Upgrade heatmaps stile Hotjar: movimenti mouse e anteprima pagina live.

Traccia i movimenti aggregati, overlay a gradienti sull’iframe della pagina e toggle click/move in admin.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/models/analytics_event.rb

@@ -3,11 +3,12 @@
 class AnalyticsEvent < ApplicationRecord
   self.table_name = "analytics_events"
 
-  EVENT_TYPES = %w[click scroll pageview].freeze
+  EVENT_TYPES = %w[click scroll pageview move].freeze
   DEVICES = %w[mobile tablet desktop].freeze
 
   validates :page_path, presence: true
   validates :device, inclusion: { in: DEVICES }
   validates :event_type, inclusion: { in: EVENT_TYPES }
   validates :occurred_at, presence: true
+  validates :weight, numericality: { greater_than: 0, less_than_or_equal_to: 500 }
 end

backend/app/models/analytics_page_cell.rb

@@ -9,4 +9,5 @@ class AnalyticsPageCell < ApplicationRecord
   validates :device, inclusion: { in: AnalyticsEvent::DEVICES }
   validates :cell_x, :cell_y, inclusion: { in: 0...(GRID_SIZE) }
   validates :click_count, numericality: { greater_than_or_equal_to: 0 }
+  validates :move_count, numericality: { greater_than_or_equal_to: 0 }
 end