djust 0.5.0rc2 Release Notes

Bootstrap 4 CSS framework adapter — New Bootstrap4Adapter for projects using Bootstrap 4 (NYC Core Framework, government sites, legacy projects). Set DJUST_CONFIG = {"css_framework": "bootstrap4"}. Includes proper custom-select, custom-control-* classes for checkboxes/radios, and form-group wrappers. See docs/website/guides/css-frameworks.md.
Dedicated radio button classes — Radio buttons now use radio_class, radio_label_class, and radio_wrapper_class config keys (with fallback to checkbox classes). Both Bootstrap 4 and 5 configs define radio-specific classes.
Select widget class support — ChoiceField with Select widget uses select_class config key (e.g., custom-select for BS4, form-select for BS5) instead of the generic field_class.
Theme-to-framework CSS bridge — New {% theme_framework_overrides %} template tag generates <style> overrides that map djust theme variables (--primary, --border, etc.) onto the active CSS framework's selectors (.btn-primary, .form-control, .alert-*, etc.). Switching themes now automatically re-styles Bootstrap 4/5 components.
See docs/website/guides/css-frameworks.md.

Derived container context values now tracked by value equality (#774) — The Rust state sync used id() comparison for all non-immutable context values, which is unreliable for containers (dict, list, tuple) due to CPython address reuse after GC. Derived values like current_step = wizard_steps[step_index] could be missed when the handler only changed step_index, causing Rust to render stale HTML. Fix: containers are now compared by value equality (like immutables already were), with previous values cached in _prev_context_containers. The optimization is preserved — unchanged containers are still skipped.