameId, id, name);
 
     internal static SelectionDLC FromId(DLCType type, string gameId, string dlcId)
-        => All.Keys.FirstOrDefault(dlc => dlc.Type == type && dlc.Selection?.Id == gameId && dlc.Id == dlcId);
+        => All.Keys.FirstOrDefault(dlc => dlc.Type == type && dlc.GameId == gameId && dlc.Id == dlcId);
 
     public override bool Equals(object obj) => ReferenceEquals(this, obj) || obj is SelectionDLC other && Equals(other);
 
-    public override int GetHashCode() => HashCode.Combine((int)Type, Selection?.Id, Id);
+    public override int GetHashCode() => HashCode.Combine((int)Type, GameId, Id);
 }

CreamInstaller/Utility/HttpClientManager.cs

@@ -13,23 +13,59 @@ namespace CreamInstaller.Utility;
 
 internal static class HttpClientManager
 {
-    internal static HttpClient HttpClient;
+    private static readonly object _lock = new();
+    private static HttpClient _httpClient;
+    private static SocketsHttpHandler _handler;
+
+    internal static HttpClient HttpClient
+    {
+        get
+        {
+            lock (_lock)
+            {
+                return _httpClient;
+            }
+        }
+    }
 
     private static readonly ConcurrentDictionary<string, string> HttpContentCache = new();
 
     internal static void Setup()
     {
-        HttpClient = new();
-        if (CreamInstaller.Platforms.Epic.EpicStore.EpicBool)
+        lock (_lock)
         {
-            HttpClient.DefaultRequestHeaders.UserAgent.Add(new("EpicGamesLauncher", "18.9.0-45233261+++Portal+Release-Live"));
-            CreamInstaller.Platforms.Epic.EpicStore.EpicBool = false;
+            // If already set up, don't recreate to avoid socket exhaustion
+            if (_httpClient != null)
+                return;
+
+            // Create a SocketsHttpHandler with proper pooling and lifecycle settings
+            _handler = new SocketsHttpHandler
+            {
+                PooledConnectionLifetime = TimeSpan.FromMinutes(10), // Rotate connections every 10 minutes to respect DNS changes
+                PooledConnectionIdleTimeout = TimeSpan.FromMinutes(2), // Close idle connections after 2 minutes
+                MaxConnectionsPerServer = 10, // Reasonable concurrent connection limit
+                EnableMultipleHttp2Connections = true
+            };
+
+            // Create HttpClient with the handler
+            _httpClient = new HttpClient(_handler, disposeHandler: false)
+            {
+                Timeout = TimeSpan.FromSeconds(30) // 30 second timeout for all requests
+            };
+
+            // Set user agent based on context
+            if (CreamInstaller.Platforms.Epic.EpicStore.EpicBool)
+            {
+                _httpClient.DefaultRequestHeaders.UserAgent.Add(new("EpicGamesLauncher", "18.9.0-45233261+++Portal+Release-Live"));
+                CreamInstaller.Platforms.Epic.EpicStore.EpicBool = false;
+            }
+            else
+            {
+                _httpClient.DefaultRequestHeaders.UserAgent.Add(new(Program.Name, Program.Version));
+            }
+
+            _httpClient.DefaultRequestHeaders.AcceptLanguage.Add(new(CultureInfo.CurrentCulture.ToString()));
         }
-        else
-        {
-            HttpClient.DefaultRequestHeaders.UserAgent.Add(new(Program.Name, Program.Version));
-        }
-        HttpClient.DefaultRequestHeaders.AcceptLanguage.Add(new(CultureInfo.CurrentCulture.ToString()));
     }
 
     internal static async Task<string> EnsureGet(string url)
@@ -52,16 +88,31 @@ internal static class HttpClientManager
             if (e.StatusCode != HttpStatusCode.TooManyRequests)
             {
 #if DEBUG
-                DebugForm.Current.Log("Get request failed to " + url + ": " + e, LogTextBox.Warning);
+                string statusInfo = e.StatusCode.HasValue ? $" (HTTP {(int)e.StatusCode.Value})" : "";
+                DebugForm.Current.Log($"Get request failed to {url}{statusInfo}: {e}", LogTextBox.Warning);
 #endif
                 return null;
             }
 #if DEBUG
-            DebugForm.Current.Log("Too many requests to " + url, LogTextBox.Error);
+            DebugForm.Current.Log($"Too many requests to {url} (HTTP 429 - Rate Limited)", LogTextBox.Error);
 #endif
             // do something special?
             return null;
         }
+        catch (TaskCanceledException)
+        {
+#if DEBUG
+            DebugForm.Current.Log("Get request timed out for " + url, LogTextBox.Warning);
+#endif
+            return null;
+        }
+        catch (OperationCanceledException)
+        {
+#if DEBUG
+            DebugForm.Current.Log("Get request was cancelled for " + url, LogTextBox.Warning);
+#endif
+            return null;
+        }
 #if DEBUG
         catch (Exception e)
         {
@@ -88,5 +139,37 @@ internal static class HttpClientManager
         }
     }
 
-    internal static void Dispose() => HttpClient?.Dispose();
+    /// <summary>
+    /// Creates a new HttpClient for isolated/one-off use cases.
+    /// The caller is responsible for disposing the returned client.
+    /// </summary>
+    internal static HttpClient CreateIsolatedClient(TimeSpan? timeout = null)
+    {
+        var handler = new SocketsHttpHandler
+        {
+            PooledConnectionLifetime = TimeSpan.FromMinutes(2),
+            PooledConnectionIdleTimeout = TimeSpan.FromMinutes(1),
+            MaxConnectionsPerServer = 5
+        };
+
+        var client = new HttpClient(handler, disposeHandler: true)
+        {
+            Timeout = timeout ?? TimeSpan.FromSeconds(30)
+        };
+
+        client.DefaultRequestHeaders.UserAgent.ParseAdd($"{Program.Name}/{Program.Version}");
+        return client;
+    }
+
+    internal static void Dispose()
+    {
+        lock (_lock)
+        {
+            _httpClient?.Dispose();
+            _httpClient = null;
+
+            _handler?.Dispose();
+            _handler = null;
+        }
+    }
 }

CreamInstaller/Utility/ProgramData.cs

@@ -6,10 +6,42 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
+using CreamInstaller;
 using Newtonsoft.Json;
 
 namespace CreamInstaller.Utility;
 
+internal enum InstalledUnlocker
+{
+    None = 0,
+    CreamAPI,
+    SmokeAPI,
+    ScreamAPI,
+    UplayR1,
+    UplayR2,
+    Koaloader
+}
+
+internal sealed class InstalledDlcRecord
+{
+    public string DlcType { get; set; }
+    public string Id { get; set; }
+    public string Name { get; set; }
+}
+
+internal sealed class InstalledGameRecord
+{
+    public Platform Platform { get; set; }
+    public string Id { get; set; }
+    public string Name { get; set; }
+    public string RootDirectory { get; set; }
+    public InstalledUnlocker Unlocker { get; set; }
+    public bool UseProxy { get; set; }
+    public string Proxy { get; set; }
+    public bool UseExtraProtection { get; set; }
+    public List<InstalledDlcRecord> Dlc { get; set; } = [];
+}
+
 internal static class ProgramData
 {
     private static readonly string DirectoryPathOld =
@@ -29,6 +61,8 @@ internal static class ProgramData
     private static readonly string ProgramChoicesPath = DirectoryPath + @"\choices.json";
     private static readonly string DlcChoicesPath = DirectoryPath + @"\dlc.json";
     private static readonly string KoaloaderProxyChoicesPath = DirectoryPath + @"\proxies.json";
+    private static readonly string ExtraProtectionChoicesPath = DirectoryPath + @"\extraprotection.json";
+    private static readonly string InstalledGamesPath = DirectoryPath + @"\installed.json";
 
     internal static readonly string LogPath = DirectoryPath + @"\scan.log";
 
@@ -229,4 +263,85 @@ internal static class ProgramData
             // ignored
         }
     }
+
+    internal static IEnumerable<(Platform platform, string id)> ReadExtraProtectionChoices()
+    {
+        if (ExtraProtectionChoicesPath.FileExists())
+            try
+            {
+                if (JsonConvert.DeserializeObject(ExtraProtectionChoicesPath.ReadFile(),
+                        typeof(IEnumerable<(Platform platform, string id)>)) is
+                    IEnumerable<(Platform platform, string id)> choices)
+                    return choices;
+            }
+            catch
+            {
+                // ignored
+            }
+
+        return [];
+    }
+
+    internal static void WriteExtraProtectionChoices(IEnumerable<(Platform platform, string id)> choices)
+    {
+        try
+        {
+            if (choices is null || !choices.Any())
+                ExtraProtectionChoicesPath.DeleteFile();
+            else
+                ExtraProtectionChoicesPath.WriteFile(JsonConvert.SerializeObject(choices));
+        }
+        catch
+        {
+            // ignored
+        }
+    }
+
+    internal static List<InstalledGameRecord> ReadInstalledGames()
+    {
+        if (InstalledGamesPath.FileExists())
+            try
+            {
+                if (JsonConvert.DeserializeObject<List<InstalledGameRecord>>(InstalledGamesPath.ReadFile()) is
+                    { } records)
+                    return records;
+            }
+            catch
+            {
+                // ignored
+            }
+
+        return [];
+    }
+
+    internal static void WriteInstalledGames(IEnumerable<InstalledGameRecord> records)
+    {
+        try
+        {
+            List<InstalledGameRecord> list = records?.ToList() ?? [];
+            if (list.Count == 0)
+                InstalledGamesPath.DeleteFile();
+            else
+                InstalledGamesPath.WriteFile(JsonConvert.SerializeObject(list, Formatting.Indented));
+        }
+        catch
+        {
+            // ignored
+        }
+    }
+
+    internal static void UpsertInstalledGame(InstalledGameRecord record)
+    {
+        List<InstalledGameRecord> records = ReadInstalledGames();
+        _ = records.RemoveAll(r => r.Platform == record.Platform && r.Id == record.Id);
+        records.Add(record);
+        WriteInstalledGames(records);
+    }
+
+    internal static void RemoveInstalledGame(Platform platform, string id)
+    {
+        List<InstalledGameRecord> records = ReadInstalledGames();
+        if (records.RemoveAll(r => r.Platform == platform && r.Id == id) > 0)
+            WriteInstalledGames(records);
+    }
 }

CreamInstaller/Utility/ThemeManager.cs

@@ -31,6 +31,17 @@ internal static class ThemeManager
     private static readonly Color DarkComboBorder = DarkBorder; // #3F3F46
     private static readonly Color DarkComboText = DarkFore; // #D4D4D4
 
+    // Badge colors for unlockers
+    private static readonly Color CreamAPIBadgeBack = ColorTranslator.FromHtml("#C8A078"); // Creamy latte
+    private static readonly Color CreamAPIBadgeBackHighlight = ColorTranslator.FromHtml("#B48C64");
+    private static readonly Color CreamAPIBadgeBorder = ColorTranslator.FromHtml("#DCB48C");
+    private static readonly Color SmokeAPIBadgeBack = ColorTranslator.FromHtml("#69696E"); // Smoky grey
+    private static readonly Color SmokeAPIBadgeBackHighlight = ColorTranslator.FromHtml("#5A5A5F");
+    private static readonly Color SmokeAPIBadgeBorder = ColorTranslator.FromHtml("#8C8C91");
+    private static readonly Color DefaultBadgeBack = ColorTranslator.FromHtml("#008C46"); // Default green
+    private static readonly Color DefaultBadgeBackHighlight = ColorTranslator.FromHtml("#00783C");
+    private static readonly Color DefaultBadgeBorder = ColorTranslator.FromHtml("#00B45A");
+
     // ----------------------------
     // Light mode colors (system defaults)
     // ----------------------------
@@ -76,6 +87,17 @@ internal static class ThemeManager
 
     internal static Color CustomTreeViewComboTextColor => IsDark ? DarkComboText : LightComboText;
 
+    // Badge colors for unlockers
+    internal static Color CreamAPIBadgeBackgroundColor => CreamAPIBadgeBack;
+    internal static Color CreamAPIBadgeBackgroundHighlightColor => CreamAPIBadgeBackHighlight;
+    internal static Color CreamAPIBadgeBorderColor => CreamAPIBadgeBorder;
+    internal static Color SmokeAPIBadgeBackgroundColor => SmokeAPIBadgeBack;
+    internal static Color SmokeAPIBadgeBackgroundHighlightColor => SmokeAPIBadgeBackHighlight;
+    internal static Color SmokeAPIBadgeBorderColor => SmokeAPIBadgeBorder;
+    internal static Color DefaultBadgeBackgroundColor => DefaultBadgeBack;
+    internal static Color DefaultBadgeBackgroundHighlightColor => DefaultBadgeBackHighlight;
+    internal static Color DefaultBadgeBorderColor => DefaultBadgeBorder;
+
     // -----------------------------------------------------------------
     // Public / Internal API
     // -----------------------------------------------------------------