Show recently released albums on homepage

Instead of recently_published. Lots of albums added are from an
Artists back catalogue, but I think here we want to show *new* music
so relying on released on is best. Not all artists set the release
date, but I think that's OK as there's enough that do for this list to
feel fresh.

app/models/album.rb

@@ -32,7 +32,7 @@ class Album < ApplicationRecord
   scope :pending, -> { where(publication_status: :pending) }
   scope :in_release_order, -> { order(Arel.sql('COALESCE(released_on, first_published_on) DESC NULLS LAST')) }
   scope :best_selling, -> { left_joins(:purchases).group(:id).order('COUNT(purchases.id) DESC') }
-  scope :recently_published, -> { order(first_published_on: :desc) }
+  scope :recently_released, -> { where.not(released_on: nil).order(released_on: :desc) }
 
   after_commit :transcode_tracks, on: :update, if: :metadata_or_cover_changed?
 

app/views/interests/new.html.erb

@@ -12,10 +12,10 @@
 
 <div class="grid grid-col gap-6">
   <%= render(
-  SectionComponent.new(title: 'Recently added')
+  SectionComponent.new(title: 'Recently released')
 ) do %>
     <%= render(CardGridComponent.new) do %>
-      <% Album.recently_published.limit(4).each do |album| %>
+      <% Album.recently_released.limit(4).each do |album| %>
         <%= link_to(artist_album_path(album.artist, album)) do %>
           <%= render(CardComponent.new(
           title: album.title,

test/models/album_test.rb

@@ -211,12 +211,13 @@ class AlbumTest < ActiveSupport::TestCase
     artist1 = create(:artist)
     artist2 = create(:artist)
 
-    older_album_artist1 = create(:album, artist: artist1, first_published_on: 4.months.ago)
-    newer_album_artist1 = create(:album, artist: artist1, first_published_on: 3.months.ago)
-    older_album_artist2 = create(:album, artist: artist2, first_published_on: 2.months.ago)
-    newer_album_artist2 = create(:album, artist: artist2, first_published_on: 1.month.ago)
+    older_album_artist1 = create(:album, artist: artist1, released_on: 4.months.ago)
+    newer_album_artist1 = create(:album, artist: artist1, released_on: 3.months.ago)
+    older_album_artist2 = create(:album, artist: artist2, released_on: 2.months.ago)
+    newer_album_artist2 = create(:album, artist: artist2, released_on: 1.month.ago)
+    create(:album, artist: artist1, released_on: nil)
 
-    recently_released = Album.recently_published.map(&:id)
+    recently_released = Album.recently_released.map(&:id)
 
     assert_equal [newer_album_artist2.id,
                   older_album_artist2.id,