Refactor layout and remove unused components

Updated `MainLayout.razor` to include a GitHub link and modified sidebar navigation. Removed `Counter.razor` and integrated its functionality into `Ask.razor`. Enhanced error handling in `Error.razor` and removed request ID display. Deleted `Weather.razor` and its associated content.

SqlDatabaseVectorSearch/Components/Layout/MainLayout.razor

@@ -2,7 +2,9 @@
 
 <BlazorBootstrapLayout StickyHeader="true">
     <HeaderSection>
-        <ThemeSwitcher Class="ps-3 ps-lg-2" Position="DropdownMenuPosition.End" />
+        <a href="https://github.com/marcominerva/SqlDatabaseVectorSearch" target="_blank" class="text-decoration-none" title="View on GitHub">
+            <Icon Name="IconName.Github" Class="ps-3 ps-lg-2" Size="IconSize.x2" Color="IconColor.Muted"></Icon>
+        </a>
     </HeaderSection>
 
     <SidebarSection>
@@ -40,9 +42,8 @@
     {
         navItems = [
             new() { Id = "1", Href = "/", IconName = IconName.HouseDoorFill, Text = "Home", Match = NavLinkMatch.All},
-            new() { Id = "2", Href = "/counter", IconName = IconName.PlusSquareFill, Text = "Counter"},
-            new() { Id = "3", Href = "/weather", IconName = IconName.Table, Text = "Weather"},
-            new() { Id = "4", Href= "/documents", IconName = IconName.FileText, Text = "Documents" }
+            new() { Id = "2", Href = "/ask", IconName = IconName.ChatDots, Text = "Ask"},
+            new() { Id = "3", Href= "/documents", IconName = IconName.FileText, Text = "Documents" }
         ];
 
         return navItems;

SqlDatabaseVectorSearch/Components/Pages/Error.razor

@@ -14,7 +14,7 @@
                 The page you're looking for does not exists.
             </p>
         }
-        else
+        else if (Code > 0)
         {
             <PageTitle>Unexpected Error</PageTitle>
 
@@ -26,13 +26,6 @@
         }
 
         <a title="Back to Home" href="/" class="btn btn-primary"><i class="bi bi-house-door-fill"></i> Back to Home</a>
-
-        @if (ShowRequestId)
-        {
-            <p>
-                <strong>Request ID:</strong> <code>@RequestId</code>
-            </p>
-        }
     </div>
 </div>
 
@@ -43,10 +36,4 @@
     [Parameter]
     [SupplyParameterFromQuery(Name = "code")]
     public int Code { get; set; }
-
-    private string? RequestId { get; set; }
-    private bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
-
-    protected override void OnInitialized() =>
-        RequestId = Activity.Current?.Id ?? HttpContext?.TraceIdentifier;
 }

SqlDatabaseVectorSearch/Components/Pages/Weather.razor

@@ -1,63 +0,0 @@
-@page "/weather"
-
-<PageTitle>Weather</PageTitle>
-
-<h1>Weather</h1>
-
-<p>This component demonstrates showing data.</p>
-
-@if (forecasts == null)
-{
-    <p><em>Loading...</em></p>
-}
-else
-{
-    <table class="table">
-        <thead>
-            <tr>
-                <th>Date</th>
-                <th aria-label="Temperature in Celsius">Temp. (C)</th>
-                <th aria-label="Temperature in Farenheit">Temp. (F)</th>
-                <th>Summary</th>
-            </tr>
-        </thead>
-        <tbody>
-            @foreach (var forecast in forecasts)
-            {
-                <tr>
-                    <td>@forecast.Date.ToShortDateString()</td>
-                    <td>@forecast.TemperatureC</td>
-                    <td>@forecast.TemperatureF</td>
-                    <td>@forecast.Summary</td>
-                </tr>
-            }
-        </tbody>
-    </table>
-}
-
-@code {
-    private WeatherForecast[]? forecasts;
-
-    protected override async Task OnInitializedAsync()
-    {
-        // Simulate asynchronous loading to demonstrate a loading indicator
-        await Task.Delay(500);
-
-        var startDate = DateOnly.FromDateTime(DateTime.Now);
-        var summaries = new[] { "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching" };
-        forecasts = Enumerable.Range(1, 5).Select(index => new WeatherForecast
-        {
-            Date = startDate.AddDays(index),
-            TemperatureC = Random.Shared.Next(-20, 55),
-            Summary = summaries[Random.Shared.Next(summaries.Length)]
-        }).ToArray();
-    }
-
-    private class WeatherForecast
-    {
-        public DateOnly Date { get; set; }
-        public int TemperatureC { get; set; }
-        public string? Summary { get; set; }
-        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
-    }
-}