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

DeepDrftPublic.Client/Pages/ArchiveView.razor.cs

@@ -115,16 +115,6 @@ public partial class ArchiveView : ComponentBase, IDisposable
         await LoadReleases();
     }
 
-    // Per-medium detail target. Session/Mix open their own detail page; a Cut has no single-release
-    // detail page, so it opens the track gallery filtered to its release title — the same destination
-    // AlbumsView's Cut cards use, preserving the established navigation.
-    private static string DetailHref(ReleaseDto release) => release.Medium switch
-    {
-        ReleaseMedium.Session => $"/sessions/{release.Id}",
-        ReleaseMedium.Mix => $"/mixes/{release.Id}",
-        _ => $"/tracks?album={Uri.EscapeDataString(release.Title)}",
-    };
-
     // Display label for a medium filter chip. Centralised so a new medium's label is one entry, not a
     // markup change. "DJ Mix" matches the CMS Type-chip wording (§8.D).
     private static string MediumLabel(ReleaseMedium medium) => medium switch