Consume PocketBase for posts and events, with English routes

Elternbeirat.Web.Tests/PocketBaseTestGroup.cs

@@ -0,0 +1,14 @@
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Groups every test that needs the seeded PocketBase container into one xUnit
+/// collection, so the single <see cref="PocketBaseFixture"/> (one container, one
+/// seed) is shared across those classes instead of started once per class. The
+/// test project runs one PocketBase for the whole run under the fixed project
+/// name <c>eb-test-stack</c>; sharing avoids two classes fighting over it.
+/// </summary>
+[CollectionDefinition(Name)]
+public sealed class PocketBaseTestGroup : ICollectionFixture<PocketBaseFixture>
+{
+    public const string Name = "PocketBase";
+}