fix(companies): sync contact company names (#14759)

Fixes company-contact name drift when a company is renamed or deleted.

Closes: N/A

## Why
Contacts keep a denormalized `additional_attributes.company_name` for
display and filtering. Company rename/delete flows could leave that
copied value stale even though the actual `company_id` relationship
changed.

## What changed
- Enqueues an async company contact-name sync job when a company name
changes.
- Moves company deletion into `Companies::DeleteJob`.
- The delete job unlinks linked contacts, clears only the copied
`company_name`, and then deletes the company.
- Uses bulk JSON updates for the cleanup path so contact records are not
saved, which avoids contact update callbacks, webhook dispatch, and
automation side effects.

## How to test
- Link a contact to a company, rename the company, and confirm the
contact company name updates after the job runs.
- Delete a company with linked contacts and confirm the delete job
removes the company, unassigns linked contacts, and preserves other
contact additional attributes.

---------

Co-authored-by: Sony Mathew <sony@chatwoot.com>
Co-authored-by: Sony Mathew <2040199+sony-mathew@users.noreply.github.com>

spec/enterprise/controllers/api/v1/accounts/companies_controller_spec.rb

@@ -385,13 +385,13 @@ RSpec.describe 'Companies API', type: :request do
       let(:admin) { create(:user, account: account, role: :administrator) }
       let(:company) { create(:company, account: account) }
 
-      it 'deletes the company' do
-        company
+      it 'enqueues company deletion' do
         expect do
           delete "/api/v1/accounts/#{account.id}/companies/#{company.id}",
                  headers: admin.create_new_auth_token,
                  as: :json
-        end.to change(Company, :count).by(-1)
+        end.to have_enqueued_job(Companies::DeleteJob).with(company_id: company.id)
+
         expect(response).to have_http_status(:ok)
       end
     end

spec/enterprise/jobs/companies/delete_job_spec.rb

@@ -0,0 +1,19 @@
+require 'rails_helper'
+
+RSpec.describe Companies::DeleteJob, type: :job do
+  describe '#perform' do
+    it 'unlinks contacts, clears company names, and deletes the company' do
+      account = create(:account)
+      company = create(:company, account: account, name: 'Acme')
+      contact = create(:contact, account: account, company: company, additional_attributes: { 'company_name' => 'Acme', 'city' => 'Berlin' })
+      other_contact = create(:contact, account: account, additional_attributes: { 'company_name' => 'Acme' })
+
+      described_class.perform_now(company_id: company.id)
+
+      expect { company.reload }.to raise_error(ActiveRecord::RecordNotFound)
+      expect(contact.reload.company_id).to be_nil
+      expect(contact.additional_attributes).to eq('city' => 'Berlin')
+      expect(other_contact.reload.additional_attributes).to eq('company_name' => 'Acme')
+    end
+  end
+end

spec/enterprise/jobs/companies/sync_contact_names_job_spec.rb

@@ -0,0 +1,38 @@
+require 'rails_helper'
+
+RSpec.describe Companies::SyncContactNamesJob, type: :job do
+  let(:account) { create(:account) }
+  let(:company) { create(:company, account: account, name: 'Acme') }
+
+  describe '#perform' do
+    it 'updates linked contact company names' do
+      contact = create(:contact, account: account, company: company, additional_attributes: { 'company_name' => 'Acme', 'city' => 'Berlin' })
+
+      company.update!(name: 'Acme Labs')
+
+      described_class.perform_now(company_id: company.id)
+
+      expect(contact.reload.additional_attributes).to eq('company_name' => 'Acme Labs', 'city' => 'Berlin')
+    end
+
+    it 'uses the current company name when a stale rename job runs' do
+      contact = create(:contact, account: account, company: company, additional_attributes: { 'company_name' => 'Acme' })
+      company.update!(name: 'Acme Labs')
+
+      described_class.perform_now(company_id: company.id)
+
+      expect(contact.reload.additional_attributes).to eq('company_name' => 'Acme Labs')
+    end
+
+    it 'does not save contacts while syncing the denormalized company name' do
+      contact = create(:contact, account: account, company: company, additional_attributes: { 'company_name' => 'Acme' })
+      original_updated_at = contact.reload.updated_at
+
+      company.update!(name: 'Acme Labs')
+
+      described_class.perform_now(company_id: company.id)
+
+      expect(contact.reload.updated_at).to eq(original_updated_at)
+    end
+  end
+end

spec/enterprise/models/company_spec.rb

@@ -46,4 +46,15 @@ RSpec.describe Company, type: :model do
       expect(company.reload.last_activity_at).to be_within(1.second).of(original_activity_at)
     end
   end
+
+  describe 'contact company name sync' do
+    let(:account) { create(:account) }
+    let(:company) { create(:company, account: account, name: 'Acme') }
+
+    it 'enqueues contact company name sync when the company name changes' do
+      expect do
+        company.update!(name: 'Acme Labs')
+      end.to have_enqueued_job(Companies::SyncContactNamesJob).with(company_id: company.id)
+    end
+  end
 end