fix(admin): clear posts cache after save/delete

lib/volumen/admin_routes.rb

@@ -71,6 +71,7 @@ module Volumen
         require_login!
         check_csrf!
         store.delete(params["slug"])
+        clear_posts_cache!
         redirect to("/admin/")
       end
 

lib/volumen/server.rb

@@ -103,6 +103,10 @@ module Volumen
                                 .sort_by { |post| post.date_string || "" }.reverse
     end
 
+    def clear_posts_cache!
+      @published_posts = nil
+    end
+
     def site_payload
       config.site.slice("title", "description", "base_url", "language", "author",
                         "fediverse_creator")
@@ -342,6 +346,7 @@ module Volumen
         return erb(:form)
       end
       store.save(post)
+      clear_posts_cache!
       redirect to("/admin/")
     end
 
@@ -358,6 +363,7 @@ module Volumen
         return erb(:form)
       end
       store.save(post)
+      clear_posts_cache!
       redirect to("/admin/")
     end