Feature verification: All v2.0.0 changelog items implemented

[Copilot]

Verified all features listed in the v1.6.3 → v2.0.0 changelog are implemented in the codebase. No missing features found.

Verified Features

• Multiple mod configs: ModConfigurationViewModel manages multiple configurations per mod
• Database optimization: FirebaseModlistMigrationService and VotesCacheWatcher handle migration and caching
• Performance for 300+ mods: BatchedObservableCollection, adaptive search debouncing (100-300ms), database info batching (50ms/20 items)
• Refactored mod browser: Dedicated ModBrowserView.xaml + ModBrowserViewModel, MainWindow reduced 4120→2585 lines
• Custom config directory: CustomConfigFolderManager enables config folder relocation
• Three-tab navigation: MiddleTabControl with commands (ShowModlistTabCommand, ShowMainTabCommand, ShowDatabaseTabCommand)
• Activity logging: ModActivityLoggingService logs installs/updates/deletions/launches/errors to "Simple VS Manager logs.txt"
• Theme palette loading: ThemePaletteEditorDialog.PaletteComboBox_OnSelectionChanged loads any default theme into custom theme

Example: Theme Loading Implementation

// ThemePaletteEditorDialog.xaml.cs line 132-160
private void PaletteComboBox_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
    if (!Enum.TryParse<ColorTheme>(themeTag, true, out var theme)) return;
    
    var palette = UserConfigurationService.GetDefaultThemePalette(theme);
    foreach (var pair in palette)
    {
        if (_configuration.TrySetThemePaletteColor(pair.Key, pair.Value))
        {
            if (itemsLookup.TryGetValue(pair.Key, out var entry))
                entry.UpdateFromHex(pair.Value);
        }
    }
    ApplyTheme();
}

Repository is feature-complete for v2.0.0 release.

Original prompt

This is what I have so far on my changelog going from 1.6.3 (current released version) to 2.0.0 (this repos unreleased version):

✅ Multiple configs for each mod
✅ Optimized votes and modlist database traffic, automatic migration to new database for users
✅ Performance optimization for large (300+) mod folders
✅ Switched Mod Database browsing to a more traditional model, faster and not as complex
✅ Ability to change directory of the managers config folder
✅ Design changes
✅ Proper Tab switching between the three main views, faster and simpler
✅ Logging options, saved to a txt file: mod installed, mod updated, mod deleted, app launched/exited, errors and debug
✅ The three default theme's can now be loaded into the custom theme for a good starting point

Compare 1.6.3 (https://github.com/Interzoneism/Simple-Mod-Manager) to the current state of this repo and find any missing features.

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