feat(settings, database): redesign settings UI and add database operations with backup

- Redesigned settings UI for improved clarity and user experience
- Added main SQLite operations: integrity check, vacuum, reindex with badge status indicators
- Implemented database backup feature with automatic date-based naming
- Included error handling with user dialogs for feedback

Author: mx7b7

src/CodeSnip/Helpers/ResultToBrushConverter.cs

@@ -0,0 +1,29 @@
+using System.Globalization;
+using System.Windows.Data;
+using System.Windows.Media;
+
+namespace CodeSnip.Helpers
+{
+    public class ResultToBrushConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            string? result = value as string;
+            if (string.IsNullOrEmpty(result))
+                return Brushes.Gray;
+
+            if (result == "✓")
+                return Brushes.Green;
+            else if (result == "✗")
+                return Brushes.Red;
+
+            return Brushes.Gray;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+}

src/CodeSnip/MainViewModel.cs

@@ -327,7 +327,7 @@ private void OpenSettings()
             // Store current values before opening the flyout to check for changes later
             bool oldShowEmptyLanguages = ShowEmptyLanguages;
             bool oldShowEmptyCategories = ShowEmptyCategories;
-            var vm = new SettingsViewModel(settingsService);
+            var vm = new SettingsViewModel(settingsService, _databaseService);
             _flyoutService.ShowFlyout("flySettings", vm, "Settings", () =>
             {
                 settingsService.HighlightLine = vm.HighlightLine;

src/CodeSnip/MainWindow.xaml

@@ -31,7 +31,7 @@
         <helpers:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
 
         <DataTemplate DataType="{x:Type settingsView:SettingsViewModel}">
-            <settingsView:SetingsView />
+            <settingsView:SettingsView />
         </DataTemplate>
         <DataTemplate DataType="{x:Type codeRunnerView:CodeRunnerViewModel}">
             <codeRunnerView:CodeRunnerView />

src/CodeSnip/Services/DatabaseService.cs

@@ -341,7 +341,50 @@ public void DeleteCategory(int id)
             conn.Execute("DELETE FROM Categories WHERE ID = @Id", new { Id = id });
         }
 
+        public async Task<bool> RunIntegrityCheckAsync()
+        {
+            try
+            {
+                using var conn = CreateConnection();
+                var result = await conn.QueryAsync<string>("PRAGMA integrity_check;");
+                return result.Count() == 1 && result.First() == "ok";
+            }
+            catch (Exception ex)
+            {
+                await DialogService.Instance.ShowMessageAsync("Integrity Check Failed", ex.Message);
+                return false;
+            }
+        }
 
+        public async Task<bool> RunVacuumAsync()
+        {
+            try
+            {
+                using var conn = CreateConnection();
+                await conn.ExecuteAsync("VACUUM;");
+                return true;
+            }
+            catch (Exception ex)
+            {
+                await DialogService.Instance.ShowMessageAsync("Vacuum Failed", ex.Message);
+                return false;
+            }
+        }
+
+        public async Task<bool> RunReindexAsync()
+        {
+            try
+            {
+                using var conn = CreateConnection();
+                await conn.ExecuteAsync("REINDEX;");
+                return true;
+            }
+            catch (Exception ex)
+            {
+                await DialogService.Instance.ShowMessageAsync("Reindex Failed", ex.Message);
+                return false;
+            }
+        }
 
         private const string ddl = @"
             CREATE TABLE IF NOT EXISTS Languages (