iamtoruk 68c6f2c710 Fix timezone handling: menubar UTC bugs, --timezone flag, DST-safe dates ... Three fixes for issue #184: 1. Menubar Swift code used UTC instead of local timezone in two places: computeHistoryStats hardcoded TimeZone("UTC") and effectiveTokensInLast7Days used ISO8601DateFormatter (UTC default). Both now use .current to match CLI-produced local date keys. 2. Add --timezone flag and CODEBURN_TZ env var to override the system timezone for all date grouping. Sets process.env.TZ before any Date operations so all existing local-timezone code works unchanged. 3. Replace MS_PER_DAY arithmetic with Date constructor day-of-month math for yesterday/backfill computations. Subtracting 86400000ms from midnight skips a day on DST spring-forward (23-hour day). Fixes #184		2026-04-30 17:33:02 -07:00
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CodeBurnMenubar	Fix timezone handling: menubar UTC bugs, --timezone flag, DST-safe dates	2026-04-30 17:33:02 -07:00