feat: Add automatic favicon fetching for companies (#13013)

## Summary

This Enterprise-only feature automatically fetches a favicon for
companies created with a domain, and adds a batch task to backfill
missing avatars for existing companies. The flow only targets companies
that do not already have an attached avatar, so existing avatars are
left untouched.


## Demo 



https://github.com/user-attachments/assets/d050334e-769f-4e46-b6e7-f7423727a192



## What changed

- Added `Avatar::AvatarFromFaviconJob` to build a Google favicon URL
from the company domain and fetch it through `Avatar::AvatarFromUrlJob`
- Triggered favicon fetching from `Company` with `after_create_commit`
- Added `Companies::FetchAvatarsJob` to batch existing companies that
are missing avatars
- Added `companies:fetch_missing_avatars` under `enterprise/lib/tasks`
- Kept the company-specific implementation inside the Enterprise
boundary
- Stubbed the new favicon request in unrelated specs that now hit this
callback indirectly
- Updated a couple of CI-sensitive specs that were failing due to
callback side effects / reload-safe exception assertions

## How to verify

1. Create a company in Enterprise with a valid domain and no avatar.
2. Confirm that a favicon-based avatar gets attached shortly after
creation.
3. Create another company with a domain and an avatar already attached.
4. Confirm that the existing avatar is not replaced.
5. Run `companies:fetch_missing_avatars`.
6. Confirm that existing companies without avatars get one, while
companies that already have avatars remain unchanged.

## Notes

- This change does not refresh or overwrite existing company avatars
- Favicon fetching only runs for companies with a present domain
- The branch includes the latest `develop`

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

enterprise/app/models/company.rb

@@ -30,11 +30,13 @@ class Company < ApplicationRecord
 
   belongs_to :account
   has_many :contacts, dependent: :nullify
+  after_create_commit :fetch_favicon, if: -> { domain.present? }
 
   scope :ordered_by_name, -> { order(:name) }
   scope :search_by_name_or_domain, lambda { |query|
     where('name ILIKE :search OR domain ILIKE :search', search: "%#{query.strip}%")
   }
+
   scope :order_on_contacts_count, lambda { |direction|
     order(
       Arel::Nodes::SqlLiteral.new(
@@ -42,4 +44,10 @@ class Company < ApplicationRecord
       )
     )
   }
+
+  private
+
+  def fetch_favicon
+    Avatar::AvatarFromFaviconJob.set(wait: 5.seconds).perform_later(self)
+  end
 end

enterprise/lib/tasks/companies.rake

@@ -0,0 +1,31 @@
+namespace :companies do
+  desc 'Backfill companies from existing contact email domains'
+  task backfill: :environment do
+    puts 'Starting company backfill migration...'
+    puts 'This will process all accounts and create companies from contact email domains.'
+    puts 'The job will run in the background via Sidekiq'
+    puts ''
+    Migration::CompanyBackfillJob.perform_later
+    puts 'Company backfill job has been enqueued.'
+    puts 'Monitor progress in logs or Sidekiq dashboard.'
+  end
+
+  desc 'Fetch favicons for companies without avatars'
+  task fetch_missing_avatars: :environment do
+    account_ids = companies_without_avatars
+
+    account_ids.each do |account_id|
+      Companies::FetchAvatarsJob.perform_later(account_id)
+    end
+
+    puts "Queued #{account_ids.count} accounts for favicon fetch"
+  end
+end
+
+def companies_without_avatars
+  Company.left_joins(:avatar_attachment)
+         .where(active_storage_attachments: { id: nil })
+         .where.not(domain: [nil, ''])
+         .distinct
+         .pluck(:account_id)
+end