FIX: automatically unsilence users

app/jobs/scheduled/unsilence_users.rb

@@ -0,0 +1,11 @@
+module Jobs
+  class UnsilenceUsers < Jobs::Scheduled
+    every 15.minutes
+
+    def execute(args)
+      User.where("silenced_till IS NOT NULL AND silenced_till < now()").find_each do |user|
+        UserSilencer.unsilence(user, Discourse.system_user)
+      end
+    end
+  end
+end

spec/jobs/unsilence_users_spec.rb

@@ -0,0 +1,16 @@
+require "rails_helper"
+
+describe Jobs::UnsilenceUsers do
+  it "unsilence users" do
+    user = Fabricate(:user)
+    UserSilencer.silence(user, Discourse.system_user, silenced_till: 2.days.ago)
+
+    user.reload
+    expect(user.silenced_till).to be
+
+    Jobs::UnsilenceUsers.new.execute({})
+
+    user.reload
+    expect(user.silenced_till).to be(nil)
+  end
+end