Normalized Volt test runner configuration.
Configuration follows Volt's existing flat/profile style:
config :volt, :test,
root: "assets",
include: ["**/*.{test,spec}.{js,ts,jsx,tsx}"],
exclude: ["vendor/**", "node_modules/**"]
config :volt, :my_app_web,
test: [root: "apps/my_app_web/assets"]Profile-specific test options override global config :volt, :test values.
Explicit overrides win over both.