Module coercion 

Functions

sanitize_numeric

Numeric sanitization: NaN/Inf → #NUM!

to_datetime_serial

Coerce to Excel serial (date/time/duration) or error.

to_logical

Logical coercion.

to_number_lenient

Lenient numeric coercion.

to_number_lenient_with_locale

Context-aware lenient numeric coercion using locale.

to_number_strict

Centralized coercion and error policy utilities (Milestone 7). These functions implement invariant, Excel-compatible coercions and numeric sanitization. They should be used by the interpreter, builtins, and evaluation pipelines (map/fold/window) instead of ad-hoc parsing. Strict numeric coercion.

to_text_invariant

Invariant textification for comparisons/concatenation.