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allToHtml now prunes orphan HTML files (no corresponding wiki source) under html_path — export_ops::prune_orphan_html walks the output tree, maps each <rel>.html back to <root>/<rel>.<ext>, and deletes those with no source, skipping the CSS file and any basename in user_htmls. Gated on !html_filename_parameterization (slugified names can't be reverse-mapped), mirroring upstream; the pruned paths are reported in the command result. hl_headers / hl_cb_checked are NOT implemented as toggles: nuwiki already highlights headers per-level (@vimwikiHeading.level1..6) and checkboxes always-on via LSP semantic tokens, which supersedes the upstream opt-in toggles (default off) — same class as the maxhi divergence. Documented in the gap doc rather than degrading the existing highlighting. Test: prune_orphan_html_deletes_sourceless_keeps_protected. Full rust suite + clippy clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>