Altar Smp remake

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• Contagion Signal hitbox fixed — can actually be broken now to stop the ritual
• Contagion Signal: spinning rotation works, correct warped texture, can't be double-placed
• Hammer Throw uses true damage + pulls victim toward you
• Knightfall: chain spam no longer drains all 3 charges in one tick
• Knightfall charge race condition fixed
• Legendary weapons blocked from item frames, crafters, and bundles
• New: /contagionstop to force-stop a stuck ritual
• Memory leak cleanup on Knightfall, Hyperion, Earth Gauntlet, Frost Scythe, Pure Blade, Shadow Blade, Vulcan's Crossbow