add authors to post save

app/models/communication/website/post.rb

@@ -73,7 +73,7 @@ class Communication::Website::Post < ApplicationRecord
   end
 
   def git_dependencies(website)
-    [self] + [author] + categories + active_storage_blobs
+    [self] + [author, author&.author] + categories + active_storage_blobs
   end
 
   def git_destroy_dependencies(website)

app/models/communication/website/with_abouts.rb

@@ -42,7 +42,9 @@ module Communication::Website::WithAbouts
   def people
     @people ||= (
       posts.collect(&:author) +
-      programs.collect(&:university_people_through_teachers).flatten
+      posts.collect(&:author).map(&:author) +
+      programs.collect(&:university_people_through_teachers).flatten +
+      programs.collect(&:university_people_through_teachers).flatten.map(&:teacher)
       # TODO researchers via articles
     ).uniq.compact
   end