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

Conflicts:
- `app/validators/status_length_validator.rb`:
  Upstream changes too close to glitch-soc MAX_CHARS changes, but not a real
  conflict.
  Applied upstream changes.
- `package.json`:
  glitch-soc-only dependency textually too close to a dependency updated
  upstream, not a real conflict.
  Applied upstream changes.

config/routes.rb

@@ -406,6 +406,10 @@ Rails.application.routes.draw do
 
       resources :apps, only: [:create]
 
+      namespace :emails do
+        resources :confirmations, only: [:create]
+      end
+
       resource :instance, only: [:show] do
         resources :peers, only: [:index], controller: 'instances/peers'
         resource :activity, only: [:show], controller: 'instances/activity'