Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Minor upstream change, our README is completely different.
  Kept ours.
- `lib/tasks/assets.rake`:
  glitch-soc has extra code to deal with its theming system,
  upstream changed a line that exists in glitch-soc.
  Applied upstream changes.

spec/models/concerns/remotable_spec.rb

@@ -194,7 +194,9 @@ RSpec.describe Remotable do
           let(:error_class) { error_class }
 
           it 'calls Rails.logger.debug' do
-            expect(Rails.logger).to receive(:debug).with(/^Error fetching remote #{hoge}: /)
+            expect(Rails.logger).to receive(:debug) do |&block|
+              expect(block.call).to match(/^Error fetching remote #{hoge}: /)
+            end
             foo.hoge_remote_url = url
           end
         end

spec/models/session_activation_spec.rb

@@ -118,8 +118,8 @@ RSpec.describe SessionActivation, type: :model do
     let(:id) { '1' }
 
     it 'calls where.destroy_all' do
-      expect(described_class).to receive_message_chain(:where, :destroy_all)
-        .with('session_id != ?', id).with(no_args)
+      expect(described_class).to receive_message_chain(:where, :not, :destroy_all)
+        .with(session_id: id).with(no_args)
 
       described_class.exclusive(id)
     end