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/slack_uploads_controller.rb

@@ -0,0 +1,32 @@
+class SlackUploadsController < ApplicationController
+  include Rails.application.routes.url_helpers
+  before_action :set_blob, only: [:show]
+
+  def show
+    if @blob
+      redirect_to blob_url
+    else
+      redirect_to avatar_url
+    end
+  end
+
+  private
+
+  def set_blob
+    @blob = ActiveStorage::Blob.find_by(key: params[:blob_key])
+  end
+
+  def blob_url
+    # Only generate representations for images
+    if @blob.content_type.start_with?('image/')
+      url_for(@blob.representation(resize_to_fill: [250, nil]))
+    else
+      url_for(@blob)
+    end
+  end
+
+  def avatar_url
+    base_url = ENV.fetch('FRONTEND_URL', nil)
+    "#{base_url}/integrations/slack/#{params[:sender_type]}.png"
+  end
+end