Initial Blazor Web App template

Rider-generated Blazor Web App (net10.0, interactive render mode None,
no auth scaffold, no sample pages). Includes Rider auto-formatting.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Elternbeirat.Web/Components/App.razor

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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+    <base href="/"/>
+    <ResourcePreloader/>
+    <link rel="stylesheet" href="@Assets["app.css"]"/>
+    <link rel="stylesheet" href="@Assets["Elternbeirat.Web.styles.css"]"/>
+    <ImportMap/>
+    <HeadOutlet/>
+</head>
+
+<body>
+<Routes/>
+<script src="@Assets["_framework/blazor.web.js"]"></script>
+</body>
+
+</html>

Elternbeirat.Web/Components/Layout/MainLayout.razor

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+@inherits LayoutComponentBase
+
+@Body

Elternbeirat.Web/Components/Layout/MainLayout.razor.css

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+#blazor-error-ui {
+    color-scheme: light only;
+    background: lightyellow;
+    bottom: 0;
+    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
+    box-sizing: border-box;
+    display: none;
+    left: 0;
+    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
+    position: fixed;
+    width: 100%;
+    z-index: 1000;
+}
+
+    #blazor-error-ui .dismiss {
+        cursor: pointer;
+        position: absolute;
+        right: 0.75rem;
+        top: 0.5rem;
+    }

Elternbeirat.Web/Components/Pages/Error.razor

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+@page "/Error"
+@using System.Diagnostics
+
+<PageTitle>Error</PageTitle>
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (ShowRequestId)
+{
+    <p>
+        <strong>Request ID:</strong> <code>@RequestId</code>
+    </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>
+
+@code{
+    [CascadingParameter] private HttpContext? HttpContext { get; set; }
+
+    private string? RequestId { get; set; }
+    private bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+
+    protected override void OnInitialized() =>
+        RequestId = Activity.Current?.Id ?? HttpContext?.TraceIdentifier;
+
+}

Elternbeirat.Web/Components/Pages/Home.razor

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+@page "/"
+
+<PageTitle>Home</PageTitle>
+
+<h1>Hello, world!</h1>
+
+Welcome to your new app.

Elternbeirat.Web/Components/Pages/NotFound.razor

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+@page "/not-found"
+@layout MainLayout
+
+<h3>Not Found</h3>
+<p>Sorry, the content you are looking for does not exist.</p>

Elternbeirat.Web/Components/Routes.razor

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+<Router AppAssembly="typeof(Program).Assembly" NotFoundPage="typeof(Pages.NotFound)">
+    <Found Context="routeData">
+        <RouteView RouteData="routeData" DefaultLayout="typeof(Layout.MainLayout)"/>
+        <FocusOnNavigate RouteData="routeData" Selector="h1"/>
+    </Found>
+</Router>

Elternbeirat.Web/Components/_Imports.razor

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+@using System.Net.Http
+@using System.Net.Http.Json
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using static Microsoft.AspNetCore.Components.Web.RenderMode
+@using Microsoft.AspNetCore.Components.Web.Virtualization
+@using Microsoft.JSInterop
+@using Elternbeirat.Web
+@using Elternbeirat.Web.Components
+@using Elternbeirat.Web.Components.Layout