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/integrations/slack_controller.rb

@@ -0,0 +1,41 @@
+class Api::V1::Accounts::Integrations::SlackController < Api::V1::Accounts::BaseController
+  before_action :check_admin_authorization?
+  before_action :fetch_hook, only: [:update, :destroy, :list_all_channels]
+
+  def list_all_channels
+    @channels = channel_builder.fetch_channels
+  end
+
+  def create
+    hook_builder = Integrations::Slack::HookBuilder.new(
+      account: Current.account,
+      code: params[:code],
+      inbox_id: params[:inbox_id]
+    )
+    @hook = hook_builder.perform
+  end
+
+  def update
+    @hook = channel_builder.update(permitted_params[:reference_id])
+    render json: { error: I18n.t('errors.slack.invalid_channel_id') }, status: :unprocessable_entity if @hook.blank?
+  end
+
+  def destroy
+    @hook.destroy!
+    head :ok
+  end
+
+  private
+
+  def fetch_hook
+    @hook = Integrations::Hook.where(account: Current.account).find_by(app_id: 'slack')
+  end
+
+  def channel_builder
+    Integrations::Slack::ChannelBuilder.new(hook: @hook)
+  end
+
+  def permitted_params
+    params.permit(:reference_id)
+  end
+end