Function apply_payment_lifecycle_delta 

pub fn apply_payment_lifecycle_delta(
    adapter: &dyn DatabaseOperations,
    config: &DbBackendConfig,
    schema: &AppSchema,
    declaration: &Value,
    actor_id: i64,
    before: &Value,
    after: &Value,
) -> Result<Value, DatabaseError>

Commits changed payment rows atomically, with compare-and-write guards and transaction-local references for identities generated by any backend.