Many updates

app/helpers/application_helper.rb

@@ -139,4 +139,15 @@ module ApplicationHelper
       raw: user_agent
     }
   end
+
+  # Convert country code to flag emoji
+  def country_flag(country_code)
+    return "" if country_code.blank?
+
+    # Convert ISO 3166-1 alpha-2 country code to flag emoji
+    # Each letter is converted to its regional indicator symbol
+    country_code.upcase.chars.map { |c| (c.ord + 127397).chr(Encoding::UTF_8) }.join
+  rescue
+    ""
+  end
 end