Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/services/internal/accounts/internal_attributes_service.rb

@@ -0,0 +1,68 @@
+class Internal::Accounts::InternalAttributesService
+  attr_reader :account
+
+  # List of keys that can be managed through this service
+  # TODO: Add account_notes field in future
+  # This field can be used to store notes about account on Chatwoot cloud
+  VALID_KEYS = %w[manually_managed_features].freeze
+
+  def initialize(account)
+    @account = account
+  end
+
+  # Get a value from internal_attributes
+  def get(key)
+    validate_key!(key)
+    account.internal_attributes[key]
+  end
+
+  # Set a value in internal_attributes
+  def set(key, value)
+    validate_key!(key)
+
+    # Create a new hash to avoid modifying the original
+    new_attrs = account.internal_attributes.dup || {}
+    new_attrs[key] = value
+
+    # Update the account
+    account.internal_attributes = new_attrs
+    account.save
+  end
+
+  # Get manually managed features
+  def manually_managed_features
+    get('manually_managed_features') || []
+  end
+
+  # Set manually managed features
+  def manually_managed_features=(features)
+    features = [] if features.nil?
+    features = [features] unless features.is_a?(Array)
+
+    # Clean up the array: remove empty strings, whitespace, and validate against valid features
+    valid_features = valid_feature_list
+    features = features.compact
+                       .map(&:strip)
+                       .reject(&:empty?)
+                       .select { |f| valid_features.include?(f) }
+                       .uniq
+
+    set('manually_managed_features', features)
+  end
+
+  # Get list of valid features that can be manually managed
+  def valid_feature_list
+    # Business and Enterprise plan features only
+    Enterprise::Billing::HandleStripeEventService::BUSINESS_PLAN_FEATURES +
+      Enterprise::Billing::HandleStripeEventService::ENTERPRISE_PLAN_FEATURES
+  end
+
+  # Account notes functionality removed for now
+  # Will be re-implemented when UI is ready
+
+  private
+
+  def validate_key!(key)
+    raise ArgumentError, "Invalid internal attribute key: #{key}" unless VALID_KEYS.include?(key)
+  end
+end