v0.8.0b4

[0.8.0b4]

Added

• Auto-create a "buy" task when a spare part runs low. A replaceable part that
  tracks stock with a reorder threshold can now opt into an automatic shopping
  reminder: enable Auto-create buy task on the part, and whenever its stock drops
  to (or below) the reorder point Home Keeper adds a one-off "Buy {part}" task —
  on the appliance's device page, the to-do list, and the panel. The reminder clears
  itself once the part is restocked above the threshold (or you turn the option off).
  Completing the reminder restocks the part by a configurable Restock quantity
  (default 1), closing the low → buy → restocked loop with no automation to write.