Migrate to propshaft from sprockets

Gemfile

@@ -1,9 +1,8 @@
 source "https://rubygems.org"
 
 gem "rails", github: "rails/rails", branch: "main"
-gem "sprockets-rails"
 # The modern asset pipeline for Rails [https://github.com/rails/propshaft]
-# gem "propshaft"
+gem "propshaft"
 # Use sqlite3 as the database for Active Record
 gem "sqlite3", ">= 1.4"
 # Use the Puma web server [https://github.com/puma/puma]

Gemfile.lock

@@ -178,6 +178,11 @@ GEM
     parser (3.3.3.0)
       ast (~> 2.4.1)
       racc
+    propshaft (0.9.0)
+      actionpack (>= 7.0.0)
+      activesupport (>= 7.0.0)
+      rack
+      railties (>= 7.0.0)
     psych (5.1.2)
       stringio
     public_suffix (6.0.0)
@@ -245,13 +250,6 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
-    sprockets (4.2.1)
-      concurrent-ruby (~> 1.0)
-      rack (>= 2.2.4, < 4)
-    sprockets-rails (3.5.1)
-      actionpack (>= 6.1)
-      activesupport (>= 6.1)
-      sprockets (>= 3.0.0)
     sqlite3 (2.0.2-aarch64-linux-gnu)
     sqlite3 (2.0.2-arm64-darwin)
     sqlite3 (2.0.2-x86_64-linux-gnu)
@@ -301,11 +299,11 @@ DEPENDENCIES
   debug
   importmap-rails
   jbuilder
+  propshaft
   puma (>= 5.0)
   rails!
   rubocop-rails-omakase
   selenium-webdriver
-  sprockets-rails
   sqlite3 (>= 1.4)
   stimulus-rails
   tailwindcss-rails (~> 2.0)

app/assets/config/manifest.js

@@ -1,5 +0,0 @@
-//= link_tree ../images
-//= link_directory ../stylesheets .css
-//= link_tree ../../javascript .js
-//= link_tree ../../../vendor/javascript .js
-//= link_tree ../builds