Graham McIntire 872bef3512 feat: add 12/24-hour time format setting with consistent timezone display ... wire time_format into scope, add settings UI selector, change defaults to 24h, and replace all user-facing Calendar.strftime calls with centralized TimeHelpers using the user's timezone and time format.		2026-02-13 15:16:29 -06:00
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helpers_test.exs	feat: add 12/24-hour time format setting with consistent timezone display	2026-02-13 15:16:29 -06:00