Introduces @trails-cool/sentry-config with three helpers that encode
the common Sentry.init options:
- nodeSentryConfig(appContext) for the two HTTP servers
- browserSentryConfig(appContext, env) for the Journal client
- mobileSentryConfig(__DEV__) for the React Native app
- drop404s beforeSend for servers
Also fixes three inconsistencies found in the audit:
- Planner server was missing sendDefaultPii: false (IPs could leak)
- Planner entry.server.tsx didn't call Sentry.captureException on SSR
render errors; Journal's SSR did
- Sentry.init location now matches across apps (both in server.ts;
Journal previously had it in app/entry.server.tsx, which meant init
ran lazily on first request rather than at server startup)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Split initI18n() into separate server/client initialization paths
inspired by remix-i18next's architecture:
- initI18nServer(lng): no LanguageDetector, per-request language from
Accept-Language header
- initI18nClient(): LanguageDetector reads <html lang> first to match
server, then localStorage and navigator
- detectLanguage(request): parses Accept-Language for best match
Fixes rehydration errors caused by v26 removing initImmediate option
(replaced with initAsync) and LanguageDetector running on the server
where browser APIs don't exist.
Also makes <html lang> dynamic instead of hardcoded "en".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
