Translate the setup flow into the other six locales

Every key the flow, the checklist rows, the Settings card and the
module-off action added to the English bundle now exists in German,
Spanish, French, Italian, Polish and Korean, with the same placeholders.
The forty-seven keys the five-step wizard left behind — its carousel,
goal picker, source grid and step counter — leave all seven bundles,
and the English-leak guard drops the one entry that named them.

src/__tests__/i18n-english-leak-guard.test.ts

@@ -112,7 +112,6 @@ const LEGIT_IDENTICAL = new Set<string>([
   "measurements.sourceAppleHealth",
   "measurements.sourceGoogleHealth",
   "medications.sourceAppleHealth",
-  "onboarding.source.more.appleHealth",
   "settings.ai.providerChain.types.anthropic",
   "settings.ai.providerChain.types.codex",
   "settings.ai.providerSelect.anthropic",