fix: remove bulk_auto_assignment_job cron schedule (#13877)

config/initializers/sidekiq.rb

@@ -34,7 +34,18 @@ end
 
 # https://github.com/ondrejbartas/sidekiq-cron
 Rails.application.reloader.to_prepare do
-  # TODO: Switch to `load_from_hash!(..., source: 'schedule')` once we have a
-  # safe cleanup path for YAML-backed cron jobs already persisted in Redis.
-  Sidekiq::Cron::Job.load_from_hash YAML.load_file(schedule_file) if File.exist?(schedule_file) && Sidekiq.server?
+  # load_from_hash! upserts jobs from the YAML and removes any Redis-persisted
+  # jobs that share the same source tag but are no longer in the file.
+  # This ensures deleted schedule entries are cleaned up on deploy.
+  if File.exist?(schedule_file) && Sidekiq.server?
+    schedule = YAML.load_file(schedule_file)
+
+    # Cron entries removed from schedule.yml but possibly still in Redis
+    # with source:'dynamic' (predating the source tag). load_from_hash!
+    # only cleans up source:'schedule' entries, so these need explicit removal.
+    # Remove names from this list once they've been through a deploy cycle.
+    %w[bulk_auto_assignment_job].each { |name| Sidekiq::Cron::Job.destroy(name) }
+
+    Sidekiq::Cron::Job.load_from_hash!(schedule, source: 'schedule')
+  end
 end

config/schedule.yml

@@ -4,7 +4,6 @@
 
 # executed daily at 0000 UTC
 # schedules daily deferred jobs at stable times for each installation
-# keep the existing schedule key while the cron loader still uses load_from_hash
 internal_check_new_versions_job:
   cron: '0 0 * * *'
   class: 'Internal::TriggerDailyScheduledItemsJob'
@@ -50,13 +49,6 @@ delete_accounts_job:
   class: 'Internal::DeleteAccountsJob'
   queue: scheduled_jobs
 
-# executed every 15 minutes
-# to assign unassigned conversations for all inboxes
-bulk_auto_assignment_job:
-  cron: '*/15 * * * *'
-  class: 'Inboxes::BulkAutoAssignmentJob'
-  queue: scheduled_jobs
-
 # executed every 30 minutes for assignment_v2
 periodic_assignment_job:
   cron: '*/30 * * * *'