feat: add global method without account scope

app/models/contact.rb

@@ -137,7 +137,7 @@ class Contact < ApplicationRecord
       .where('contacts.phone_number IS NULL OR contacts.phone_number = ?', '')
       .where('contacts.identifier IS NULL OR contacts.identifier = ?', '')
       .where('contacts.created_at < ?', time_period)
-      .where('NOT EXISTS (SELECT 1 FROM conversations WHERE conversations.contact_id = contacts.id)')
+      .where.missing(:conversations)
   }
 
   def get_source_id(inbox_id)

app/services/internal/remove_stale_contacts_service.rb

@@ -4,21 +4,15 @@ class Internal::RemoveStaleContactsService
   def perform(batch_size = 1000)
     Rails.logger.info "[Internal::RemoveStaleContactsService] Starting removal of stale contacts for account #{@account.id}"
 
-    # Get the stale contacts query
     stale_contacts = @account.contacts.stale_without_conversations(30.days.ago)
-
     total_deleted = 0
 
     # Get only IDs in batches without loading full records
     stale_contacts.select(:id).in_batches(of: batch_size) do |relation|
-      # Use pluck to get only the IDs
       contact_ids = relation.pluck(:id)
       next if contact_ids.empty?
 
-      # Delete associated contact_inboxes first
       ContactInbox.where(contact_id: contact_ids).delete_all
-
-      # Then delete the contacts
       Contact.where(id: contact_ids).delete_all
 
       total_deleted += contact_ids.size
@@ -29,4 +23,26 @@ class Internal::RemoveStaleContactsService
     Rails.logger.info "[Internal::RemoveStaleContactsService] Completed removal of #{total_deleted} stale contacts " \
                       "for account #{@account.id}"
   end
+
+  # Process stale contacts across all accounts
+  def perform_global(batch_size = 1000)
+    Rails.logger.info '[Internal::RemoveStaleContactsService] Starting global removal of stale contacts'
+
+    stale_contacts = Contact.stale_without_conversations(30.days.ago)
+    total_deleted = 0
+
+    stale_contacts.select(:id).in_batches(of: batch_size) do |relation|
+      contact_ids = relation.pluck(:id)
+      next if contact_ids.empty?
+
+      ContactInbox.where(contact_id: contact_ids).delete_all
+      Contact.where(id: contact_ids).delete_all
+
+      total_deleted += contact_ids.size
+      Rails.logger.info "[Internal::RemoveStaleContactsService] Deleted #{contact_ids.size} contacts " \
+                        "(#{total_deleted} total)"
+    end
+
+    Rails.logger.info "[Internal::RemoveStaleContactsService] Completed global removal of #{total_deleted} stale contacts"
+  end
 end