Both are pure leaves (no bin-module refs, no Slint coupling). Moved verbatim
into qbz-text-utils. Caught by adversarial review: dates.rs needs chrono's
`unstable-locales` feature (Locale + format_localized) and an inline
`qbz_i18n::current_language()` ref (no `use` line — the qbz_models::Track
trap). Bin re-exports via `pub use qbz_text_utils::{dates, strip_html};` so the
14 call sites are unchanged. `cargo check -p qbz` green.
cc
