Dry Stems + Separate FX Stem

Description: Allow users to download stems without effects, with reverb, delay, and other processing provided separately in a dedicated FX stem. This would make Stems Studio much more useful for editing and rearranging songs, especially vocals. When users cut or move vocal sections, effects currently attached to the vocal stem can also be cut, creating unnatural transitions and requiring additional work to recreate the effects. A separate FX stem would let users edit the dry vocals and instruments independently while preserving the original effects and allowing them to be applied naturally during the final mix.