[Oasis] Hyper-Drive Tycoon

Claim → build → upgrade → collect → rebirth loop Droppers, upgraders (including 2x with safe once-per-drop logic) Collectors + auto-collect paths Owner-only doors, hat/gear paths, trail givers Infinity cash pad (owner-locked) World hub boxes, richest display, tip signs Group join reward hook Spawning, ban handler, system messaging