fd05c65018
- Frontend sends user_timezone (IANA, from Intl.DateTimeFormat) with every message POST; threaded through route → generation_task → build_context - System prompt now tells the LLM the user's timezone so it creates events with the correct UTC offset (e.g. 15:00+01:00 not 15:00Z) - Calendar tool guidance updated to require UTC offset in all event datetimes - EventSlideOver: dateFromIso/timeFromIso now use JS Date to convert stored UTC times to local time for display; toIso includes local timezone offset when saving so the correct UTC time is stored Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>