v0.5.1

Fixed

• Weekly "HOT pace" no longer false-fires right after the reset. enrichWeekly
  flagged hot whenever the extrapolated pace exceeded 1.15× sustainable, even when only
  a sliver of the week had elapsed — so a short burst in the first hours (e.g. 4% used in
  ~4h) projected "you'll exhaust the week" with 96% left, which isn't actionable. HOT now
  additionally requires that a material share of the weekly budget is actually used
  (seven_day.used_pct >= 15, ≈ one day's sustainable allowance); below that the stamp
  shows the calm "cruising" form. Deliberately a usage floor (not an elapsed-time floor),
  so a genuine heavy early burn still surfaces.