Two TOC bugs:
1. :NuwikiTOC ignored toc_header / toc_header_level (always "= Contents ="
at level 1). In the single-wiki shorthand the server only carried
file_extension/syntax from the top-level options into the synthesized
wiki; every other per-wiki key (toc_header, toc_header_level,
links_header, html_path, auto_export, …) was dropped. Add
single_wiki_from_value(), which re-parses the top-level object as a full
RawWiki (injecting root from wiki_root), so all per-wiki keys set at the
top level flow through. Wired into from_init_params + apply_change.
2. HTML export put class="toc" on the <hN> element, but upstream vimwiki
(and its stylesheet) wraps the TOC heading in <div class="toc">…</div>.
render_heading now emits the div wrapper, matching upstream so .toc CSS
applies. With (1) fixed, detection also works for a custom toc_header.
Tests: single_wiki_shorthand_honours_top_level_per_wiki_keys (config),
toc_header_heading_wrapped_in_div_toc + non_toc_heading_not_wrapped
(renderer). Full suite 572 passed; clippy clean; config-parity goldens
match.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
gffranco
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