feat(routing): add ReleaseRoutes.DetailHref resolver; repoint release click sites and add /tracks/{id} redirect (P11 W2 §2)

DeepDrftPublic.Client/Common/ReleaseRoutes.cs

@@ -0,0 +1,30 @@
+using DeepDrftModels.DTOs;
+using DeepDrftModels.Enums;
+
+namespace DeepDrftPublic.Client.Common;
+
+/// <summary>
+/// The single source of truth for a release's dedicated detail route (Phase 11 §2). A release
+/// resolves to its per-medium detail page purely from its id and <see cref="ReleaseMedium"/> — no
+/// round-trip needed at call sites that already hold the medium (Archive cards, AlbumsView cards,
+/// the player-bar title). The thin <c>/tracks/{id}</c> redirect page fetches by id to discover the
+/// medium, then resolves through this same helper, so the medium→route table lives in exactly one
+/// place.
+/// </summary>
+public static class ReleaseRoutes
+{
+    /// <summary>
+    /// The dedicated detail route for a release: <c>/cuts/{id}</c>, <c>/sessions/{id}</c>, or
+    /// <c>/mixes/{id}</c>. Cut is the default arm so a new medium without an entry here surfaces a
+    /// build-visible gap rather than a silent fallthrough — extend the switch when a fourth medium lands.
+    /// </summary>
+    public static string DetailHref(long id, ReleaseMedium medium) => medium switch
+    {
+        ReleaseMedium.Session => $"/sessions/{id}",
+        ReleaseMedium.Mix => $"/mixes/{id}",
+        _ => $"/cuts/{id}",
+    };
+
+    /// <summary>Convenience overload for call sites holding a <see cref="ReleaseDto"/>.</summary>
+    public static string DetailHref(ReleaseDto release) => DetailHref(release.Id, release.Medium);
+}