Checkpoint: One List, Many Views

The task

Implement op_apply and op_from_name (see the challenge) over the provided OPS list — every view generated from it, none hand-copied. The overflow rule makes op_apply a real API: compute wide, reject what does not fit, document nothing twice.

Passing this proves the preprocessor's superpower: parallel structures that cannot drift, because there is only one list.

Next module: trees and heaps — the hierarchy beyond lists.