Restructure into feature folders with code-behind and scoped CSS

Elternbeirat.Web/Features/Events/Event.cs

@@ -0,0 +1,33 @@
+namespace Elternbeirat.Web.Services;
+
+/// <summary>
+/// A single calendar entry (parents' evening, meeting, deadline). Read from
+/// <c>Content/events.yml</c> at startup. All display text is German because it
+/// is visitor-facing content.
+/// </summary>
+public sealed class Event
+{
+    /// <summary>Short title shown in the list and the calendar.</summary>
+    public required string Title { get; init; }
+
+    /// <summary>
+    /// When the entry starts. A date-only entry (no time) is treated as an
+    /// all-day event; see <see cref="HasTime"/>.
+    /// </summary>
+    public required DateTime Start { get; init; }
+
+    /// <summary>
+    /// True when <see cref="Start"/> carries a wall-clock time, false for an
+    /// all-day entry. Drives both the list formatting and the ICS export.
+    /// </summary>
+    public required bool HasTime { get; init; }
+
+    /// <summary>Optional end, for multi-hour or multi-day entries.</summary>
+    public DateTime? End { get; init; }
+
+    /// <summary>Optional location, e.g. "Aula" or "Mensa".</summary>
+    public string? Location { get; init; }
+
+    /// <summary>Optional free-text note shown below the entry.</summary>
+    public string? Note { get; init; }
+}