feat(configmanager): add Serilog file logging to UI and create README

Configure Serilog for the ConfigManager UI application, replacing console
logging with daily rolling file logs in logs/ directory with 30-day
retention. Add shutdown handler to flush logs on exit.

NEW/src/Utils/JdeScoping.ConfigManager.Ui/App.axaml.cs

@@ -7,7 +7,8 @@ using JdeScoping.ConfigManager.Core.DependencyInjection;
 using JdeScoping.ConfigManager.Ui.Services;
 using JdeScoping.ConfigManager.Ui.ViewModels;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
+using Serilog;
+using Serilog.Events;
 
 namespace JdeScoping.ConfigManager.Ui;
 
@@ -37,6 +38,9 @@ public partial class App : Avalonia.Application
             {
                 DataContext = Services.GetRequiredService<MainWindowViewModel>()
             };
+
+            // Ensure logs are flushed on exit
+            desktop.ShutdownRequested += (_, _) => Log.CloseAndFlush();
         }
 
         base.OnFrameworkInitializationCompleted();
@@ -44,10 +48,24 @@ public partial class App : Avalonia.Application
 
     private void ConfigureServices(IServiceCollection services)
     {
+        // Configure Serilog with daily rolling file
+        var logsPath = Path.Combine(AppContext.BaseDirectory, "logs");
+        Directory.CreateDirectory(logsPath);
+
+        Log.Logger = new LoggerConfiguration()
+            .MinimumLevel.Information()
+            .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
+            .MinimumLevel.Override("Avalonia", LogEventLevel.Warning)
+            .Enrich.FromLogContext()
+            .WriteTo.File(
+                path: Path.Combine(logsPath, "configmanager-.log"),
+                rollingInterval: RollingInterval.Day,
+                retainedFileCountLimit: 30,
+                outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}")
+            .CreateLogger();
+
         // Logging
-        services.AddLogging(builder => builder
-            .AddConsole()
-            .SetMinimumLevel(LogLevel.Debug));
+        services.AddLogging(builder => builder.AddSerilog(dispose: true));
 
         // Add all ConfigManager.Core services
         services.AddConfigManagerCore();

NEW/src/Utils/JdeScoping.ConfigManager.Ui/README.md

@@ -0,0 +1,64 @@
+# JdeScoping ConfigManager UI
+
+Graphical configuration management tool for JDE Scoping Tool settings.
+
+## Building
+
+```bash
+dotnet build NEW/src/Utils/JdeScoping.ConfigManager.Ui/JdeScoping.ConfigManager.Ui.csproj
+```
+
+## Running
+
+```bash
+dotnet run --project NEW/src/Utils/JdeScoping.ConfigManager.Ui/JdeScoping.ConfigManager.Ui.csproj
+```
+
+Or run the built executable directly.
+
+## Configuration Discovery
+
+The UI searches for configuration in this order:
+1. `JDESCOPING_CONFIG_PATH` environment variable
+2. Same directory as executable
+3. `../JdeScoping.Host/` relative to executable
+4. User config directory
+
+## Features
+
+### Configuration Sections
+- **Data Sync** - Sync intervals and behavior
+- **Data Access** - Batch sizes and timeouts
+- **Authentication** - Session settings
+- **LDAP** - Directory server configuration
+- **Search** - Search behavior settings
+- **Excel Export** - Export format options
+- **Connection Strings** - Database connections (with provider-specific forms)
+
+### Pipeline Editor
+- Visual pipeline flow editor
+- Pre-script / Post-script management
+- Transform configuration (ColumnDrop, ColumnRename, JdeDate, Regex)
+- Source and destination editing
+- Reorder steps via move up/down
+
+### Secret Management
+- SecureStore initialization
+- View, add, edit, remove secrets
+- Copy secret values to clipboard
+
+### Validation
+- appsettings.json validation
+- Pipeline configuration validation
+- Results displayed in dialog
+
+## Logging
+
+Logs are written to the `logs/` directory relative to the executable:
+- **Location:** `logs/configmanager-YYYYMMDD.log`
+- **Rotation:** Daily with 30-day retention
+- **Level:** Information (warnings and errors from framework components)
+
+## CLI Alternative
+
+For command-line usage, see the [ConfigManager CLI](../JdeScoping.ConfigManager.Cli/README.md).