Empty Hand Keybind - Hold Onto THIS

Added

• Shift + the toggle key locks the currently empty hotbar slot, keeping it empty even when you pick items up off the ground. Only one slot can be locked at a time; locking a new slot auto-unlocks the old one, and manually placing an item into the locked slot breaks the lock. The locked slot is tinted red and an action-bar message confirms locking/unlocking.

Changed

• The toggle now fires on key release instead of key press, and a hold longer than 350ms is treated as a deliberate hold (e.g. for FTB Ultimine) rather than a toggle press, so it no longer fires the toggle by mistake when the key is shared with another hold-to-use bind.