feat: replace /archive with release-cardinal searchable browser (Phase 9 §8.H)

Retire the three-card overview for a search + medium + genre browser over all
releases. Adds q/genre filter params to the api/release paged read path,
mirroring the existing api/track/page TrackFilter pattern.

DeepDrftData/IReleaseService.cs

@@ -12,10 +12,10 @@ namespace DeepDrftData;
 /// </summary>
 public interface IReleaseService
 {
-    /// <summary>Paginated releases, optionally filtered to one medium. The matching medium's metadata satellite is included in the result. Omit medium for all releases.</summary>
+    /// <summary>Paginated releases, optionally narrowed by medium and a free-text/genre filter. The matching medium's metadata satellite is included in the result. Omit medium for all releases; omit filter for no search/genre narrowing.</summary>
     Task<ResultContainer<PagedResult<ReleaseDto>>> GetPagedAsync(
         int page, int pageSize, string? sortColumn, bool sortDescending,
-        ReleaseMedium? medium, CancellationToken cancellationToken = default);
+        ReleaseMedium? medium, ReleaseFilter? filter = null, CancellationToken cancellationToken = default);
 
     /// <summary>Single release with both metadata navs included (nulls for non-matching media).</summary>
     Task<ResultContainer<ReleaseDto?>> GetByIdAsync(long id, CancellationToken cancellationToken = default);