Move extension configuration to config file

Kudos to Mike for the tip

config/application.rb

@@ -1,6 +1,7 @@
 require_relative "boot"
 
 require "rails/all"
+require "sqlite_vec" # Referenced in database.yml
 
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.

config/database.yml

@@ -8,6 +8,8 @@ default: &default
   adapter: sqlite3
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   timeout: 5000
+  extensions:
+    - <%= SqliteVec.loadable_path %>
 
 development:
   primary:
@@ -42,6 +44,7 @@ production:
     tenanted: true
     extensions:
       - ./bin/lib/beamer.so
+      - <%= SqliteVec.loadable_path %>
   primary_original:
     <<: *default
     database: storage/production.sqlite3

lib/rails_ext/sqlite_vec.rb

@@ -1,14 +0,0 @@
-require "sqlite_vec"
-require "active_record/connection_adapters/sqlite3_adapter"
-
-module SqliteVecExtension
-  def configure_connection
-    super
-    db = @raw_connection
-    db.enable_load_extension(true)
-    SqliteVec.load(db)
-    db.enable_load_extension(false)
-  end
-end
-
-ActiveRecord::ConnectionAdapters::SQLite3Adapter.prepend(SqliteVecExtension)