1. ✅ Fixed Misleading Property Names

- File: WebApp/ChapterSettings.cs
  - Change: Renamed StateContainer.UserId to ScheduledTeams
  - Impact: Property name now accurately reflects what it stores

  2. ✅ Added Structured Logging with Serilog

  - Packages Added:
    - Serilog.AspNetCore
    - Serilog.Sinks.Console
    - Serilog.Sinks.File
  - Files Modified:
    - Program.cs - Added Serilog configuration with console and file logging
    - appsettings.json - Added Serilog minimum log levels
    - appsettings.Development.json - Added Debug level logging for development
  - Benefits:
    - Structured log output for better parsing/analysis
    - Automatic file rotation (daily, 30 days retention)
    - Logs stored in logs/webapp-.txt
    - Better formatted console output

  3. ✅ Added Global Error Handling

  - File Created: WebApp/Components/Shared/AppErrorBoundary.razor
  - File Modified: WebApp/Components/App.razor
  - Features:
    - Catches unhandled exceptions throughout the app
    - Shows detailed error info in Development environment
    - Shows user-friendly message in Production
    - Logs errors automatically
    - Provides "Return to Home" button

  4. ✅ Enhanced Input Validation

  - File Modified: WebApp/Components/Login.razor
  - Validations Added:
    - Email: Required, valid email format, max 100 chars, regex validation
    - Password: Required, min 8 chars, max 100 chars
  - Benefits:
    - Client-side validation before submission
    - Clear error messages for users
    - Prevents invalid data submission

WebApp/Program.cs

@@ -1,12 +1,26 @@
 using Data;
 using Microsoft.EntityFrameworkCore;
 using MudBlazor.Services;
+using Serilog;
 using WebApp;
 using WebApp.Authentication;
 using WebApp.Components;
 
 var builder = WebApplication.CreateBuilder(args);
 
+// Configure Serilog
+builder.Host.UseSerilog((context, configuration) =>
+    configuration
+        .ReadFrom.Configuration(context.Configuration)
+        .Enrich.FromLogContext()
+        .WriteTo.Console(
+            outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj} {Properties:j}{NewLine}{Exception}")
+        .WriteTo.File(
+            path: "logs/webapp-.txt",
+            rollingInterval: RollingInterval.Day,
+            retainedFileCountLimit: 30,
+            outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj} {Properties:j}{NewLine}{Exception}"));
+
 // Configure authentication secrets for production (Docker, etc.)
 if (builder.Environment.IsProduction())
 {