Usa screenshot di pagina come sfondo heatmap al posto dell’iframe.

Cattura periodica client-side (con consenso), storage ActiveStorage e overlay allineato all’immagine.

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

backend/db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2026_08_20_210000) do
+ActiveRecord::Schema[7.2].define(version: 2026_08_20_220000) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
@@ -79,6 +79,17 @@ ActiveRecord::Schema[7.2].define(version: 2026_08_20_210000) do
     t.index ["day", "page_path", "device", "cell_x", "cell_y"], name: "index_analytics_page_cells_unique", unique: true
   end
 
+  create_table "analytics_page_snapshots", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.string "page_path", null: false
+    t.string "device", null: false
+    t.integer "width", default: 0, null: false
+    t.integer "height", default: 0, null: false
+    t.datetime "captured_at", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["page_path", "device"], name: "index_analytics_page_snapshots_unique", unique: true
+  end
+
   create_table "analytics_page_stats", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.date "day", null: false
     t.string "page_path", null: false