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

Conflicts:
- `README.md`:
  Discarded upstream changes: we have our own README
- `app/controllers/follower_accounts_controller.rb`:
  Port upstream's minor refactoring

app/controllers/api/base_controller.rb

@@ -16,6 +16,26 @@ class Api::BaseController < ApplicationController
 
   protect_from_forgery with: :null_session
 
+  content_security_policy do |p|
+    # Set every directive that does not have a fallback
+    p.default_src :none
+    p.frame_ancestors :none
+    p.form_action :none
+
+    # Disable every directive with a fallback to cut on response size
+    p.base_uri false
+    p.font_src false
+    p.img_src false
+    p.style_src false
+    p.media_src false
+    p.frame_src false
+    p.manifest_src false
+    p.connect_src false
+    p.script_src false
+    p.child_src false
+    p.worker_src false
+  end
+
   rescue_from ActiveRecord::RecordInvalid, Mastodon::ValidationError do |e|
     render json: { error: e.to_s }, status: 422
   end

app/controllers/api/v1/admin/domain_blocks_controller.rb

@@ -40,10 +40,8 @@ class Api::V1::Admin::DomainBlocksController < Api::BaseController
 
   def update
     authorize @domain_block, :update?
-    @domain_block.update(domain_block_params)
-    severity_changed = @domain_block.severity_changed?
-    @domain_block.save!
-    DomainBlockWorker.perform_async(@domain_block.id, severity_changed)
+    @domain_block.update!(domain_block_params)
+    DomainBlockWorker.perform_async(@domain_block.id, @domain_block.severity_previously_changed?)
     log_action :update, @domain_block
     render json: @domain_block, serializer: REST::Admin::DomainBlockSerializer
   end

app/controllers/api/v1/notifications_controller.rb

@@ -40,7 +40,7 @@ class Api::V1::NotificationsController < Api::BaseController
   private
 
   def load_notifications
-    notifications = browserable_account_notifications.includes(from_account: :account_stat).to_a_paginated_by_id(
+    notifications = browserable_account_notifications.includes(from_account: [:account_stat, :user]).to_a_paginated_by_id(
       limit_param(DEFAULT_NOTIFICATIONS_LIMIT),
       params_slice(:max_id, :since_id, :min_id)
     )