Black Basalt Sword

Implement only these approved requirements: - Create a custom sword named Black Basalt Sword, visually a black basalt blade forged from lava itself. - Set durability to 1200, attack damage to 8, and attack speed to -2.4. - Make the sword repairable with a netherite ingot. - Apply omitted tool defaults: mining speed 6, mining level iron, enchantability 14, and use the explicitly requested netherite ingot repair material instead of the default iron repair tag. - Create the black_basalt_sword texture: Inventory item texture for a black basalt sword forged from lava itself: a dark charcoal-black basalt blade with subtle rough volcanic texture, glowing orange-red lava veins along the blade, and a dark reinforced handle; pixel-art style suitable for Minecraft.