fix: update URL slugs for cities and weather arts

- Changed URLs to use city slugs instead of IDs
- Updated corresponding URLs for weather arts to use slugs

This change ensures that the URLs are more readable and maintainable
by using slugs rather than numerical IDs. It improves SEO and
user experience when accessing city and weather art pages.

app/workers/submit_to_indexnow_worker.rb

@@ -76,9 +76,9 @@ class SubmitToIndexnowWorker
     # 城市详情页
     City.where("updated_at > ?", recently_updated).find_each do |city|
       # City.find_each do |city|
-      urls << "#{@host}/cities/#{city.id}"
+      urls << "#{@host}/cities/#{city.slug}"
       available_locales.each do |locale|
-        urls << "#{@host}/#{locale}/cities/#{city.id}"
+        urls << "#{@host}/#{locale}/cities/#{city.slug}"
       end
     end
 
@@ -86,9 +86,9 @@ class SubmitToIndexnowWorker
     WeatherArt.includes(:city).where("updated_at > ?", recently_updated).find_each do |art|
       # WeatherArt.includes(:city).find_each do |art|
       if art.image.attached?
-        urls << "#{@host}/cities/#{art.city.id}/weather_arts/#{art.id}"
+        urls << "#{@host}/cities/#{art.city.slug}/weather_arts/#{art.slug}"
         available_locales.each do |locale|
-          urls << "#{@host}/#{locale}/cities/#{art.city.id}/weather_arts/#{art.id}"
+          urls << "#{@host}/#{locale}/cities/#{art.city.slug}/weather_arts/#{art.slug}"
         end
       end
     end