Lots of updates

app/models/setting.rb

@@ -0,0 +1,18 @@
+class Setting < ApplicationRecord
+  validates :key, presence: true, uniqueness: true
+
+  # Get a setting value by key, with optional fallback
+  def self.get(key, default = nil)
+    find_by(key: key)&.value || default
+  end
+
+  # Set a setting value by key
+  def self.set(key, value)
+    find_or_initialize_by(key: key).update(value: value)
+  end
+
+  # Convenience method for ipapi.is API key
+  def self.ipapi_key
+    get('ipapi_key', ENV['IPAPI_KEY'])
+  end
+end