Crafting and Layering Chainmail Armor

I suggest adding a way to craft chainmail armor from iron scraps or a small number of iron ingots.
Additionally, a new mechanic could allow players to wear metal armor on top of chainmail.

For example, wearing iron or copper armor over chainmail could provide protection close to diamond armor, but with a drawback — slower movement.
This mechanic would apply only to metal armors (iron, copper, gold), but not to diamond or netherite, since they are not metallic.

This feature would add realism and more strategic depth to how players choose their armor combinations.