Bill Moon portal item and misc fixes — Texplore Steam update #152950

New: Dimensional Portal in Bill's Moon Shop Bill now sells the Dimensional Portal as a moon-exclusive shop item for 1,000,000 coins This powerful item lets you place a portal to travel between Earth and Moon The portal is not affected by skill tree discounts — noted on the shop card Auto-equips to your hotbar on purchase Balance: Fora's Portal Price Increase Dimensional Portal price in Fora's shop increased from 300,000 → 699,999 coins New: Moon-Specific Bill Dialogue Bill now has a unique first-visit conversation on the Moon — he'll thank you for getting him off Earth, introduce his new lunar inventory, and tease the fresh quests ahead All subsequent Moon visits feature 8 new moon-themed dialogue lines referencing low gravity, lunar dust, and life beyond Earth Moon quest dialogue is now distinct: unique lines for turn-ins, progress checks, and quest completion Bill's Earth dialogue audi...