Persist follow recommendations from FASP (#35218)

app/models/account_suggestions/fasp_source.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AccountSuggestions::FaspSource < AccountSuggestions::Source
+  def get(account, limit: DEFAULT_LIMIT)
+    return [] unless Mastodon::Feature.fasp_enabled?
+
+    base_account_scope(account).where(id: fasp_follow_recommendations_for(account)).limit(limit).pluck(:id).map do |account_id|
+      [account_id, :fasp]
+    end
+  end
+
+  private
+
+  def fasp_follow_recommendations_for(account)
+    Fasp::FollowRecommendation.for_account(account).newest_first.select(:recommended_account_id)
+  end
+end