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>

app/controllers/api/v1/accounts/conversations/assignments_controller.rb

@@ -0,0 +1,45 @@
+class Api::V1::Accounts::Conversations::AssignmentsController < Api::V1::Accounts::Conversations::BaseController
+  # assigns agent/team to a conversation
+  def create
+    if params.key?(:assignee_id) || agent_bot_assignment?
+      set_agent
+    elsif params.key?(:team_id)
+      set_team
+    else
+      render json: nil
+    end
+  end
+
+  private
+
+  def set_agent
+    resource = Conversations::AssignmentService.new(
+      conversation: @conversation,
+      assignee_id: params[:assignee_id],
+      assignee_type: params[:assignee_type]
+    ).perform
+
+    render_agent(resource)
+  end
+
+  def render_agent(resource)
+    case resource
+    when User
+      render partial: 'api/v1/models/agent', formats: [:json], locals: { resource: resource }
+    when AgentBot
+      render partial: 'api/v1/models/agent_bot_slim', formats: [:json], locals: { resource: resource }
+    else
+      render json: nil
+    end
+  end
+
+  def set_team
+    @team = Current.account.teams.find_by(id: params[:team_id])
+    @conversation.update!(team: @team)
+    render json: @team
+  end
+
+  def agent_bot_assignment?
+    params[:assignee_type].to_s == 'AgentBot'
+  end
+end