Summary

• add a persisted Codebridge editor setting for Code suggestions, defaulting to On
• add the setting to the Codebridge settings menu as On/Off
• skip CodeMirror's autocompletion extension when the setting is Off

Testing

• PASS: ./tools/hooks/pre-commit
• PASS: PATH=/Users/ebeastlake/.rbenv/shims:$PATH git commit ... commit hooks
• PASS: /Users/ebeastlake/.rbenv/shims/bundle exec ruby -Itest ./test/controllers/user_preferences_controller_test.rb
• FAIL, unrelated local generated typing issue: yarn test:unit test/unit/codebridge/Editor/EditorTest.tsx fails before loading the test on src/util/globalEdition.ts (Regions[GlobalEditionDefaultRegion], missing us key)
• FAIL, unrelated existing/local generated typing issues: yarn run typecheck fails in generated/shared constants, Blockly, Dance AI, and global edition files outside this change

Notes

• This adds user_preferences.editor_settings. The commit hook printed the standard migration warning for adding a column; please sanity-check whether this needs infra review for production DDL.