refactor: clean up ai_service code formatting

- Adjust formatting for message parameters in the chat call
- Eliminate unnecessary blank lines in generate_prompt_request method
- Ensure consistent styles for arrays and block indentation

These changes improve code readability and maintain consistency in
formatting for better maintainability without altering functionality.

app/jobs/batch_generate_weather_arts_job.rb

@@ -30,5 +30,4 @@ class BatchGenerateWeatherArtsJob < ApplicationJob
   #   time = Time.current.in_time_zone(timezone)
   #   time.hour == 2
   # end
-
 end

config/routes.rb

@@ -2,7 +2,7 @@ Rails.application.routes.draw do
   root "home#index"
 
   resources :cities, only: [ :index, :show ] do
-    resources :weather_arts, path: 'weather', only: [:show], param: :slug
+    resources :weather_arts, path: "weather", only: [ :show ], param: :slug
   end
 
   # namespace :admin do