You are reviewing small utility functions for Lumen Dispatch, a fictional delivery planner. The team receives typed configuration values alongside form text, so identical-looking values can have different meanings. Use the requested contract to decide which values to keep, convert, or replace. The exercises revisit strict equality, numeric conversion, control flow, and block scope on new inputs. Some rows contain zero, empty text, or a boundary value on purpose. Those are ordinary inputs that the utilities must handle. Work from the visible example, then check whether your rule also explains the hidden edge cases without hardcoding a particular batch.