Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/services/whatsapp/reauthorization_service.rb

@@ -0,0 +1,42 @@
+class Whatsapp::ReauthorizationService
+  def initialize(account:, inbox_id:, phone_number_id:, business_id:)
+    @account = account
+    @inbox_id = inbox_id
+    @phone_number_id = phone_number_id
+    @business_id = business_id
+  end
+
+  def perform(access_token, phone_info)
+    inbox = @account.inboxes.find(@inbox_id)
+    channel = inbox.channel
+
+    # Validate phone number matches for reauthorization
+    if phone_info[:phone_number] != channel.phone_number
+      raise StandardError, "Phone number mismatch. Expected #{channel.phone_number}, got #{phone_info[:phone_number]}"
+    end
+
+    # Update channel configuration
+    update_channel_config(channel, access_token, phone_info)
+    # Mark as reauthorized
+    channel.reauthorized! if channel.respond_to?(:reauthorized!)
+
+    channel
+  end
+
+  private
+
+  def update_channel_config(channel, access_token, phone_info)
+    current_config = channel.provider_config || {}
+    channel.provider_config = current_config.merge(
+      'api_key' => access_token,
+      'phone_number_id' => @phone_number_id,
+      'business_account_id' => @business_id,
+      'source' => 'embedded_signup'
+    )
+    channel.save!
+
+    # Update inbox name if business name changed
+    business_name = phone_info[:business_name] || phone_info[:verified_name]
+    channel.inbox.update!(name: business_name) if business_name.present?
+  end
+end