feat(cms): extract all-releases grid as embeddable ALL-tab component (9.8.B)

CmsAllReleasesGrid self-loads the cross-medium release list so 8.A can host it as the ALL tab with no VM plumbing; TrackList's Albums mode renders it now. Preserves sort/delete/expand/edit and the 8.D Type chip.

DeepDrftManager/Components/Pages/Tracks/TrackList.razor

@@ -54,9 +54,11 @@
     }
     else if (VM.Mode == BrowseMode.Albums)
     {
-        <CmsAlbumBrowser Releases="VM.Albums"
-                         IsLoading="VM.AlbumsLoading"
-                         OnReleasesChanged="OnAlbumsChanged" />
+        @* The all-releases grid is now a self-contained component (Phase 9 §8.B): it owns its own load
+           and refresh, so the host renders it with no parameters. The 8.A tab strip hosts this same
+           component as its ALL tab. Genre mode still uses the VM cache below; only album loading moved
+           into the component, so VM.Albums / VM.AlbumsLoading are no longer read here. *@
+        <CmsAllReleasesGrid OnReleasesChanged="OnAlbumsChanged" />
     }
     else if (VM.Mode == BrowseMode.Archive)
     {
@@ -76,8 +78,8 @@
 @code {
     private CmsTrackGrid? _grid;
 
-    // The album browser owns its own row state and removes a deleted release locally. Invalidate the
-    // VM cache so genres and album counts reflect the deletion on next mode switch.
+    // The all-releases grid refreshes its own list after a delete; this notification lets us invalidate
+    // the VM's genre cache so genre counts reflect the deletion on the next switch into Genre mode.
     private void OnAlbumsChanged()
     {
         VM.Invalidate();