Added
Active skill shortcut bar on the right edge of the left panel (Cloud Ladder / Formation Break / Golden Bell / Spring Return · 4 fixed slots)
Icons appear when unlocked; tap to cast when ready; radial cooldown overlay while active or on cooldown
Improved
Batch upgrade cap is now ×100 max (removed ×1000 to reduce lag at high levels; saves with ×1000 downgrade to ×100 on load)
Rebirth / load / world switch no longer reset rain overlay, animated sky, and other graphics toggles
Rebirth skill is always shown in the skill list (requirements unchanged: Lv.500 + 10T gold)
Inventory detail no longer shows the Rules button at the bottom (Rules stays on the main inventory list only)