Sunken Treasures — Underwater Shipwrecks, Ruins & Pirate Ships

Added • Per-world raid leaderboard for players and ghost rivals (Captain Blackfin, Dame Coral, Old Salt Mara) • Raid points from discovering a filled treasure chest (first find only) • Map cache: 40 • Pirate wreck: 30 • Shipwreck: 25 • Ruin: 20 • Rank upgrades the next chest fill: 1st = 2 extra rolls, 2nd = 1 extra roll • Raid Ledger item (given on join) — open inventory and use it to open the board • Rank HUD strip (rank + points) • /raidboard still opens the board • Ghosts periodically find the same treasure types and score the same points (they do not take player chests) • Ledger shows the latest ghost find

Changed • Treasure chests only place in real open water (no inland / dry-land chests)

Notes • Restart the world after installing so the ledger and board load • Scores persist per world in raid_leaderboard.json