Aggiunge heatmaps first-party (click/scroll) con pagina admin Analytics.

Raccoglie eventi aggregati dietro consenso cookie, senza PII né tracking su admin/regia/live/replay; GA4 resta invariato.

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

backend/app/controllers/analytics/events_controller.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module Analytics
+  class EventsController < ActionController::API
+    def create
+      payload = parse_payload
+      result = Analytics::Ingest.new(events: payload, remote_ip: request.remote_ip).call
+
+      if result.rate_limited
+        return head :too_many_requests
+      end
+
+      render json: { accepted: result.accepted, rejected: result.rejected }, status: :accepted
+    end
+
+    private
+
+    def parse_payload
+      body = request.request_parameters
+      return body["events"] if body.is_a?(Hash) && body["events"].is_a?(Array)
+      return body if body.is_a?(Array)
+
+      raw = request.raw_post
+      return [] if raw.blank?
+
+      parsed = JSON.parse(raw)
+      return parsed["events"] if parsed.is_a?(Hash) && parsed["events"].is_a?(Array)
+      return parsed if parsed.is_a?(Array)
+
+      []
+    rescue JSON::ParserError
+      []
+    end
+  end
+end