1.0.0

• Initial release.
• Extends core/code with Prism.js syntax highlighting — no block replacement, no block validation errors.
• 40 supported languages with per-block language selection.
• 21 built-in Prism themes selectable from the settings page.
• Per-block controls: language, line numbers, start line, word wrap, title, highlight lines, and max height.
• Expand/collapse toolbar button for blocks with a max-height set.
• Smart asset loading — Prism CSS and JS only enqueued on pages containing code blocks.
• Copy-to-clipboard and show-language toolbar buttons (configurable globally).
• Global settings page for colour scheme, default language, and more.
• Developer filters: wzcbh_languages, wzcbh_color_scheme_css_url, wzcbh_force_load_assets.
• GDPR-friendly: no data collection, no external requests.