Initial commit: Add logistics and order_detail message types

- Add Logistics component with progress tracking
- Add OrderDetail component for order information
- Support data-driven steps and actions
- Add blue color scale to widget SCSS
- Fix node overflow and progress bar rendering issues
- Add English translations for dashboard components

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

spec/enterprise/policies/conversation_policy_spec.rb

@@ -0,0 +1,65 @@
+require 'rails_helper'
+
+RSpec.describe ConversationPolicy, type: :policy do
+  subject { described_class }
+
+  let(:account) { create(:account) }
+  let(:agent) { create(:user, account: account, role: :agent) }
+  let(:inbox) { create(:inbox, account: account) }
+  let(:agent_account_user) { agent.account_users.find_by(account: account) }
+  let(:context) { { user: agent, account: account, account_user: agent_account_user } }
+
+  before do
+    create(:inbox_member, user: agent, inbox: inbox)
+  end
+
+  permissions :show? do
+    context 'when role grants conversation_unassigned_manage' do
+      let(:custom_role) { create(:custom_role, account: account, permissions: ['conversation_unassigned_manage']) }
+
+      before do
+        agent_account_user.update!(role: :agent, custom_role: custom_role)
+      end
+
+      it 'allows access to conversations assigned to the agent' do
+        conversation = create(:conversation, account: account, inbox: inbox, assignee: agent)
+
+        expect(subject).to permit(context, conversation)
+      end
+
+      it 'denies access to conversations assigned to someone else' do
+        other_agent = create(:user, account: account, role: :agent)
+        conversation = create(:conversation, account: account, inbox: inbox, assignee: other_agent)
+
+        expect(subject).not_to permit(context, conversation)
+      end
+    end
+
+    context 'when role grants conversation_participating_manage' do
+      let(:custom_role) { create(:custom_role, account: account, permissions: ['conversation_participating_manage']) }
+
+      before do
+        agent_account_user.update!(role: :agent, custom_role: custom_role)
+      end
+
+      it 'allows access to conversations assigned to the agent' do
+        conversation = create(:conversation, account: account, inbox: inbox, assignee: agent)
+
+        expect(subject).to permit(context, conversation)
+      end
+
+      it 'allows access to conversations where the agent is a participant' do
+        conversation = create(:conversation, account: account, inbox: inbox, assignee: nil)
+        create(:conversation_participant, conversation: conversation, account: account, user: agent)
+
+        expect(subject).to permit(context, conversation)
+      end
+
+      it 'denies access to unrelated conversations' do
+        conversation = create(:conversation, account: account, inbox: inbox, assignee: nil)
+
+        expect(subject).not_to permit(context, conversation)
+      end
+    end
+  end
+end