Function transform_spell 

pub fn transform_spell(
    dbc: &DbcData,
    spell_id: i32,
    context: Option<&SpellKnowledgeContext>,
) -> Result<SpellDataFlat, TransformError>

Build a fully-resolved SpellDataFlat for spell_id by joining 20+ DBC tables and applying optional class/spec context.

Errors

Returns TransformError when spell_id is absent from the DBC data.