Snakes and savana improvements

I think the Savanna biome deserves more wildlife, vegetation and unique interactions to make it feel more alive.

Snakes

Add neutral snakes to Deserts, Badlands and Jungles, with rare spawns in Mangrove Swamps. They generally avoid players but defend themselves if attacked or stepped on, briefly inflicting Poison I for 3 seconds.

Players can collect snakes using an empty Decorated Pot. When placed, a pot containing a snake can act as an optional proximity alarm. If a hostile mob approaches within 8 blocks, the snake rises out and makes a distinctive hissing sound before returning to its pot when the danger passes.

Bamboo Flute
Introduce a new instrument crafted using 2 Bamboo and 1 Copper Nugget arranged vertically. Playing it near a potted snake makes the snake rise out and sway to the music, similar to dancing parrots.

Baobab Trees and Fruit
Introduce large baobab trees with thick trunks, wide canopies and a unique reddish-brown wood set. Their leaves can occasionally produce baobab fruit, restoring 4 hunger points with good saturation.