11 form defaults across 6 files used new Date().toISOString().split('T')[0] (the UTC date), which lands on yesterday during the post-midnight Prague window (UTC+1/+2). Added todayLocalStr() (local YYYY-MM-DD) in formatters and replaced them. Future-date expressions (e.g. invoice due_date +14d) left untouched.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>