`node:` protocol is available as of Node.js 14.18.0 LTS. Since we are
dropping support for all Node.js versions below that, we can take
advantage of this prefix to help differentiate built-in modules from npm
modules.
* enforce some eslint rules
* enforce accessibility linter rules
* harden lint rules with only 1 or 2 warnings
* fix remaining rules with less than 3 warnings
* fix e2e tests
* fix remaining rules with less than 4 warnings
* fix remaining rules with less than 6 warnings
* fix `shuffleTaglines`
* fix companion build