Module extraction_helpers 

Extraction helpers for method handlers.

Wave-β R-misc migration (per ADR-006 §2.7 + playbook §10 D-array-detect / D-v2-array-detect template): the legacy v1 ValueWord-shaped helpers (require_any_array_arg, nb_to_string_coerce, check_arg_count) depended on a stack of deleted carriers — shape_value::ValueWord / ValueWordExt (the v1 dynamic-tag word, deleted), shape_value::ArrayView (the v1 polymorphic array view, deleted alongside as_any_array), and the as_str / as_f64 / as_i64 / as_bool / is_none accessors on &ValueWord (all deleted by §2.7.6 — heap dispatch goes through KindedSlot::slot.as_heap_value() + HeapValue match per Q8).

• require_any_array_arg(&[ValueWord]) -> Result<ArrayView, _> — deleted (no caller is reachable until D-array-detect / D-v2-array-detect rebuild lands the kinded array dispatch surface). Callers in array_sort.rs / array_transform.rs are pre-existing Wave-α-broken on nb_to_string_coerce; the array-view accessor itself has zero live callers.
• nb_to_string_coerce(&ValueWord) -> String — deleted. Callers in array_sort.rs / array_transform.rs reach this via array.iter() on the deleted v1 array view; both consumer files are pre-existing Wave-α-broken and migrate together with the kinded array surface.
• check_arg_count(&[ValueWord], usize, &str, &str) -> Result<(), _> — deleted. Zero live callers (verified via grep across crates/).

type_mismatch_error(method_name: &str, expected_type: &str) -> VMError is preserved verbatim — its signature carries no ValueWord dependency and it is the only helper in this module with live callers (~80 sites across priority_queue_methods.rs, deque_methods.rs, and other objects/*_methods.rs files).